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...tweedie family of distributions could be used to fit a model with random effects. Upon installing the tweedie package and attempting to fit the following model: lmer(SUS ~ 1 + (1| GRP),REML=FALSE,data=mydata,family=tweedie(var.power=1.55,link.power=0)) I get the following error: Error in famType(glmFit$family) : unknown GLM family: ?Tweedie? If it helps, im on a mac with R V 2.9.1, lme4 V.0.999375-31, Tweedie V2.0. Thanks, Mohammad AlMarzouq

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 [[alternative HTML version deleted]]

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 [[alternative HTML version deleted]]

...(mapos~ninter+saison+milieu*zone+(1|code),family=neg.bin(0.451),REML=TRUE,data=manu) But now (R version 2.9.2 and lme4 version 0.999375-32), that gives (even with the library MASS loaded): m1a<-lmer(mapos~ninter+saison+milieu*zone+(1|code),family=neg.bin(0.451),REML=TRUE,data=manu) Error in famType(glmFit$family) : unknown GLM family: 'Negative Binomial' Any idea about what happens ? Patrick [[alternative HTML version deleted]]

...t; 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. >> >> Emma...

...t;) structure(list(linkfun = linkfun, linkinv = linkinv, mu.eta = mu.eta, valideta = valideta, name = link), class = "link-glm") } lmer(Correct~-1+cNoise*f_Pos+f_Shape_con+f_Shape_con:f_Pos+(-1+cNoise*f_Pos|f_Subject), data=dens_data, family=binomial(mafc.logit(2))) Error in famType(glmFit$family) : unknown link: 'mafc.logit(2)' 3) The link function does work with glm so the problem is in lmer, I guess, not in the newly defined link function. Unfortunately I would like to model random effect, so I prefer to use the lmer function. 4) I've also tried with other ve...