This help topic is for R version 1.5.0. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/base/html/sys.source.html
sys.source {base}R Documentation

Parse and Evaluate Expressions from a File

Description

Parses expressions in the given file, and then successively evaluates them in the specified environment.

Usage

sys.source(file, envir = NULL, chdir = FALSE,
           keep.source = getOption("keep.source.pkgs"))

Arguments

file

a character string naming the file to be read from

envir

an R object specifying the environment in which the expressions are to be evaluated. May also be a list or an integer. The default value NULL corresponds to evaluation in the base environment. This is probably not what you want; you should typically supply an explicit envir argument.

chdir

logical; if TRUE, the R working directory is changed to the directory containing file for evaluating.

keep.source

logical. If TRUE, functions “keep their source” including comments, see options(keep.source = *) for more details.

Details

For large files, keep.source = FALSE may save quite a bit of memory.

See Also

source, and library which uses sys.source.

[Package base version 1.5.0 ]