Thanks. It works! I think I found another solution, working straight with the indicator matrix.
> count <- factor(table(apply(ind, 1, paste, collapse=""))) However, that way I can't store the indices of the collapsed rows. -Angelos Markos ______________________________________________ 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.
