Thanks Henrique.

This is indeed short and quite simple compared to what I was using which
goes like...

 

unlist(strsplit(i,split=" "))[grep("ENSP",unlist(strsplit(i,split=" ")))]
J

 

Cheers,

 

Praveen.

 

From: Henrique Dallazuanna [mailto:wwwhsd@gmail.com] 
Sent: 08 July 2009 14:18
To: praveen.surendran@ucd.ie
Cc: r-help@r-project.org
Subject: Re: [R] R regular expression to extract words with the query
string.

 

Try this:

sapply(strsplit(i, ' '), grep, pattern='ENSP', value = T)

On Wed, Jul 8, 2009 at 10:04 AM, Praveen Surendran
<praveen.surendran@ucd.ie> wrote:

Hi,



Is there a way in R to get the string which matches the expression, where
the expression is a substring of the parent string.



Lets say, I have $i <- "transcript:ENST0000112334 pid:ENSP000012345"

What I need is the string "pid:ENSP000012345" from $i using the query
"ENSP".



Appreciate your comments.



Praveen  Surendran

School of Medicine and Medical Sciences

University College Dublin

Belfiled, Dublin 4

Ireland.




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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O


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