[R] multcomp, simint, simtest and computation duration

[Douglas Bates]

Torsten Hothorn <Torsten.Hothorn at rzmail.uni-erlangen.de> writes:

> > I am trying to compute simultaneous confidence intervals with simint from the package multcomp. 230 measures (abundance) have been taken in 23 sites (factor) of a data.frame (donnees: a file can be sent on request, saved with save(donnees,file="donnees")). I would like to get all pairwise comparisons with :
> >
> > mc<- simint(ren~ID,type="Tukey",data=donnees)
> >
> 
> you try to solve a (23^2  - 23) = 506 dimensional integration problem via
> some form of Monte-Carlo technique. If the sample sizes in are balanced,
> you can use the `TukeyHSD' function.

Even without balanced sample sizes you can use TukeyHSD, although it
is most reliable if your sample sizes are close to balanced.