Try this: gregexpr("\\.", X)
On Wed, Oct 1, 2008 at 3:56 PM, phoebe kong <[EMAIL PROTECTED]> wrote: > Hi all, > > I would like to check if a string contains "." in it. If yes, I would like > to know the position of "." in the string. > > Eg: X<-"NM1236.3" > > In above example, "." is at position 7. > > I tried functions grep() and match(). It seems they couldn't detect ".". > > > Thanks in advance for your help, > Sityee > > [[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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ 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.