Re: [R] lm.influence in multivariate linear model

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From: Martin Maechler (maechler@stat.math.ethz.ch)
Date: Fri 28 Jun 2002 - 17:25:24 EST 

Message-id: <15644.3940.620118.126108@gargle.gargle.HOWL>

>>>>> "Daniel" == Daniel Mastropietro <mastropi@uwalumni.com> writes:

    Daniel> I have fitted a multivariate linear model using lm()
    Daniel> but then I cannot apply any function available for
    Daniel> diagnostics, such as lm.influence(), rstudent()
    Daniel> etc. I get the following error message when calling
    Daniel> any of the above functions.

    Daniel> "Error in lm.influence(model1) : non-NA residual
    Daniel> length does not match cases used in fitting"

            ....

    Daniel> The command for the fit is simply lm(y ~ x)
    Daniel> which runs properly.

    Daniel> Are the diagnostic measures only available for
    Daniel> univariate linear models?

currently, yes.
Improvements to the code (and docu) are very welcome!
R is an open & volunteer project.

Regards,

Martin Maechler <maechler@stat.math.ethz.ch> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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