R help - Jan 2008 - Repeated Measures/Split-Plot Anova

Hi,

    My name is Dan Ott and I recently learned R mainly for the purposing
of running ANOVA's and linear regression.  I just started using a data
set where I want to run a repeated measures anova as well as a
split-plot anova.  My question is:  What is the syntax for repeated
measures and split-plot anova's?

I did a little searching online and it appears that aov might be used for
a repeated measures anova, opposed to lm.  Is this code correct?

Thanks,
Dan Ott

Dan Ott <ott <at> unbc.ca> writes:
>     My name is Dan Ott and I recently learned R mainly for the purposing
> of running ANOVA's and linear regression.  I just started using a data
> set where I want to run a repeated measures anova as well as a
> split-plot anova.  My question is:  What is the syntax for repeated
> measures and split-plot anova's?
> 
> I did a little searching online and it appears that aov might be used for
> a repeated measures anova, opposed to lm.  Is this code correct?
> 
It's possible with aov, using lme in package nlme might be a much better
choice.
The book by Pinheiro/Bates coming with it is a must have. Just don't expect
to
see word "repeated measures" in it, but be assured that the
mixed-model concept
is MUCH more user friendly.

Dieter