Dear Werner,
> -----Original Message----- > From: Werner Stahel [mailto:[EMAIL PROTECTED] > Sent: Friday, September 16, 2005 2:37 AM > To: Martin Maechler > Cc: R-devel@stat.math.ethz.ch; John Maindonald; Werner > Stahel; John Fox > Subject: Re: plot(<lm>): new behavior in R-2.2.0 alpha > . . . > > For most plots, I like to see a smoother along with the points. > I suggest to add the option to include smoothers, not only as > an argument to plot.lm, but even as an option(). I agree that smoothers are useful. . . . > I clearly support to add either vif or -- equivalent and more > intuitive to me -- R^2_j, the coefficient of determination of > lm(X_j~.) However > -- this should be included in the coefficient table of print.lm > -- this adds another useless and misleading quantity for > dummy x-variables It is therefore quite a different question. > Generalized variance inflation factors (as computed by the vif function in car) apply to sets of related regressors in a term, such as dummy regressors. . . . Regards, John ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
