fields <- c("2154333b-3208-4519-8b76-acaef5b5a479",
"980958a0-103b-4ba9-afaf-27b2f5c24e69",
"00966654-0dea-4899-b8cf-26e8300b262d")
sub("^([0-9]*).*$", "\\1", fields)
Best,
Philippe Grosjean
> On 30 Nov 2015, at 11:39, Abhinaba Roy <abhinabaro...@gmail.com> wrote:
>
> Hi,
>
> I have a field with alpha numeric codes like,
>
> 2154333b-3208-4519-8b76-acaef5b5a479 980958a0-103b-4ba9-afaf-27b2f5c24e69
> 00966654-0dea-4899-b8cf-26e8300b262d
> I want a derived field which will contain ONLY the numeric part before the
> first alphabet and the first '-',
>
> for example the derived field from the sample above will give me
>
> 2154333
> 980958
> 00966654
>
> How can this be achieved in R?
>
> P.S. I do not have much knowledge on regex. It would be of great help if
> you could suggest some reading for beginners.
>
> Thanks,
> Abhinaba
>
> [[alternative HTML version deleted]]
>
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