Without having any actual idea what you mean (sample data!), this might work:
sex <- c(1,0,1,0) sex1 <- c(1,1,0,0) samesex <- ifelse(sex == 1 & sex1 == 1, 1, 0) Note that this does NOT return 1 if both initial variables are 0, so it isn't really a samesex indicator, but it is my best guess as to what you might want. Sarah On Thu, Nov 10, 2011 at 5:13 AM, David . <loove...@hotmail.com> wrote: > > Dear R-project! > > How do i create 1 dummy from 2 already existing dummys. To be more precise, I > want to create a dummy from a dummy called "sex" and another called "sex1" > when both thoose dummys are 1 I want my created dummy "samesex" to take 1. > > Thanks for the help! > > Paulie > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.
