[R] Retrieve regular expression groups

Gabor Grothendieck ggrothendieck at gmail.com
Mon May 3 01:02:25 CEST 2010

The strapply function in gsubfn does that.  See http://gsubfn.googlecode.com

On Sun, May 2, 2010 at 6:03 PM, OKB (not okblacke)
<brenbarn at brenbarn.net> wrote:
>        I'm trying to figure out how to get the text captured by capturing
> groups out of a regex match.  For instance, let's say I have the pattern
> "foo ([^ ]+)" and I match it against the string "This is a foo sentence
> I am reading."  The group in the pattern will match the word "sentence"
> in the target string.  How can I get access to this matched group?  All
> I can seem to get the various grep/gsub functions to do is return or
> modify the entire target string.  Isn't there a way to extract ONLY the
> text from a particular group or groups?
> Thanks,
> --
> --OKB (not okblacke)
> Brendan Barnwell
> "Do not follow where the path may lead.  Go, instead, where there is
> no path, and leave a trail."
>        --author unknown
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