[19203] in s-news-athena
[S] RE: Defining contrasts in factors
daemon@ATHENA.MIT.EDU (Pierre Delfosse)
Mon Sep 13 11:48:43 1999
Message-Id: <C1B1A78EB953D211902D0040056AC48B0451B5@VRVCOM>
From: Pierre Delfosse <pierre.delfosse@centexbel.be>
To: s-news@wubios.wustl.edu
Date: Mon, 13 Sep 1999 16:11:12 +0200
Mime-Version: 1.0
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I have sent my question about an hour ago and meanwhile found a detailed
answer by Bill Venables (29 March 1997).
I apologize for not having read the archives thoroughly first. However,
I am still wondering why there is no equivalent of the comments by B.V.
in the S+ documentation !
> -----Original Message-----
> From: Pierre Delfosse
> Sent: lundi 13 septembre 1999 14:08
> To: 's-news@wubios.wustl.edu'
> Subject: Defining contrasts in factors
>
> Dear S+ users,
>
> I would like to understand how the dummy coefficients associated to a
> factor are computed in "lm" in function of the values of the matrix of
> contrasts.
>
[Pierre Delfosse] ...
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