[R] mcmc sampling and glmer

Hi everybody, Trying to test for the effect of fixed factors in a generalized linear mixed model, I face the problem of mcmc not yet implemented with such models. I would like to know if there is any equivalent procedure to that applied on lme ( lmer followed with mcmc sampling and

[R] lmer: random factor nested in a fixed factor

Hi all, I try to build a model using lmer, with 2 crossed fixed factors (poptype and matingtype) and 2 random factors (pop and family) which I want to nest within poptype. Which of these formulae should I use ? 1. lmer(y~poptype*matingtype + (1|poptype/pop/fam)) 2. lmer(y~poptype*matingtype +