[R] package MuMI

[Marino Taussig De Bodonia, Agnese]

Hello,

I am using the package "MuMI" to run all the possible combinations of variables in my full model, and select my best models. When I enter my variables in the original model I write them like this

lm(y~ a +b +c +a:b)

However,  "MuMI" will also use the variable b:a, which I do not want in my model.

How do I stop that from happening?

Thank you,

Agnese