Hi, New to R here. Lots of fun. Still rather green though.
I'd like to select unique items from a list that looks like this (for example): > xyz $x [1] 8 6 9 0 0 3 9 7 1 9 $y [1] 1 2 9 5 1 2 0 9 2 9 $z [1] 5 6 9 0 5 1 1 7 3 4 I'd like to select unique (x,y), while preserving association with z values. When there are duplicate (x,y) pairs, it doesn't really matter which (x,y,z) triplet gets preserved - selecting the first would be fine, but any other way to do it would be fine also. It /would/ be handy to also get a list of the rejected triplets, if that's possible. Ideas? Thanks! R [[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.