> strings <- c("aaaa", "bbbb","ccba"). > > How to get "aaaa", "bbbb" that do not contain "ba" ?
I think this is what you want: > foo <- c("aaaa", "bbbb","ccba") > foo[-grep('ba', foo)] [1] "aaaa" "bbbb" cu Philipp -- Dr. Philipp Pagel Lehrstuhl für Genomorientierte Bioinformatik Technische Universität München Wissenschaftszentrum Weihenstephan 85350 Freising, Germany http://mips.gsf.de/staff/pagel ______________________________________________ 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.