[R] add and drop methods for mlm objects

[ZABALZA-MEZGHANI Isabelle]

Hello,

I would like to fit several responses depending on the same parameters. Thus
I generate an mlm object. On the other hand, for further analysis, I would
like to be able to simplify as much as possible the models.
Of course, there is no reason that the same formula applies for every
response. That is why I wonder if it exist a method such as drop1 for mlm
objects.

Waiting for your help,

Thanks in advance,

Isabelle.

Isabelle Zabalza-Mezghani
IFP
Rueil-Malmaison / France