CRAN Package Check Results for Maintainer ‘Lorenz A. Kapsner <lorenz.kapsner at gmail.com>’

Last updated on 2020-08-07 01:50:25 CEST.

Package rBiasCorrection

Current CRAN status: ERROR: 1, OK: 11

Additional issues

noLD

Version: 0.2.1
Check: tests
Result: ERROR
     Running ‘testthat.R’ [696s/235s]
    Running the tests in ‘tests/testthat.R’ failed.
    Complete output:
     > library(testthat)
     > library(rBiasCorrection)
     >
     > test_check("rBiasCorrection")
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     ── 1. Failure: test normal function of file import of type 1 (@test-clean_dt.R#1
     Value hashes to a97f4cf13a, not ab5287b084
    
     ── 2. Failure: test normal function of file import of type 1 (@test-clean_dt.R#2
     Value hashes to a97f4cf13a, not ab5287b084
    
     ── 3. Failure: test normal function of file import of type 1 (@test-clean_dt.R#2
     Value hashes to eccd89265e, not 1fb62d8498
    
     ── 4. Failure: test normal function of file import of type 2 (@test-clean_dt.R#3
     Value hashes to a0ee41e7db, not f8d57b6e9c
    
     ── 5. Failure: test normal function of file import of type 2 (@test-clean_dt.R#4
     Value hashes to a0ee41e7db, not f8d57b6e9c
    
     ── 6. Failure: test normal function of file import of type 2 (@test-clean_dt.R#4
     Value hashes to 875c4d0842, not 516b7aee57
    
     ── 7. Failure: test normal function of file import of type 2 (@test-clean_dt.R#5
     Value hashes to f66b7686fd, not d32a53505b
    
     ── 8. Failure: test functioning of aggregated function (@test-create_aggregated.
     Value hashes to 4a4ed97b38, not 5a885b7e0a
    
     ── 9. Failure: test functioning of aggregated function (@test-create_aggregated.
     Value hashes to 46d527e146, not d042a19f13
    
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     number of iterations exceeded maximum of 50
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     step factor 0.000488281 reduced below 'minFactor' of 0.000976562
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     Error in (function (formula, data = parent.frame(), start, control = nls.control(), :
     singular gradient
     ══ testthat results ═══════════════════════════════════════════════════════════
     [ OK: 181 | SKIPPED: 2 | WARNINGS: 12 | FAILED: 9 ]
     1. Failure: test normal function of file import of type 1 (@test-clean_dt.R#17)
     2. Failure: test normal function of file import of type 1 (@test-clean_dt.R#21)
     3. Failure: test normal function of file import of type 1 (@test-clean_dt.R#25)
     4. Failure: test normal function of file import of type 2 (@test-clean_dt.R#39)
     5. Failure: test normal function of file import of type 2 (@test-clean_dt.R#43)
     6. Failure: test normal function of file import of type 2 (@test-clean_dt.R#47)
     7. Failure: test normal function of file import of type 2 (@test-clean_dt.R#52)
     8. Failure: test functioning of aggregated function (@test-create_aggregated.R#25)
     9. Failure: test functioning of aggregated function (@test-create_aggregated.R#30)
    
     Error: testthat unit tests failed
     Execution halted
Flavor: r-patched-solaris-x86