Why not just construct a valid file name and use that in cat? You can then use file.path to join paths together if you want to write to a specific location, as in your example.
steve -----Original Message----- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Wincent Sent: Wednesday, May 09, 2012 11:15 AM To: Tal Galili Cc: r help Subject: Re: [R] file path Hmm, I don't think it gives what I want. For example, I assign a file name to f, > f <- "a?b.txt" > file.path("e:",f) [1] "e:/a?b.txt" The resultant character is not accepted as a file name by Windows OS. On 9 May 2012 20:32, Tal Galili <tal.gal...@gmail.com> wrote: > Hi Wincent, > Have a look at: > ?file.path > > > > ----------------Contact > Details:------------------------------------------------------- > Contact me: tal.gal...@gmail.com | 972-52-7275845 Read me: > www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | > www.r-statistics.com (English) > ---------------------------------------------------------------------- > ------------------------ > > > > > On Wed, May 9, 2012 at 11:03 AM, Wincent <ronggui.hu...@gmail.com> wrote: >> >> Dear all, is there any function to assert whether a file path is >> legitimate, and to convert any potential file path to a legitimate >> file path? >> >> I automate a batch of files and write them to plain text files with >> cat(). The file argument of cat() is generated automatically which >> may contain characters such as ? < >, unacceptable in Windows OS. >> What I do at this moment is to strip such characters off with gsub(). >> Is there any direct way to make legitimate file path without detailed >> knowledge about the naming rule specific to a OS? >> >> Best >> >> -- >> Wincent Ronggui HUANG >> Sociology Department of Fudan University PhD of City University of >> Hong Kong http://homepage.fudan.edu.cn/rghuang/cv/ >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. > > -- Wincent Ronggui HUANG Sociology Department of Fudan University PhD of City University of Hong Kong http://homepage.fudan.edu.cn/rghuang/cv/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
