Re: R-beta: Various R Questions and Comments

Jim Lindsey (jlindsey@luc.ac.be)
Tue, 17 Feb 1998 10:22:46 +0100 (MET)


From: Jim Lindsey <jlindsey@luc.ac.be>
Message-Id: <9802170922.AA24374@alpha.luc.ac.be>
Subject: Re: R-beta: Various R Questions and Comments
To: p.dalgaard@biostat.ku.dk (Peter Dalgaard BSA)
Date: Tue, 17 Feb 1998 10:22:46 +0100 (MET)
In-Reply-To: <x2d8gmoaqo.fsf@blueberry.kubism.ku.dk> from "Peter Dalgaard BSA" at Feb 17, 98 10:13:03 am



> 
> 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.

Agree.

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

> -- 
>    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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