Does anybody knows what this error message means:
Error in object$terms : $ operator not defined for this S4 class
I have peformed the following steps:
library(lattice)
library(Matrix)
library(lme4)
inkm inkm$Gamie glm.incm drop1(glm.incm,test="Ch") Error in object$terms : $
operator not defined for this S4 class
Your suggestin would be of a greatl help to me,
Martin
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