Dear celpeda, Try this: x = c( "xxxxx1", "xxxxx2", "yyyyx3") substr(x,1,4) [1] "xxxx" "xxxx" "yyyy"
See ?substr for more details. HTH, Jorge On Wed, Apr 1, 2009 at 9:30 AM, calpeda <mauro.bias...@calpeda.it> wrote: > > hi > I ve a list of item x = ( "xxxxx1" > "xxxxx2" > "yyyyx3") > > I need to extract a new vector y = ( "xxxx", > "xxxx", > "yyyy" > ) > I mean, for each item I need to extract the first 4 digit > How is that possible? > > Thank you > > -- > View this message in context: > http://www.nabble.com/list-substring-tp22826435p22826435.html > Sent from the R help mailing list archive at Nabble.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. > [[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.
