On 07/11/2012 23:12, Marc Schwartz wrote:
On Nov 7, 2012, at 4:58 PM, r <ric.rom...@gmail.com> wrote:
Dear list, I have some .xls files that I need to read into R. I am
able to do so using read.xls in the gdata package, however the
helper functions sheetNames and sheetCount fail. This is the
error:
Unable to open file '~/SharedFolder/MyData/mydata.xls'. Warning:
running command ''/usr/bin/perl'
'/usr/local/lib/R/site-library/gdata/perl/sheetCount.pl'
'~/SharedFolder/MyData/mydata.xls'' had status 2
Googling I found that the problem is caused by the use of the
absolute path ("~/SharedFolder/MyData/") instead of
"/home/r/SharedFolder/MyData/". I use the absolute path because I
work from different computer connected to a shared folder.
This is the discussion I found:
http://stackoverflow.com/questions/11737906/path-specification-when-using-the-r-package-gdata
Is there a way to solve this problem??
Best Riccardo
You can contact the package maintainer (cc'd here) and suggest that
the use of:
normalizePath()
be implemented in the code, which would then do tilde expansion, etc.
when relative file paths are passed rather than absolute paths are
used.
If you just want tilde expansion, it is usually better to use path.expand().
normalizePath() is more drastic and can lead to paths the user will not
recognize on file systems with complex use of links.
R itself uses normalizePath() only where it needs to work hard to check
that paths are the same. One instance is .libPaths() (and it has led to
puzzlement there).
A workaround for now, would be to wrap your filename in that function
in your code, so that when you use relative paths, the appropriate
expansion is used and passed to the gdata function as the filename
argument.
I just made this change myself in the WriteXLS package at the request
of another useR.
Regards,
Marc Schwartz
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