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package nlme: covariates and self-starting nonlinear regression

3 messages · Dr. Peter Schlattmann, Kjetil Halvorsen, Douglas Bates

Original
Dr. Peter Schlattmann
# 
Dear all,

I want to include covariates into the self-starting linear regression
functions
SSbiexp and SSfol. Is there a way to do this or do I need to define my
own functions
depending on the covariates?

My second question concerns the function nlme:
Is it possible to use this functions for fixed effects only?



Thanks a lot for your help
Best regards 
Peter

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Kjetil Halvorsen
# 
Hola!

For the last Q: For fixed effects only, see the functions
gls  and gnls.

Kjetil Halvorsen
Peter Schlattmann wrote:
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1 day later
Douglas Bates
# 
kjetil halvorsen <kjetilh at umsanet.edu.bo> writes:
Perhaps nls too.
^^^^^^ nonlinear?
Can you give us an example of what you mean by "include covariates"?