Try which(x %in% y) HTH
KJ "Philip Twumasi-Ankrah" <nana_kwadwo_der...@yahoo.com> wrote in message news:519822.56196...@web39502.mail.mud.yahoo.com... This should work which((x==2)|(x==3)) --Quotable Quotes----------------------------- A Smile costs Nothing But Rewards Everything - Anonymous Happiness is not perfected until it is shared -Jane Porter --- On Wed, 7/22/09, Michael Knudsen <micknud...@gmail.com> wrote: From: Michael Knudsen <micknud...@gmail.com> Subject: [R] Find multiple elements in a vector To: "r help" <r-help@r-project.org> Date: Wednesday, July 22, 2009, 2:32 PM Hi, Given a vector, say x=sample(0:9,10) x [1] 0 6 3 5 1 9 7 4 8 2 I can find the location of an element by which(x==2) [1] 10 but what if I want to find the location of more than one number? I could do c(which(x==2),which(x==3)) but isn't there something more streamlined? My first guess was y=c(2,3) which(x==y) integer(0) which doesn't work. I haven't found any clue in the R manual. Thanks! -- Michael Knudsen micknud...@gmail.com http://lifeofknudsen.blogspot.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.
