Re: [R] How to convert "c:\a\b" to "c:/a/b"?

From: Spencer Graves <spencer.graves_at_pdf.com>
Date: Tue 28 Jun 2005 - 13:38:47 EST

Hi, Gabor, James, et al.:

          Thanks for the help. I'm unable to get "scan('clipboard', what='', allowEscapes=FALSE))" to work reliably on my system using Rgui under Windows XP, R 2.1.1 patched. However, "file.choose()" works like a charm.

	  Thanks again, everyone.
	  spencer graves

Gabor Grothendieck wrote:

> Try using file.choose() to locate the file instead of Windows Explorer.  That 
> will return the name in a form useable within R.
> 
> On 6/27/05, Spencer Graves <spencer.graves@pdf.com> wrote:
> 

>> Thanks, Dirk, Gabor, Eric:
>>
>> You all provided appropriate solutions for the stated problem.
>>Sadly, I oversimplified the problem I was trying to solve: I copy a
>>character string giving a DOS path from MS Windows Explorer into an R
>>script file, and I get something like the following:
>>
>> D:\spencerg\statmtds\R\Rnews
>>
>> I want to be able to use this in R with its non-R meaning, e.g., in
>>readLine, count.fields, read.table, etc., after appending a file name.
>>Your three solutions all work for my oversimplified toy example but are
>>inadequate for the problem I really want to solve.

>>
>> Thanks,
>> spencer graves
>>
>>Gabor Grothendieck wrote:
>>
>>
>>>On 6/27/05, Dirk Eddelbuettel <edd@debian.org> wrote:
>>>
>>>
>>>>On 26 June 2005 at 20:30, Spencer Graves wrote:
>>>>| How can one convert back slashes to forward slashes, e.g, changing
>>>>| "c:\a\b" to "c:/a/b"? I tried the following:
>>>>|
>>>>| > gsub("\\\\", "/", "c:\a\b")
>>>>| [1] "c:\a\b"
>>>>
>>>>This does work, provided you remember that single backslashed "don't exist"
>>>>as e.g. \a is a character in itself. So use doubles are you should be fine:
>>>>
>>>>
>>>>
>>>>>gsub("\\\\", "/", "c:\\a\\b")
>>>>
>>>>[1] "c:/a/b"
>>>>
>>>
>>>
>>>Also, if one finds four backslashes confusing one can avoid the use
>>>of four via any of these:
>>>
>>>gsub("[\\]", "/", "c:\\a\\b")
>>>gsub("\\", "/", "c:\\a\\b", fixed = TRUE)
>>>chartr("\\", "/", "c:\\a\\b")
>>>
>>>______________________________________________
>>>R-help@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
>>
>>--
>>Spencer Graves, PhD
>>Senior Development Engineer
>>PDF Solutions, Inc.
>>333 West San Carlos Street Suite 700
>>San Jose, CA 95110, USA
>>
>>spencer.graves@pdf.com
>>www.pdf.com <http://www.pdf.com>
>>Tel: 408-938-4420
>>Fax: 408-280-7915
>>
>
>
-- 
Spencer Graves, PhD
Senior Development Engineer
PDF Solutions, Inc.
333 West San Carlos Street Suite 700
San Jose, CA 95110, USA

spencer.graves@pdf.com
www.pdf.com <http://www.pdf.com>
Tel:  408-938-4420
Fax: 408-280-7915

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Received on Tue Jun 28 13:46:36 2005

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