Rajasekaramya wrote:
> hi there
>
> I have a vector with a set of data.I just wanna seperate them based on the
> first p and q values metioned within the data.
>
> [1] chr10p15.3 /// chr3q29 /// chr4q35 /// chr9q34.3
> [2] chr1q22-q24
> [3] chr1q22-q24
> [4] chr1pter-q24
> [5] chr1pter-q24
> [6] chr1pter-q24
>
> i used a regular expression [+q*] to match up the values but it matches q
> found anywhere i know i have written like that but i jus want it to match
> the first p or q values.
>
> my result should be for q and
> [2] chr1q22-q24
> [3] chr1q22-q24
>
> for p
> [1] chr10p15.3 /// chr3q29 /// chr4q35 /// chr9q34.3
> [4] chr1pter-q24
> [5] chr1pter-q24
> [6] chr1pter-q24
>
Something like
sub("[^pq]*([pq]).*","\\1",x)
should get you the first p or q
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
