Dear all, I am using R version 3.1.3. I want to run this model: m1<-glmer(hours~soil*volatile+(1|replicate), data=data, family=Gamma(link = "inv")) But I got this: Erreur within make.link(link) : 'inv' link not recognised What to do in this case? THANK YOU for help! Xavier PhD candidate Biology UNINE, Switzerlnad