I need to group some subjects according to two variables (var1, var2) I have a data frame that looks something like this:
Subject var1 var2 1 400 150 2 320 100 3 580 600 4 145 789 Each suject would fall into one of 2 categories ('A' or 'B'). I want to find (and see) all the possible combinations of letter assignment that exist, but every combination needs to have an equal amount of subjects categorized as 'A' or 'B'(eg. if I have 20 subjects there should be 10 assigned with letter 'A' and 10 with letter 'B') Thank you in advance for any hints, Judith ____________________________________________________________________________________ Never miss a thing. Make Yahoo your home page. ______________________________________________ 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.