On 04.03.2011 15:16, Dennis Fisher wrote:
Colleagues,
I am trying to understand how R (2.12.1) obtains the PATH environment variable
in Windows (7 or Vista). Startup {base} directs one to:
"R_ENVIRON" -- which equals "" in my systems
R_HOME/etc/Renviron.site -- which does not exist
Next, it directs to:
R_HOME/etc/Rprofile.site -- which also does not exist (the expected behavior in a
"factory-fresh" installation)
You can create any of these files and set env variables therein.
If you want to change PATH, you can do so as well in the control panel
(system).
The current value can be shown by
Sys.getenv("PATH")
in R.
Uwe Ligges
I found the following files in R_HOME/etc:
Makeconf
Rcmd_environ
Rconsole
Rdevga
respositories
rgb.text
Rprofile.txt
none of which refer to PATH (except Makeconf, which refers to JAVA path, but
not to PATH itself)
Today's R-SIG-Mac Digest addresses a similar issue in OS X -- that R.app gets
the values from /.MacOSX/environment.plist whereas a session started in
Terminal uses .bashrc or /etc/profile. What are the corresponding sources in
Windows?
Thanks in advance.
Dennis
Dennis Fisher MD
P< (The "P Less Than" Company)
Phone: 1-866-PLessThan (1-866-753-7784)
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
