[R] nested ANOVA with fixed and random variables missing data

Adam D. I. Kramer adik-rhelp at ilovebacon.org
Tue Sep 9 00:37:23 CEST 2008


On Mon, 8 Sep 2008, Lynise.Wearne at csiro.au wrote:

> I have a nested ANOVA, with a fixed factor "tmt" nested within "site"
> (random). There are missing values in the data set.
>
> aeucs, tmt and site have been defined as objects
>
> I have tried:
>
> model1=lme(aeucs~tmt,random=~1|tmt/site)

I think you want lme(aeucs~tmt,random=~tmt|site)

...as tmt is a fixed factor, you don't want to use it for grouping. Instead,
you want to estimate a separate tmt effect for each site...so estimate (~) a
fixed tmt effect (tmt) within (|) sites (site) = ~tmt|site.

--Adam

>
> I get the following error message
>
> Error in na.fail.default(list(aeucs = c(0.833333333, 1, 1, 1, 1, 1, 0.666666667,  :
>  missing values in object
>
> I need to know where I am going wrong.
>
>
> 	[[alternative HTML version deleted]]
>
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