Plotting of multiple comparisons?

Question

When one wishes to compare (test) multiple groups (as is the case, for example, when doing anova), one is confronted with the issue of multiple comparisons. The same applys

Answer 1

Package multcomp has e.g. plot.cld() -- you could try

library(multcomp)
example(plot.cld)

Also, a quick "multiple comparison plot" search at http://rseek.org reveals a few more packages and Task Views.