Robert Ruser <robert.ruser <at> gmail.com> writes: > > Hello R Users, > I'm wondering if there exists any elegant and simple way to do the > following: I have a data.frame X fills in numbers. I have a vector y with > numbers as well. Every value in X that is equal to any values in y should > be replaced by e.g. 1. Any idea? > > Robert >
If the data frames are completely filled with numbers you should be able to operate on them as matrices (?as.matrix, ?as.data.frame). X <- matrix(1:16,nrow=4) Y <- matrix(rep(2:5,4),nrow=4) (X[X %in% c(Y)] <- 1) ______________________________________________ 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.
