Thank you for your answers,

I have an exemple of that i was using:

m1a<-lmer(atpos~ninter+saison+milieu*zone+(1|code),family=neg.bin(0.429),method="Laplace",data=manu)
summary(m1a)
Generalized linear mixed model fit using Laplace 
Formula: atpos ~ ninter + saison + milieu * zone + (1 | code) 
   Data: manu 
 Family: Negative Binomial(log link)
   AIC   BIC logLik deviance
 125.1 147.6 -54.57    109.1

I think It was the version lme4 0.9975-10.
Unfortunately, I have this version no more available on my computer..
I wonder if this old results are still valid..


Ben Bolker wrote:
> 
> 
> 
> ROBARDET Emmanuelle wrote:
>> 
>> Dear R users,
>> I'm performing some GLMMs analysis with a negative binomial link.
>> I already performed such analysis some months ago with the lmer()
>> function but when I tried it today I encountered this problem:
>> Erreur dans famType(glmFit$family) : unknown GLM family: 'Negative
>> Binomial'
>> 
>> Does anyone know if the negative binomial family has been removed from
>> this function?
>> I really appreciate any response.
>> Emmanuelle
>> 
>> 
> 
> I would be extremely surprised if this worked in the past; to
> the best of my knowledge the negative binomial family has
> never been implemented in lmer.  One could in principle
> do a glmmPQL fit with the negative binomial family
> (with a fixed value of the overdispersion parameter).
> glmmADMB is another option.
> Can you say which version etc. you were using???
> 
> Follow-ups should probably be sent to r-sig-mixed-mod...@r-project.org
> ....
> 

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