[R] covariates in nlmer function

[Douglas Bates]

On 9/14/07, Kari Ruohonen <kari.ruohonen at utu.fi> wrote:
> I am trying to explore nlmer by running some nlme examples from Pinheiro
> & Bates (2000). I do not seem to find information how to specify fixed
> effects covariates to nlmer models. Specifically, I tried to run the
> "Carbon Dioxide Uptake" example from p. 368 onwards in the PB200 book.
> The model without fixed effects covariates runs well but how to tell
> nlmer to include Type and Treatment similar to the nlme model on p. 374
> in the PB2000 book? Or is this something that has not been implemented
> yet?

To tell you the truth, I'm not sure.

I have been preparing classes and attending so many oral exams
recently that I can't remember exactly what capabilities are available
in nlmer right now.  I'll reply more definitively next week when I get
a chance to catch my breath a bit.