Hello, I am using triangle.class in ade4 package and a factor. I would like to use this graphic parameter (pch) to set a different kind of point for each group in my factor (lakes). I have tried pch=1:4, I guess it does what it is supposed to do but not what I want. I can't use colors. Thank you in advance, -- View this message in context: http://www.nabble.com/triangle.class-pch-per-factor-tp23502805p23502805.html Sent from the R help mailing list archive at Nabble.com.