Hi, hadley wickham wrote: h> Does this get you started? h> x <- factor(c("a", "b", "c")) h> factor(x, levels=c("c","b","a"), labels=c("cc","bb", "aa")) hmm, not really. I simply don't seem to get the concept of factors here... How do I combine the above code with my dataframe and pass it on to facet_grid??? Thanks Arne