Dear R-helpers I am running R2.0.0 under Windows 2000. I am compiling a number of file paths into a simple text file that will be read by some other software we use. Unfortunately, it can only handle file paths with back slashes (MS Windows convention), and from R, I get file paths with forward slashes. The following didn't work.> gsub('/', '\\', 'c:/dir1/dir2/file.ext')[1] "c:dir1dir2file.ext"> gsub('/', '\\\\', 'c:/dir1/dir2/file.ext')[1] "c:\\dir1\\dir2\\file.ext" I have tried to find an answer on R-help, but didn't ;-( Thanks for helping me, Kind regards, J?rg Dr. J?rg Klausen phone : +41 (0)44 823 41 27 EMPA (134)/GAW/QA-SAC fax : +41 (0)44 821 62 44 ?berlandstrasse 129 mailto: joerg.klausen at empa.ch CH-8600 D?bendorf http://www.empa.ch/gaw Switzerland http://www.empa.ch/gaw/gawsis
try
sink("filename")
cat(paste(gsub('/', '\\\\',
'c:/dir1/dir2/file.ext'),"\n",gsub('/',
'\\\\', 'c:/dir1/dir2/file.ext'),"\n" ))
sink()
the idea is to use cat,
instead of paste you can do a for loop where you cat the string into the
sinked file
On Wed, 19 Jan 2005, Joerg Klausen wrote:
> Dear R-helpers
>
> I am running R2.0.0 under Windows 2000. I am compiling a number of file
paths into a simple text file that will be read by some other software we use.
Unfortunately, it can only handle file paths with back slashes (MS Windows
convention), and from R, I get file paths with forward slashes. The following
didn't work.
>
> > gsub('/', '\\', 'c:/dir1/dir2/file.ext')
> [1] "c:dir1dir2file.ext"
> > gsub('/', '\\\\', 'c:/dir1/dir2/file.ext')
> [1] "c:\\dir1\\dir2\\file.ext"
>
> I have tried to find an answer on R-help, but didn't ;-(
>
> Thanks for helping me,
> Kind regards,
> Jörg
>
> Dr. Jörg Klausen phone : +41 (0)44 823 41 27
> EMPA (134)/GAW/QA-SAC fax : +41 (0)44 821 62 44
> Überlandstrasse 129 mailto: joerg.klausen at empa.ch
> CH-8600 Dübendorf http://www.empa.ch/gaw
> Switzerland http://www.empa.ch/gaw/gawsis
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>
Joerg Klausen wrote:> Dear R-helpers > > I am running R2.0.0 under Windows 2000. I am compiling a number of file paths into a simple text file that will be read by some other software we use. Unfortunately, it can only handle file paths with back slashes (MS Windows convention), and from R, I get file paths with forward slashes. The following didn't work. > > >>gsub('/', '\\', 'c:/dir1/dir2/file.ext') > > [1] "c:dir1dir2file.ext" > >>gsub('/', '\\\\', 'c:/dir1/dir2/file.ext') > > [1] "c:\\dir1\\dir2\\file.ext"The latter worked very well, it's just a matter of print()ing: cat(gsub('/', '\\\\', 'c:/dir1/dir2/file.ext')) Uwe Ligges> I have tried to find an answer on R-help, but didn't ;-( > > Thanks for helping me, > Kind regards, > J?rg > > Dr. J?rg Klausen phone : +41 (0)44 823 41 27 > EMPA (134)/GAW/QA-SAC fax : +41 (0)44 821 62 44 > ?berlandstrasse 129 mailto: joerg.klausen at empa.ch > CH-8600 D?bendorf http://www.empa.ch/gaw > Switzerland http://www.empa.ch/gaw/gawsis > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
The second syntax is correct:
> gsub('/', '\\\\', 'c:/dir1/dir2/file.ext')
[1] "c:\\dir1\\dir2\\file.ext"
Indeed, R escapes backslashes. That is why they are doubled in R
strings. However, they appear as single backslashes in oyur text file:
> res <- gsub('/', '\\\\',
'c:/dir1/dir2/file.ext')
> cat(res, file = "test.txt")
> file.show("test.txt", delete.file = TRUE)
You got this in your file:
c:\dir1\dir2\file.ext
thus pretty readable by a Windows app.
Best,
Philippe Grosjean
..............................................<?}))><........
) ) ) ) )
( ( ( ( ( Prof. Philippe Grosjean
) ) ) ) )
( ( ( ( ( Numerical Ecology of Aquatic Systems
) ) ) ) ) Mons-Hainaut University, Pentagone (3D08)
( ( ( ( ( Academie Universitaire Wallonie-Bruxelles
) ) ) ) ) 8, av du Champ de Mars, 7000 Mons, Belgium
( ( ( ( (
) ) ) ) ) phone: + 32.65.37.34.97, fax: + 32.65.37.30.54
( ( ( ( ( email: Philippe.Grosjean at umh.ac.be
) ) ) ) )
( ( ( ( ( web: http://www.umh.ac.be/~econum
) ) ) ) ) http://www.sciviews.org
( ( ( ( (
..............................................................
Joerg Klausen wrote:> Dear R-helpers
>
> I am running R2.0.0 under Windows 2000. I am compiling a number of file
paths into a simple text file that will be read by some other software we use.
Unfortunately, it can only handle file paths with back slashes (MS Windows
convention), and from R, I get file paths with forward slashes. The following
didn't work.
>
>
>>gsub('/', '\\', 'c:/dir1/dir2/file.ext')
>
> [1] "c:dir1dir2file.ext"
>
>>gsub('/', '\\\\', 'c:/dir1/dir2/file.ext')
>
> [1] "c:\\dir1\\dir2\\file.ext"
>
> I have tried to find an answer on R-help, but didn't ;-(
>
> Thanks for helping me,
> Kind regards,
> J?rg
>
> Dr. J?rg Klausen phone : +41 (0)44 823 41 27
> EMPA (134)/GAW/QA-SAC fax : +41 (0)44 821 62 44
> ?berlandstrasse 129 mailto: joerg.klausen at empa.ch
> CH-8600 D?bendorf http://www.empa.ch/gaw
> Switzerland http://www.empa.ch/gaw/gawsis
>
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>
>
On Wed, Jan 19, 2005 at 02:50:41PM +0100, Joerg Klausen wrote:> I am running R2.0.0 under Windows 2000. I am compiling a number of file paths into a simple text file that will be read by some other software we use. Unfortunately, it can only handle file paths with back slashes (MS Windows convention), and from R, I get file paths with forward slashes. The following didn't work. > > > gsub('/', '\\', 'c:/dir1/dir2/file.ext') > [1] "c:dir1dir2file.ext" > > gsub('/', '\\\\', 'c:/dir1/dir2/file.ext') > [1] "c:\\dir1\\dir2\\file.ext" > > I have tried to find an answer on R-help, but didn't ;-(Sometimes, you don't find an(other) answer because you already have one... ;-) In this case, gsub('/', '\\\\', 'c:/dir1/dir2/file.ext') actually does what you want. Notice that print doesn't just dump the string, it renders it in a representation suitable for the righthand side in an R assignment. You could convince yourself with cat(gsub('/', '\\\\', 'c:/dir1/dir2/file.ext')) which actually does dump the string. Greetinx, Jan -- +- Jan T. Kim -------------------------------------------------------+ | *NEW* email: jtk at cmp.uea.ac.uk | | *NEW* WWW: http://www.cmp.uea.ac.uk/people/jtk | *-----=< hierarchical systems are for files, not for humans >=-----*
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