[R] File path expansion
Prof Brian Ripley
ripley at stats.ox.ac.uk
Fri May 25 19:09:10 CEST 2007
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.
>>>>>> "RobMcG" == McGehee, Robert <Robert.McGehee at geodecapital.com>
>>>>>> on Fri, 25 May 2007 11:44:27 -0400 writes:
> RobMcG> R-Help,
> RobMcG> I discovered a "mis-feature" is ghostscript, which is used by the bitmap
> RobMcG> function. It seems that specifying file names in the form "~/abc.png"
> RobMcG> rather than "/home/directory/abc.png" causes my GS to crash when I open
> RobMcG> the bitmap device on my Linux box.
> RobMcG> The easiest solution would seem to be to intercept any file names in the
> RobMcG> form "~/abc.png" and replace the "~" with the user's home directory. I'm
> RobMcG> sure I could come up with something involving regular expressions and
> RobMcG> system calls to do this in Linux, but even that might not be system
> RobMcG> independent. So, I wanted to see if anyone knew of a native R solution
> RobMcG> of converting "~" to its full path expansion.
> RobMcG> Thanks,
> RobMcG> Robert
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Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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