[R] Available environment variables

From: Thompson, David (MNR) <David.John.Thompson_at_ontario.ca>
Date: Thu, 20 Dec 2007 14:13:45 -0500


I am trying to set my environment to streamline the downloading / updating of packages. I have been through R-intro.html (10.8 Customizing-the-environment), R-FAQ (5.2 How can add-on packages be installed?), rw-FAQ, and help pages for Sys.setenv {base}, download.packages {utils}, etc.,.

I am looking for something similar to the download.packages destdir argument on a global environment level, e.g., destdir <- 'C:/Program Files/_dave/stats/R/library/_download' in Rprofile.site. Any suggestions?

Also, in a more general context, is there a way of listing all available (or common, or default, or standard, . . .) environment variables? I would like to know if there is an existing convention for any arbitrary process that I may try to do without reinventing the wheel. This same question could apply to options() other than those included with a standard installation.

Thanks, DaveT.

Silviculture Data Analyst
Ontario Forest Research Institute
Ontario Ministry of Natural Resources

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