R help - Aug 2012 - set working directory to current source directory

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

	[[alternative HTML version deleted]]

When you close R it asks whether to save the workspace. I often say
"yes" and later start R by double clicking on that workspace (named
.Rdata) -- then the wd is automatically set. Alternatively you can
have setwd("X:/some/thing") at the beginning of your source file.

On Tue, Aug 14, 2012 at 3:40 AM, 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
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

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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Hi Sachin,
> 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.
a while ago I asked a somewhat similar question on stackoverflow:

http://stackoverflow.com/questions/8835426/get-filename-and-path-of-sourced-file

You may want to have a look at the suggestions I got.

Best,

Claudia 




-- 
Claudia Beleites
Spectroscopy/Imaging
Institute of Photonic Technology 
Albert-Einstein-Str. 9
07745 Jena
Germany

email: claudia.beleites at ipht-jena.de
phone: +49 3641 206-133
fax:   +49 2641 206-399