[R] fitted values in LMER for the fixed-effects only

[Dieter Menne]

On 9/28/07, Anouk Simard <Anouk.Simard <at> bio.ulaval.ca> wrote:

> > I would like to extract the fitted values from a model using LMER but
> > only for the fix portion of the model and not for the fix and random
> > portion (e.g it is the procedure outpm or outp in SAS).
..
Quoting Douglas Bates <bates <at> stat.wisc.edu>

> > The calculation of the level = 0 fitted values in the new
> > representation of the fitted model is quite easy. It is
> >
> > fm1 at X %*% fixef(fm1)"
> >

Douglas Bates replied 

> Yes.

Mmm.. If I consider a few hundreds of messages in this list on the subject, 
it's considered dirty to use the fm1 at X or fm1$X construct. So should we 
expect that this is final (no longer fitted(), augPred etc), or is it work 
in prooogresssssssss?

Dieter