Hi Another option is
dat1$Newvar <- 1*(rowSums(dat1)>0) Regards Petr > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-bounces@r- > project.org] On Behalf Of arun > Sent: Friday, December 20, 2013 4:59 PM > To: R help > Subject: Re: [R] Using cbind to merge different variables > > HI, > > May be this helps: > set.seed(45) > dat1 <- as.data.frame(matrix(sample(0:1,100*5,replace=TRUE),ncol=5)) > > dat1$Newvar <- 1*(!!rowSums(dat1)) > > A.K. > > > Hello. > > I have a problem combining a number of variables. I have five columns > with binary variables with the values 0 and 1. I would like to combine > them into just one binary variable with 1 whenever just one of the > other has value one, and 0 if none of them have value one. > > How can I do that? > > I tried to use cbind function, but for some reason I get results > 1 even though all of the varuables included = 0 and for some rows I > get 2. I tried changing the deparse.level but that doesn't seem to be > the problem. > > I hope someone can help. > > Kind regards > > ______________________________________________ > 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. ______________________________________________ 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.
