This help topic is for R version 0.90. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/base/html/source.html
source {base}R Documentation

Redirect Input

Description

source causes R to accept its input from the named file (the name must be quoted). Input is read from that file until the end of the file is reached. parse is used to scan the expressions in, they are then evaluated sequentially in the chosen environment.

Usage

source(file, local = FALSE, echo = verbose, print.eval = echo,
       verbose = .Options$verbose,  prompt.echo = .Options$prompt,
       max.deparse.length = 150, chdir = FALSE)

Arguments

file

character; the name of the file to read from (quoted).

local

if local is FALSE, the statements scanned are evaluated in the global environment, otherwise in the local calling source.

echo

logical; if TRUE, each expression is printed after parsing, before evaluation.

print.eval

logical; if TRUE, the result of eval(i) is printed for each expression i; defaults to echo.

verbose

if TRUE, more diagnostics (than just echo = TRUE) are printed during parsing and evaluation of input, including extra info for each expression.

prompt.echo

character; gives the prompt to be used if echo = TRUE.

max.deparse.length

integer; is used only if echo is TRUE and gives the maximal length of the “echo” of a single expression.

chdir

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

See Also

demo which uses source; eval, parse and scan; options("keep.source").

[Package base version 0.90 ]