# Introduction to the phylocomr package

#### Scott Chamberlain and Jeroen Ooms

#### 2019-12-19

`phylocomr` is an R client for Phylocom - a C library for Analysis of Phylogenetic Community Structure and Character Evolution.

Phylocom home page is at http://phylodiversity.net/phylocom/. The source code for Phylocom is at https://github.com/phylocom/phylocom/.

Phylocom is usually used either on the command line or through the R package `picante`, which has duplicated some of the Phylocom functionality.

Phylocom has been cited nearly 1000 times according to Google Scholar, so is clearly a very widely used piece of software. The goal with this package is to make it even easier to use - and in particular, to incorporate its use into a reproducible workflow entirely in R instead of going to the shell/command line for Phylocom usage. (Yes, some of Phylocom functionality is in `picante`, but not all.)

In terms of performance, some functionality will be faster here than in `picante`, but the maintainers of `picante` have re-written some Phylocom functionality in C/C++, so performance should be similar in those cases.

## Install

Install `ape` for below examples:

    install.packages('ape')

Stable `phylocomr` version from CRAN

    install.packages("phylocomr")

Or, the development version from Github

    devtools::install_github("ropensci/phylocomr")

    library("phylocomr")

## phylomatic

    taxa_file <- system.file("examples/taxa", package = "phylocomr")
    phylo_file <- system.file("examples/phylo", package = "phylocomr")
    (taxa_str <- readLines(taxa_file))
    (phylo_str <- readLines(phylo_file))
    ph_phylomatic(taxa = taxa_str, phylo = phylo_str)

## aot

    traits_file <- system.file("examples/traits_aot", package = "phylocomr")
    phylo_file <- system.file("examples/phylo_aot", package = "phylocomr")
    traitsdf_file <- system.file("examples/traits_aot_df", package = "phylocomr")
    traits <- read.table(text = readLines(traitsdf_file), header = TRUE,
      stringsAsFactors = FALSE)
    phylo_str <- readLines(phylo_file)
    ph_aot(traits = traits, phylo = phylo_str)

## bladj

    ages_file <- system.file("examples/ages", package = "phylocomr")
    phylo_file <- system.file("examples/phylo_bladj", package = "phylocomr")
    ages_df <- data.frame(
      a = c('malpighiales','salicaceae','fabaceae','rosales','oleaceae',
            'gentianales','apocynaceae','rubiaceae'),
      b = c(81,20,56,76,47,71,18,56)
    )
    phylo_str <- readLines(phylo_file)
    res <- ph_bladj(ages = ages_df, phylo = phylo_str)

    if (requireNamespace("ape")) {
      library(ape)
      plot(read.tree(text = res))
    }

plot