The multinomial logit model is a kind of model which has both alternative variant and invariant independent variables. In such a case, there is a requirement to change into a long format using data frame syntax due to variables nature.

But, I want to use R commander(Rcmdr) to calibrate multinomial logit model. how can I consider these alternative variant and invariant variables?

Alternative specific(alternative variant) variables are: act+wtt+invtt+lact+TC

Generic(alternative invariant) Variables: factor(GEN)+AGE+factor(OCC)+factor(INC)+factor(MAR)+factor(OWN)+factor(Routesused)+DIST...

model 1

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