This works, where zz is a dataframe: for(i in 1:nrow(zz)) { zzz[i,1]<-paste(zz[i,1],zz[i,2],sep="_") }
I would like to use "apply" to concatentate two columns of text along with a separator. How? Chet [[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.