[R] Globbing Files in R

[Gabor Grothendieck]

Try this:

file.names <- dir(pattern = glob2rx("/mydir/*.txt"))
for(fn in file.names) {
  DF <- read.table(fn, ...)
  ...
}

Another possibility is:

file.names <- .. as above ...
out <- lapply(file.names, function(fn) {
   DF <- read.table(fn, ...)
   ...
})

out will have one component per file formed from the result of the
each function application.


On Sun, Dec 21, 2008 at 10:35 AM, Gundala Viswanath <gundalav at gmail.com> wrote:
> Dear all,
>
> For example I want to process set of files.
>
> Typically  Perl's idiom would be:
>
> __BEGIN__
> @files = glob("/mydir/*.txt");
>
> foreach my $file (@files) {
>  # process the file
> }
> __END__
>
> What's the R's way to do that?
>
> - Gundala Viswanath
> Jakarta - Indonesia
>
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