[R] How to check if file is on a drive?

2009-12-03 Thread Sergey Goriatchev
Hello, everyone

How would I check in R if a particular file (Excel file) is in a
particular folder on a particular drive?
I am writing a piece of code around that file, using xls.open() in
xlsReadWritePro to open the file in memory and use it. But before I
try to open the file I want to catch the possibility of the file not
being on the drive.

Thank you in advance!

SG

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Re: [R] How to check if file is on a drive?

2009-12-03 Thread Romain Francois

?file.exists

On 12/03/2009 11:31 AM, Sergey Goriatchev wrote:


Hello, everyone

How would I check in R if a particular file (Excel file) is in a
particular folder on a particular drive?
I am writing a piece of code around that file, using xls.open() in
xlsReadWritePro to open the file in memory and use it. But before I
try to open the file I want to catch the possibility of the file not
being on the drive.

Thank you in advance!

SG


--
Romain Francois
Professional R Enthusiast
+33(0) 6 28 91 30 30
http://romainfrancois.blog.free.fr
|- http://tr.im/Gq7i : ohloh
|- http://tr.im/FtUu : new package : highlight
`- http://tr.im/EAD5 : LondonR slides

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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


Re: [R] How to check if file is on a drive?

2009-12-03 Thread Sergey Goriatchev
Great! Thank you, Romain!

On Thu, Dec 3, 2009 at 11:33, Romain Francois
romain.franc...@dbmail.com wrote:
 ?file.exists

 On 12/03/2009 11:31 AM, Sergey Goriatchev wrote:

 Hello, everyone

 How would I check in R if a particular file (Excel file) is in a
 particular folder on a particular drive?
 I am writing a piece of code around that file, using xls.open() in
 xlsReadWritePro to open the file in memory and use it. But before I
 try to open the file I want to catch the possibility of the file not
 being on the drive.

 Thank you in advance!

 SG

 --
 Romain Francois
 Professional R Enthusiast
 +33(0) 6 28 91 30 30
 http://romainfrancois.blog.free.fr
 |- http://tr.im/Gq7i : ohloh
 |- http://tr.im/FtUu : new package : highlight
 `- http://tr.im/EAD5 : LondonR slides





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