[R] Collineariy Diagnostics

Antoine de Bary antoine at ruetter.ch
Tue Sep 13 09:25:34 CEST 2005

Hi, and thanks for your help

in order to do collinearity analysis I downloaded the perturb package. I run
a lm (regression) and on that the ³calldiag² commad to get condition numbers
but i get the following message: the variable XY with modus ³numeric² was
not found (it does the same with all predictors despite all variables are
numeric and exists).

Can anyone tell me how can I go arround this problem? Is there another way
to have ³condition numbers²? What about VIF?

Please return message to: antoine at ruetter.ch

Thanks a lot


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