Re: R-beta: Various R Questions and Comments

Peter Dalgaard BSA (p.dalgaard@biostat.ku.dk)
17 Feb 1998 10:13:03 +0100


To: Jim Lindsey <jlindsey@luc.ac.be>
Subject: Re: R-beta: Various R Questions and Comments
From: Peter Dalgaard BSA <p.dalgaard@biostat.ku.dk>
Date: 17 Feb 1998 10:13:03 +0100
In-Reply-To: Jim Lindsey's message of Tue, 17 Feb 1998 09:22:41 +0100 (MET)

Jim Lindsey <jlindsey@luc.ac.be> writes:

> 
> Offsets only are really useful if the link function is not the
> identity. Hence little use in lm. Jim

Agree and disagree.

Agr.: Just subtract on l.h.s.

Dis.: Consistency, expressing the right thing, etc.

The current situation where lm() accept y~x+offset(...) and treats it
as y~x is not sound, though.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907

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