Source R files

include(
  files_andor_dirs,
  envir = parent.frame(),
  chdir = FALSE,
  recursive = FALSE
)

Arguments

files_andor_dirs: A character vector of filepaths to R files, or directories containing R files. Directories are searched for files that end with extension ".R" or ".r", ignoring those that start with a period (.) or an underscore (_). The found files files from each directory are sorted by their basename() before being sourced. Filepaths can be supplied explicitly to override the default sorting.
envir: An R environment. By default, the current R evaluation environment.
chdir: logical; if TRUE, the R working directory is changed to the directory containing file for evaluating.
recursive: whether to search directories recursively for R files.

The environment envir, invisibly.

This is a vectorized wrapper around base::sys.source with some differences. Notably:

envir defaults to the current frame
envir is returned (invisibly)
keep.source and keep.parse.data default to getOption("keep.source") and getOption("keep.parse.data") respectively, instead of getOption("keep.source.pkgs") and getOption("keep.parse.data.pkgs")
toplevel.env is set to getOption("topLevelEnvironment", envir). In other words, if the option topLevelEnvironment is already set, it is respected.