The first one replaces non-numerics with the empty string
and the second one returns numerics directly:
gsub("[^0-9]", "", "test_01.log")
# or
library(gsubfn)
strapply("test_01.log", "[0-9]+")[[1]]
On Fri, Jan 16, 2009 at 11:00 PM, Jörg Groß <jo...@licht-malerei.de> wrote:
> Hi,
>
> I have this variable;
>
>
> x <- c("test_01.log")
>
>
> and I want to extract the number (01) out of the variable.
> So that I get;
>
> > x
> [1] 1
>
>
>
> I tried strsplit, but I don't know how to refer to the result.
>
> Can someone help me with that?
> [[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.
>
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