[R] Multiple random effects inlme?

James Rogers jrogers at cantatapharm.com
Mon Sep 16 14:23:23 CEST 2002


Bob, 
You need to make use of pdBlocked and pdIdent. There is a simple example
in Bates and Pinheiro's book (Mixed Effects Models in S an S+). I don't
have the book in front of me to get the page number, but I remember it
is an example using data contributed by Dave Lansky. A related s-news
thread (which is probably sufficient to answer your question) is: 
http://www.biostat.wustl.edu/mailinglists/s-news/200112/msg00126.html
Best,
Jim 

James A. Rogers <rogers at cantatapharm.com>
Statistical Scientist
Cantata Pharmaceuticals 

> Date: Fri, 13 Sep 2002 15:17:24 +0300
> From: "Anon." <bob.ohara at helsinki.fi>
> Subject: [R] Multiple random effects inlme?
> 
> Moi!
> 
> I was helping to teach a course on mixed models this week, and we came
> across a problem with coding more than one random effect in lme when
> they aren't nested.


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