Error in testInteractions when factor level combination is dropped

[MissTinger]

When the fixed-effect model matrix is rank deficient, a column / coefficient / factor level combination will be dropped.
In this case this code:

phia::testInteractions(model)

will give the error:

Error in dimnames(x) <- dn : 
  length of 'dimnames' [2] not equal to array extent

from this section of the code:

phia/R/testFactors.R

Line 71 in e075c9d

colnames(L) <- rownames(as.matrix(getCoef(model)))

This is because the left hand matrix L contains all possible combination of levels as columns whereas getCoef(model) returns a matrix which rows are only the coefficients that were used in the model (not dropped), thus

ncol(L) > nrow(as.matrix(getCoef(model)))

[heliosdrm]

Thanks for investigating that error. Can you provide a minimal working example where this happens (preferably with indications of what kind of output you would like to obtain), in order to see how to deal with that situation?