[R] fit.contrast (package gmodels) and lmer

[Dieter Menne]

Friends of lme,

following the documentation of fit.contrast in package gmodels, it should be
possible to use it with lmer. At least with sim.lmer=TRUE and lmer(not 2),
because the latter has no mcmcsamp yet.

I could not get this to work. UseR error?

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library(gmodels)
library(lme4)
options(show.signif.stars = FALSE)
data(ergoStool)
fm1 <- lmer(effort ~ Type + (1|Subject), ergoStool)
mcmcsamp(fm1) ## works

fit.contrast(fm1,"Type",c(1,1,0,0),sim.lmer=TRUE)
# Not an applicable method


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Note: I am well aware of the discussion about df/lmer in

http://wiki.r-project.org/rwiki/doku.php?id=guides:lmer-tests
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/76742.html

so I don't expect the method to work with sim.lmer=FALSE. And yes, the
example is simple and results can be obtained directly. However, I looking
for an easy-to-use general contrast test, and fit.contrast and estimable are
the only ones I know of that work rather generally.

Dieter