[R] tutorial for lme

Federico Calboli f.calboli at ucl.ac.uk
Sat Apr 24 13:33:48 CEST 2004

> In particular, I have some difficulties to understand how
> for random effects and variance structures
> could be specified.

I had similar problems myself... until a reply from Douglas Bates to one
of my posts, wich clarified me how to specify the random effects. You
should be able to find it at:


(or search the R site using the keywords Calboli and Crawley, should be
the first hit). I am not an expert, but you are welcome to contact me
off list for any further clarifications I can offer (not many, do not
hold your breath).


Federico Calboli



Federico C. F. Calboli

Dipartimento di Biologia
Via Selmi 3
40126 Bologna

tel (+39) 051 209 4187
fax (+39) 051 209 4286

f.calboli at ucl.ac.uk

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