I am new to R and am sure this is simple, but I been unable to find a solution.
I have 5 columns of data labeled "X", "Y", "A","B","C". I can easily xyplot(Y ~ X | A) but I want the colors of the symbols to be based upon the values of B and the shape of the symbols to be determined by C. There are approximately four distinct values of B and C (say "b1","b2","b3","b4" and "c1","c2","c3","c4", respectively) Either a solution or a pointer to a specific reference/example is greatly appreciated. Thanks, Mark [[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.