splines2 0.3.1

Minor changes

• Modified testing examples for CRAN tests on r-patched-solaris-x86 and r-oldrel-macos-x86_64.

splines2 0.3.0

New features

• Added generalized Bernstein polynomials in function BersteinPoly.
• Added C++ interface that can be easily integrated with Rcpp.

Major changes

• Changed most implementations from R to C++ with help of Rcpp and RcppArmadillo to boost the performance.

Minor changes

• Made piece-wise constant bases continuous at right boundary knot for consistency with spline bases of non-zero degrees.
• Changed the default value of argument intercept in function iSpline and cSpline to TRUE for a complete set of spline bases in shape-restricted regression.
• Removed the corresponding M-spline basis from attributes of outputs from iSpline and cSpline.
• Removed the corresponding B-spline basis from attributes of outputs from bSpline.

Bug fixes

• Fixed deriv.mSpline method for third derivatives of scaled C-splines.

splines2 0.2.8

Bug fixes

• Fixed inconsistency of argument df for piece-wise constant bases when knots = NULL.

splines2 0.2.7

Minor changes

• Updated tests for R development version.

splines2 0.2.6

Minor changes

• Added checks for any internal knot incorrectly placed outside of the boundary knots and added warnings for users’ reference.

splines2 0.2.5

Minor changes

• Added more tests and increased code coverage.

Bug fixes

• Fixed evaluation of derivatives of M-splines for a single value. Thanks Ina Jazic for reporting the bug and providing possible fix.
• Fixed deriv.cSpline method for derivatives of order greater than two when scale = TRUE.

splines2 0.2.4

New features

• Added function dbs generating derivative of given order of B-splines. It is a similar function with splines::splineDesign. However, it provides a more user-friendly interface and more consistent handling on NA’s.
• Added deriv methods for derivatives of given order of any existing splines2 object that can be generated currently.

Major changes

• Added argument derivs to function mSpline and iSpline for derivatives.
• Changed all the classes of object generated for a better dispatching on methods.

Minor changes

• Added tests for all major functions with the help of package testthat.

Bug fixes

• Fixed the generation of splines without any internal knot.

splines2 0.2.3

Bug fixes

• Fixed one-piece constant basis for M-splines.

splines2 0.2.2

Bug fixes

• Fixed the NA’s handling in all the functions constructing spline bases.

splines2 0.2.1

New features

• Added function bSpline generating B-spline basis allowing zero degree or piecewise constant basis based on function bs in package splines.
• Introduced function bSpline to allow M-splines of degree zero.
• Added function cSpline constructing convex spline (C-spline) basis.
• Added predict methods for bSpline2 object and cSpline object generated by bSpline and cSpline, respectively.
• Added print methods for all splines2 objects developed so far.

Major changes

• Improved the function iSpline to construct I-spline basis directly from B-spline basis instead of M-spline basis.

Minor changes

• Updated all CRAN URL to a canonical form suggested.

splines2 0.1.0

New features

• The first version of splines2 providing functions constructing M-spline, I-spline, and integral of B-spline basis.