Usually you will want to look at simple effects of the factors when there is interaction. Please look at the WoodEnergy demos in the HH package. These examples use glht.
install.packages("HH") ## if you don't currently have HH library(HH) demo("MMC.WoodEnergy-aov") demo("MMC.WoodEnergy") Rich [[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.