[R] Help with problem - multilevel model?

[Doran, Harold]

Aov is not the right function for this problem. Lmer is designed for
multilevel modeling. There are a lot of resources, but start with the
following vignette

Library(lme4)
vignette("MlmRevSoft")

And then turn to Pinhiero and Bates

> -----Original Message-----
> From: r-help-bounces at stat.math.ethz.ch 
> [mailto:r-help-bounces at stat.math.ethz.ch] On Behalf Of 
> Richard M. Heiberger
> Sent: Thursday, January 18, 2007 10:22 AM
> To: Crabb, David; r-help at stat.math.ethz.ch
> Subject: Re: [R] Help with problem - multilevel model?
> 
> This should get you started
> 
> 
> tmp <- data.frame(y1=rnorm(62*5),
>                   y2=rnorm(62*5),
>                   time=rep(1:5, 62),
>                   id=factor(rep(1:62, each=5))
>                   )
> 
> xyplot(y1 ~ y2 | id, data=tmp, group=time, pch=as.character(1:5))
> 
> tmp.aov <- aov(y1 ~ y2*factor(time) + Error(id), data=tmp)
> summary(tmp.aov)
> 
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