Is this what you want:
> x <- 'xxxx xxxx one two three xxxx xxxx'
> y <-
> sub(".*?([^[:space:]]+)[[:space:]]+([^[:space:]]+)[[:space:]]+([ehrt]{5}).*",
+ "\\1 \\2 \\3", x, perl=TRUE)
> unlist(strsplit(y, ' '))
[1] "one" "two" "three"
On Sun, Nov 8, 2009 at 1:51 PM, Hadley Wickham <had...@rice.edu> wrote:
> Hi all,
>
> Is there a tool in base R to extract matched expressions from a
> regular expression? i.e. given the regular expression "(.*?) (.*?)
> ([ehtr]{5})" is there a way to extract the character vector c("one",
> "two", "three") from the string "one two three" ?
>
> Thanks,
>
> Hadley
>
> --
> http://had.co.nz/
>
> ______________________________________________
> R-help@r-project.org mailing list
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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.
>
--
Jim Holtman
Cincinnati, OH
+1 513 646 9390
What is the problem that you are trying to solve?
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