Dear Michael, Take a look at ?"%in%" This is an example: set.seed(123) x <- sample(0:9,10) y <- c(2,3) which(x %in% y) # [1] 1 3
HTH, Jorge On Wed, Jul 22, 2009 at 3:32 PM, Michael Knudsen <> wrote: > 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.
