[R] Returning only a file path on Windows

amvds at xs4all.nl amvds at xs4all.nl
Fri May 22 16:45:08 CEST 2009

I am choosing a file like this:

#Bring up file selection box

Unfortunately, the file path contains the short file name and extension as
well. I had hoped to get only the path so I could make my own long
filenames (for output graphs) by concatenation with this file path.

Of course I can split the string and assemble the components from the
returned list:


But there must be a better way?

Thanks in advance,
Alex van der Spek

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