Have you reviewed Pinheiro and Bates (2000) Mixed-Effects Models in S and S-PLUS (Springer)? They provide examples with diagnostic plots, confidence intervals and likelihood ratio tests in sec. 5.3, for example.

           spencer graves

Revilla,AJ (pgt) wrote:

Dear all,

I am fitting a nonlinear mixed-effects model
from a balanced panel of data using nlme. I would
like to know whay would be the best options for
formally testing for autocorrelation. Is it
possible to carry out a Durbin-Watson test on a
nlme object? As far as I've seen, I think the
durbin.watson function from the car package just
works on lm objects.

Thank you very much,

Antonio

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