Hi Farnoosh, May be this helps:
within(DataA,Var3 <- (Var1|Var2)+0) A.K. On Wednesday, March 5, 2014 6:03 PM, farnoosh sheikhi <farnoosh...@yahoo.com> wrote: Hi Arun, I have a data like below, I want to collapse var1 and var 2 together. DataA <- read.table(text="ID,Var1,Var2 1,1,0 2,0,1 3,0,0 4,0,1 5,1,0",sep=",",header=TRUE,stringsAsFactors=FALSE) var3 should be a new column (1,1,0,1,1) Thanks tons. ______________________________________________ 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.
