Hi,

I'm using maxlik with functions specified (L, his gradient & hessian).

Now I would like determine some robust standard errors of my estimators.

So I 'm try to use vcovHC, or hccm or robcov for example

 but in use one of them with my result of maxlik, I've a the following
error message :

 

Erreur dans terms.default(object) : no terms component

 

Is there some attributes to give to maxlik objet for "fitting" the call
of vcovHC?

 

Thank you

 


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