On Jun 14, 2012, at 13:03 , nalluri pratap wrote:
>
> Hi,
>
> I have a string t1="(Ithis) I(test)". I need to get t2="(Ithis) test".
>
> Can someone look into this. ?
Well, you can, it is your problem....
You need to look into the hairier parts of regular expression syntax. Looks
like the problem is to find the pattern I(XXXX) and replace with XXXX. For that
you need to use a back-reference (\1). Something like pattern: I\((.*)\)
replacement: \1
The tricky bit is to remember whether it is the "real" parentheses that need
escaping or the ones used for grouping; and, in R, to remember to escape all
backslashes in the regexps.
Lessee....
> gsub("I\\((.*)\\)", "\\1", "(Ithis) I(test)")
[1] "(Ithis) test"
> I have tried using gsub("I[^)]","",t1) , but didn't get the required result.
>
> Thanks,
> Pratap
> [[alternative HTML version deleted]]
>
> ______________________________________________
> 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.
--
Peter Dalgaard, Professor
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Email: pd....@cbs.dk Priv: pda...@gmail.com
______________________________________________
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.
