[R] Can I set the proxy server and authentification from within R?

[Werner Wernersen]

Thanks a lot for your help!

One more remark if somebody runs into the same
problem:
The .Renviron file has to be in the correct directory.
It can be checked with 
Sys.getenv('http_proxy') that the settings have been
actually read in.

The ".Renviron" file looks like this now:
http_proxy=http://proxyname.domain.com:8080/
http_proxy_user=username:password

Thanks again,
   Werner