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

[Marie-Agnes Coutellec]

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 + (poptype|/pop/fam))

thanks in advance
Agnes

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Marie-Agnès Coutellec
UMR INRA-Agrocampus Ouest 985 ESE
Equipe Ecotoxicologie et Qualité des Milieux Aquatiques
65 rue de Saint-Brieuc - CS 84215
35042 Rennes cedex - FRANCE

tél.: +33(0)2 23 48 52 48
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