or strsplit? test <-"k0298_7832_8964"
# Split and remove letters test <- unlist(strsplit(test, "\\_")) test <- gsub("[a-z]", "", test[1]) # Split on letters and underscore test <-"k0298_7832_8964" test <- unlist(strsplit(test, "[a-z]|\\_")) test[2] On Thu, 18 Feb 2016 at 18:43 Ben Tupper <btup...@bigelow.org> wrote: > Hi, > > Will substring work for you? > > ?substring > > Cheers, > Ben > > > On Feb 18, 2016, at 12:36 PM, Marine Regis <marine.re...@hotmail.fr> > wrote: > > > > Hello, > > > >> From this character string: > > > > test <-"k0298_7832_8964" > > > > how can I obtain: > > > > [[1]] > > > > "0298" > > > > Thank you very much for your help. > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > > 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. > > > > Ben Tupper > Bigelow Laboratory for Ocean Sciences > 60 Bigelow Drive, P.O. Box 380 > East Boothbay, Maine 04544 > http://www.bigelow.org > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.