Hi, try this,
data.frame(x,as.numeric(x %in% y)) HTH, baptiste On 7 March 2010 21:06, joseph <jdsan...@yahoo.com> wrote: > hello > > can you show me how to create a data.frame from two factors x and y. column 1 > should be equal to x and column 2 is 1 if it is common to y and 0 if it is > not. > > x=factor(c("A","B","C","D","E","F","G")) > y=factor(c("B","C","G")) > > the output should look like this: > A 0 > B 1 > C 1 > D 0 > E 0 > F 0 > G 1 > > Thanks > Joseph Dhahbi > > > > [[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. > -- ______________________________________________ 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.