[R] how to set environment variables?

[Andreas Zankl]

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. 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.

Many thanks
Andreas

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--------------------------
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