Hi Sorry if my post wasn't clear. R version: 2.0.0 OS: SuSE 9.1 Pentium IV laptop
I have been creating boxplots as follows: boxplot(gene~Group) [additional options left out for simplicity] and the problem was that the boxplots were plotted in alphabetical order, rather than the order in which I wanted them to be plotted. Thanks for your suggestions - now that I know a little more about factors, I have been able to arrange the order of the levels of the factor "Group" and all is well! Thanks for your patience and help Paul ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html