That's exactly what I want! Thanks! -Ed On Wed, Feb 27, 2019 at 5:14 PM David L Carlson <dcarl...@tamu.edu> wrote: > > I'm not sure I completely understand your question. Would using grepl() > instead of grep() let you do what you want? > > ---------------------------------------- > David L Carlson > Department of Anthropology > Texas A&M University > College Station, TX 77843-4352 > > -----Original Message----- > From: R-help <r-help-boun...@r-project.org> On Behalf Of Ed Siefker > Sent: Wednesday, February 27, 2019 5:03 PM > To: r-help <r-help@r-project.org> > Subject: [R] inverse of which() > > Given a vector of booleans, chich() will return indices that are TRUE. > > Given a vector of indices, how can I get a vector of booleans? > > My intent is to do logical operations on the output of grep(). Maybe > there's a better way to do this? > > Thanks > -Ed > > ______________________________________________ > 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.
______________________________________________ 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.