[R] set working directory to current source directory

[Gabor Grothendieck]

On Mon, Aug 13, 2012 at 8:40 PM, Sachinthaka Abeywardana
<sachin.abeywardana at gmail.com> wrote:
> Hi all,
>
> Is there a way to get cran R to set the working directory to be wherever
> the source file is? Each time I work on a project on different computers I
> keep having to set the working directory which is getting quite annoying.
>
> Thanks,
> Sachin
>

You could use this:

source.and.set <- function(x) {
	setwd(dirname(x))
	source(x)
}
# use it like this:
source.and.set("/a/b/c.R")

or you could put this hack at the top of your source file in which
case whenever its source'd it will setwd to its directory:

this.dir <- dirname(parent.frame(2)$ofile)
setwd(this.dir)


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