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using transform.poly for multifactorial polynomial regression-solution

To: s-news@wubios.wustl.edu
Subject: using transform.poly for multifactorial polynomial regression-solution
From: Andrew Czarn <aczarn@csse.uwa.edu.au>
Date: Fri, 25 Oct 2002 17:38:00 +0800 (WST)
Cc: dmck@u.washington.edu
In-reply-to: <Pine.LNX.4.44.0210231842010.5411-100000@server02>
the solution to my recently posted question can be found from the 
following URLs:

http://www.biostat.harvard.edu/~cwager/eeb99/node4.html

http://www.biostat.wustl.edu/mailinglists/s-news/200001/msg00189.html

in my case it necessitated using "c" to extract the necessary 
coefficients including the intercept, viz:

*****************************************************************************
print(poly.transform(poly(muValuePooledON,2),coef(tempPooled2.lm)[c(1,3,4)]))
      x^0       x^1      x^2
 124.3585 -1294.637 9419.399
*****************************************************************************

hope this helps anyone else

andrew

Dr AST Czarn






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