[R] lm Help!!
Peter Dalgaard BSA
p.dalgaard at biostat.ku.dk
Wed Apr 12 11:52:53 CEST 2000
Bill Venables <venables at acland.qld.cmis.csiro.au> writes:
> As you will see, you can check the result using
> fm <- lm(y ~ .....)
> drop1(fm, . ~ .)
> but that's an even longer story.
> Warning: with factors, use Helmert, sum or poly contrasts, NOT
*cough*! Why? I get exactly the same results from drop1 whether I use
treatment or Helmert contrasts, as far as I can see.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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