Thanks David, that's exactly what I needed.

2012/11/2 David L Carlson <dcarlson@tamu.edu>

> Aren't you just looking for this?
>
> > default.wd <- setwd(tmp.wd <- choose.dir())
>
> ----------------------------------------------
> David L Carlson
> Associate Professor of Anthropology
> Texas A&M University
> College Station, TX 77843-4352
>
>
> > -----Original Message-----
> > From: r-help-bounces@r-project.org [mailto:r-help-bounces@r-
> > project.org] On Behalf Of Berend Hasselman
> > Sent: Friday, November 02, 2012 3:36 PM
> > To: Markus Holotta
> > Cc: r-help@r-project.org
> > Subject: Re: [R] Strange behaviour of setwd/getwd
> >
> >
> > On 02-11-2012, at 21:02, Markus Holotta wrote:
> >
> > > Maybe my question was not clear enough:
> > > default.wd is the working dir defined in the RStudio options.
> > > In my script I want to change it temporarily to another directory by
> > setwd(choose.dir()) and set it back to the default.wd before calling
> > another script. But after choosing the new directory tmp.wd shows the
> > same path in the workspace as default.wd. Calling getwd() shows the
> > correct path.
> > > Hope its clearer now.
> > >
> >
> > No.
> > Read the help for setwd().
> >
> > setwd returns the current directory before the change, invisibly and
> > with the same conventions as getwd. It will give an error if it does
> > not succeed (including if it is not implemented).
> >
> > The essential bit is "before the change".
> >
> > Berend
> >
> >
> > >
> > > Am 02.11.2012, 19:14 Uhr, schrieb Duncan Murdoch
> > <murdoch.duncan@gmail.com>:
> > >
> > >> On 02/11/2012 12:57 PM, Markus Holotta wrote:
> > >>> I've found the following strange behaviour R (RStudio) which has
> > been
> > >>> confirmed by another user in RGui.
> > >>>
> > >>>
> > >>> Inside a script I want to set two variables:
> > >>>
> > >>> default.wd = getwd()
> > >>> tmp.wd = setwd(choose.dir())
> > >>>
> > >>> After choosing tmp.wd the value of default.wd is shown in
> > Workspace, but
> > >>> getwd() is giving back the correct string of tmp.wd.
> > >>>   Is there a workaround for the problem?
> > >>>
> > >>
> > >>
> > >> It's not clear what the problem is from your post.  As the help page
> > says, both default.wd and tmp.wd should be the same after executing
> > those two lines.  If you want to store both the old and new
> > directories, you should do it like this:
> > >>
> > >> old.wd <- setwd(choose.dir())
> > >> new.wd <- getwd()
> > >>
> > >> Duncan Murdoch
> > >
> > > ______________________________________________
> > > R-help@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.
> >
> > ______________________________________________
> > R-help@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.
>
>

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