[R] Greetings. I have a question with mixed beta regression model in nlme.

Ben Bolker bbolker at gmail.com
Mon Jan 3 21:01:33 CET 2011

elciclopeturnio <elciclopeturnio <at> gmail.com> writes:

> *Dear R-help:
> My name is Rodrigo and I have a question with nlme package
> in R to fit a mixed beta regression model. The details of the model are:


> *The question is:
> How can I use nlme package in R to fit this model?
> If you want to know additional information, send me a mail, please.

  nlme only fits models with normally distributed residual error (and
normally distributed random effects).  lmer (in the lme4) package fits
models with exponential-family individual effects (i.e. GLMMs), but
that doesn't include beta 

  I don't know offhand of any package in R proper that will fit this model,
although you could try Jim Lindsey's 'repeated' package
<http://popgen.unimaas.nl/~jlindsey/rcode.html> or one of the HGLM
packages.  There are R interfaces to WinBUGS and AD Model Builder 
(possibly among others).

  good luck
    Ben Bolker

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