[R] variance inflation factors

[Iasonas Lamprianou]

Dear all

I run a regression model with three predictors. When I try the Variance 
Inflation Factors command from Rcmdr menue, I get the message

vif(LinearModel.4)
ERROR:  attempt to set an attribute on NULL

and get no results. I know that there is high multicolinearity, but why does it 
not work? Maybe a bug?
I use Windows Vista and everything else seems to work OK.
 
Thank you
Dr. Iasonas Lamprianou




Assistant Professor (Educational Research and Evaluation)
Department of Education Sciences
European University-Cyprus
P.O. Box 22006
1516 Nicosia
Cyprus 
Tel.: +357-22-713178
Fax: +357-22-590539




Honorary Research Fellow
Department of Education
The University of Manchester
Oxford Road, Manchester M13 9PL, UK
Tel. 0044  161 275 3485
iasonas.lamprianou at manchester.ac.uk