[R] File path expansion
maechler at stat.math.ethz.ch
Mon May 28 11:44:28 CEST 2007
>>>>> "Duncan" == Duncan Murdoch <murdoch at stats.uwo.ca>
>>>>> on Fri, 25 May 2007 15:38:54 -0400 writes:
Duncan> On 5/25/2007 1:09 PM, Prof Brian Ripley wrote:
>> On Fri, 25 May 2007, Martin Maechler wrote:
>>>  "/home/maechler"
>> Yes, but beware that may not do what you want on Windows
>> in R <= 2.5.0, since someone changed the definition of
>> 'home' but not path.expand.
Duncan> A more basic problem is that the definition of "~"
Duncan> in Windows is very ambiguous. Is it my Cygwin home
Duncan> directory, where "cd ~" would take me while in
most probably not (see below). The normal R Windows users
needn't know about Cygwin.
Duncan> Is it my Windows CSIDL_PERSONAL folder,
Duncan> usually %HOMEDRIVE%/%HOMEPATH%/My Documents? Is it
Duncan> the parent of that folder, %HOMEDRIVE%/%HOMEPATH%?
Duncan> "~" is a shell concept that makes sense in Unix-like
Duncan> shells, but not in Windows.
Let's just say "~" is a short cut for
"The user's home directory".
And yes, that's been a Unix concept for ages, but I think
Windows had adopted that concept, probably with the above
The fact that some of windows software may not "work with"
the user's home directory (but rather a subdirectory of that),
may be a separate issue, but then, "I'm the windows-non-expert"
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