[R] reading non-existent files

[Christian.Stratowa@vie.boehringer-ingelheim.com]

Great, thank you for the fast reply

Regards
Christian Stratowa

==============================================
Christian Stratowa, PhD
Boehringer Ingelheim Austria
Dept NCE Lead Discovery - Bioinformatics
Dr. Boehringergasse 5-11
A-1121 Vienna, Austria
Tel.: ++43-1-80105-2470
Fax: ++43-1-80105-2683
email: christian.stratowa at vie.boehringer-ingelheim.com

> -----Original Message-----
> From:	Ben Bolker [SMTP:ben at zoo.ufl.edu]
> Sent:	Tuesday, January 28, 2003 4:15 PM
> To:	Stratowa,Dr,Christian   FEX BIG-AT-V
> Cc:	r-help at stat.math.ethz.ch
> Subject:	Re: [R] reading non-existent files
> 
> 
>   ?file.exists
> 
> On Tue, 28 Jan 2003 Christian.Stratowa at vie.boehringer-ingelheim.com wrote:
> 
> > Dear R-experts
> > 
> > I would like to read all files from a directory, the files have names
> > "myname0001.txt" etc. I paste the directory plus file names and
> > use "read.delim()".
> > My problem is that some file names are missing, so I get an error
> > and my program stops.
> > Is there a way to check for a null pointer analogous to C, so that
> > I can simply skip non-existent filenames?
> > 
> > Please do "Reply to all" since in the company I am not subscribed
> > to the R-help list.
> > 
> > Thank you in advance
> > Best regards
> > Christian Stratowa
> > 
> > ==============================================
> > Christian Stratowa, PhD
> > Boehringer Ingelheim Austria
> > Dept NCE Lead Discovery - Bioinformatics
> > Dr. Boehringergasse 5-11
> > A-1121 Vienna, Austria
> > Tel.: ++43-1-80105-2470
> > Fax: ++43-1-80105-2683
> > email: christian.stratowa at vie.boehringer-ingelheim.com
> > 
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > http://www.stat.math.ethz.ch/mailman/listinfo/r-help
> > 
> 
> -- 
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> Zoology Department, University of Florida    http://www.zoo.ufl.edu/bolker
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