Dear R helpers,
I have the following model
model_1<-glm(y~A+B+C+E+A:D,contrasts=list(D=contrasts_D),data=mydata,na.action=na.omit)
with: options(contrasts=c("contr.sum", "contr.poly"))
A,B and E are 2-levels factor,
C is covariate,
D is 20 levels factor with 10 in relation with the first levels of
factor A, the other in relation with the second levels of factor A
Here is my data, and the contrast I use for factor D.
https://depot.jouy.inra.fr/get?k=xzsA9nLhQSNbzq55MXo
I'm trying to use the effects package of Prof. J. Fox ,
(eff_model_1<-effect("A",model1))
but I get this error message:
" Error in apply(mod.matrix[, components], 1, prod) : subscript out
of bounds"
I suppose that the problem comes from the interaction A:D, but I can't
find a solution to solve it.
Does anyone know how to solve this problem??
thanks.
--------------------------------
Frederic Herault
INRA
France
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