The help page for lm says:
"If ‘response’ is a matrix a linear model is fitted separately by
least-squares to each column of the matrix."
-Ista
On Sun, Nov 29, 2009 at 11:46 AM, Carl Witthoft <c...@witthoft.com> wrote:
> Hi,
> A recent thread provided a (working) construct for lm:
>
> lm(as.matrix(freeny[ix]) ~., freeny[-ix])
>
>
> Can someone explain what is meant by the formula in that expression,
> that is, what does "mymatrix~." do? I couldn't find any such example in
> the lm() or formula() help pages.
>
> thanks
> Carl
>
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--
Ista Zahn
Graduate student
University of Rochester
Department of Clinical and Social Psychology
http://yourpsyche.org
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