how to set environment variables?

See the first paragraph of ?Startup.

If this is literally `Renviron' (not ~/.Renviron or Renviron.site) 
see also the Note in that help file.

Andy

From: Andreas Zankl

Thanks. Sys.putenv did work, however this has to be set every
time I start R.

gs is on my path and works fine under Unix, but I get the following
error when running bitmap (without setting R_GSCMD first):

/bin/sh: line 1: gs: command not found

I assume the problem is related to the fact that I am using the csh
shell, while the new Mac OS X default shell is now bash. So I guess
my .csh path settings are ignored by R calling bash. I solved the
problem by adding my R_GSCMD settings to the Renviron file
(R_GSCMD=${RGSCMD-'/sw/bin/gs'} in my case). Hope this helps anyone
with the same problem.

Thanks again for your help!
Andreas



At 12:51 +0100 20.10.2005, Prof Brian Ripley wrote:

On Thu, 20 Oct 2005, Andreas Zankl wrote:

The help file of the R bitmap function says that I have to set the
environment variable R_GSCMD to the path of my Ghostscript
installation.

Actually, it does not say that.  It says you _can_ specify the path
to your executable (not the installation) that way. It will work
without doing so if the executable 'gs' (on a Unix-alike) is on your
path, which it normally is on Unix-alikes.

How do I set this variable (either by commandline or in
R.app for Mac)? Sorry if this sounds like a very basic question, but
I could not find the answer anywhere else.

?Sys.putenv for how to do it from R.  help.search("environment
variable") got me there.

--
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

--
PLEASE NOTE MY NEW EMAIL ADDRESS: ANDREAS.ZANKL at GMAIL.COM

--------------------------
Andreas Zankl, MD
Division of Molecular Pediatrics
Clinique Infantile 02/50
CHUV
Avenue Pierre Decker 2
CH-1011 Lausanne
Switzerland
Phone: +41-21-3143778
Fax: +41-21-3143546
Email: andreas.zankl at gmail.com

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Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595