[R] Help with lme4 model specification

boeinguy2 boeinguy2 at yahoo.com
Thu May 7 17:42:42 CEST 2009

Thanks for your response.

>This is suspicious : Spar_loc doesn't appear in your statement...

Yes Spar_loc should look suspicious.  I posted the real error messages but
hid the variable names in the model.  Spar_loc is the original form of S.

>The precedence of modelling operators is not very clear (and does not
>seem to be formally defined in the "standard" documentation...). In
>doubt, use parentheses.

>So try ...+(1|(S:A)/H), just in case..

This did not work.  However I did discover something that does:

AAT<- lmer(Y ~ S + A + (1|H %in% S:A), data=AT, REML=TRUE) 

Not sure why this worked.  I read that it is an alternate way of specifying

This runs without error.

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