[R-sig-ME] glht & lmer (was: Post hoc tests with lme)

[Jarrett Byrnes]

This also makes me wonder, is it possible to use glht to incorporate  
random effects as well?  E.g., if a fixed effect differs by, say,  
block, can one use glht to test whether the effect differs within each  
block?

On Apr 16, 2008, at 9:16 PM, Michael Kubovy wrote:

> I wonder if there's a problem with glht and the current version of  
> lmer
> From http://epub.ub.uni-muenchen.de/2120/1/tr019.pdf :
>
> require(multcomp)
> require(lme4)
> data(trees513)
> mmod <- lmer(damage ~ species - 1 + (1 | plot) + (1 | lattice), data =
> trees513, family = binomial())
> K <- diag(length(fixef(mmod)))
> (ci <- confint(glht(mmod, linfct = K)))
>
> 	 Simultaneous Confidence Intervals
>
> Fit: Error in x$model$call : $ operator not defined for this S4 class
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