[R] regression diagnostics [Re: two new packages]

Martin Maechler maechler at stat.math.ethz.ch
Sat Apr 28 15:00:39 CEST 2001

>>>>> "John" == John Fox <jfox at mcmaster.ca> writes:

    John> I've prepared preliminary versions of two packages that I plan
    John> eventually to contribute to CRAN:

    John> car (for "Companion to Applied Regression") is a package that
    John> provides a variety of functions in support of linear and
    John> generalized linear models, including regression diagnostics
    John> (e.g., studentized residuals, hat-values, Cook's distances,
    John> dfbeta, dfbetas, 

the above are all already in standard R!
Did you look at ?influence.measures  and the functions
mentioned on that help page?

I believe these are all correct for glm objects (which inherit from "lm"),
as well.  Otherwise, we'd rather like to see bug reports!


    John> I'm particularly interested in suggestions and comments.

Martin Maechler <maechler at stat.math.ethz.ch>	http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum  LEO D10	Leonhardstr. 27
ETH (Federal Inst. Technology)	8092 Zurich	SWITZERLAND
phone: x-41-1-632-3408		fax: ...-1228			<><
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