[R] Variance components from lm?

[Liaw, Andy]

> From: Spencer Graves
> 
> 	  Under normal circumstances, 'RSiteSearch("variance 
> components")' 
> would likely identify "lme" in package nlme and lmer in 
> package lme4.  I 
> recommend lme, as it comes with a fairly complete set of helper 
> functions described in Pinheiro and Bates (2000) Mixed-Effect 
> Models in 
> S and S-Plus (Springer).  "lmer" is Doug Bates' next 
> generation product 
> currently under development and lacking some of the helper functions 
> available with lme.
> 
> 	  spencer graves
> p.s.  I said, "Under normal circumstances", because when I tried 
> RSiteSearch just now, it didn't work.  When I went to 
> "www.r-project.org" -> Search -> "R site search", I got "Computer 
> trouble, July 13, 2005".  When it works (which is 99.7% of 
> the time), it 
> is my favorite tool for finding things about R for which I 
> don't already 
> know where to look.

The server (graciously created and maintained by Prof. Jonathan Baron)
crashed and a hard drive failure.  I was told it would likely be
back online next Monday.

I missed this search engine, too, as I've grown to depend on it quite
a bit.

Cheers,
Andy
 
> Steve Ellison wrote:
> 
> > I often use simple nested random-effect models for 
> interlaboratory data.
> > The variance components are important things to know.
> > 
> > Is there an R function or package that gets variance 
> components from lm
> > objects? Or can someone point me to a method of doing so?
> > 
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> -- 
> Spencer 
> Graves, PhD
> Senior Development Engineer
> PDF Solutions, Inc.
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> 
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