[R] reading non-existent files

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

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