See if this helps:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/33330.html
Have no idea if it works w/o change in S-PLUS though.
Andy
From: Karl H|lber
>
> Hi everyone!
>
> One way of testing for homogeneity of variances is to
> use the absolut values of residuals (e. g. from a
> one-way ANOVA) and use these as response in a further
> one-way ANOVA. Significant differencies indicate
> non-constant variances (Levene test).
> Is this also possible in a multivariate design like
> one-way MANOVA. Are there better solutions to the
> problem?
>
> Thanks for your help
> Karl
>
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