[R] post hoc test after lme

[Casimir]

Hi!

I am quiet new with R and I have some problems to perform a posthoc test
with an lme model.
My model is the following:

>lme1<-lme(eexp~meal+time, random=~1|id,na.action=na.omit)

and then i try to get a post hoc test:

>summary(glht(lme1,linfct=mcp(meal="Tukey)))

but I get a warning message: Erreur dans as.vector(x, mode) : argument
'mode' incorrect

Thank you for your help

Guillaume
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