[R] problems perfroming the vuong test

From: mirko sanpietrucci <mirko.sanpietrucci_at_email.it>
Date: Sun 15 Oct 2006 - 08:24:20 GMT


Dear All,
I am using the function vuong of the package pscl to compare 2 non nested glm models with a numeric response.
I did the following

m1<-glm(y ~x ,data=xxx)
m2<-glm(y ~z , data=xxx)

When calling the vuong function I get the following message:

> vuong(m1,m2)
Error in predprob.glm(m1) : your object of class glm is unsupported by predprob.glmyour object of class lm is unsupported by predprob.glm

My guess is that this function does not support numeric response!!!!! How can I solve the problem?

Any help will be really appreciated.

mirko



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