Kind folks, I have a data frame of mean values for 14 levels and 5 factors. I'd like to use a coplot to illustrate how the mean values change. Can anyone provide an example of how I can specify different ploting symbols in this plot. I'd like to use either use a five different colors (col) for the plotting symbol repeatedly in each of 14 panels, or 14 different symbols (pch) for the different levels. Either approach will work Thank you. -- Steve [[alternative HTML version deleted]]