try this:
> x <- c('v2FfaPre15', 'v2FfaPre10', 'v2FfaPre5', 'v2Ffa2',
> 'v2Ffa3', 'v2Ffa4')
> sub("^.*?([0-9]+)$", "\\1", x, perl=TRUE)
[1] "15" "10" "5" "2" "3" "4"
>
On Thu, Dec 3, 2009 at 9:00 AM, oscar linares <wins...@gmail.com> wrote:
> Dear Wiza[R]ds,
>
> I have a data.frame header that looks like this:
>
> v2FfaPre15 v2FfaPre10 v2FfaPre5 v2Ffa2 v2Ffa3 v2Ffa4
>
> I need it to look like this,
>
> 15 10 5 2 3 4
>
> i.e., with v2FfaPre and v2Ffa stripped off
>
> Any suggestions,
>
> Thanks in advance!
>
> --
> Oscar
> Oscar A. Linares, MD
> Translational Medicine Unit
> LaPlaisance Bay, Bolles Harbor
> Monroe, Michigan 48161
>
> Department of Medicine,
> University of Toledo College of Medicine
> Toledo, OH 43606-3390
>
> Department of Internal Medicine,
> The Detroit Medical Center (DMC)
> Harper University Hospital
> Wayne State University School of Medicine
> Detroit, Michigan 48201
>
> [[alternative HTML version deleted]]
>
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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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