[R] crossed random fx nlme lme4

From: Emilio A. Laca <ealaca_at_ucdavis.edu>
Date: Thu 14 Jul 2005 - 09:35:02 EST


I need to specify a model similar to this

lme.formula(fixed = sqrt(lbPerAc) ~ y + season + y:season, data = cy,

     random = ~y | observer/set, correlation = corARMA(q = 6))

except that observer and set are actually crossed instead of nested.

observer and set are factors
y and lbPerAc are numeric

If you know how to do it or have suggestions for reading I will be grateful.

eal

ps I have already read Pinheiro & Bates, the jan 05 newsletter, and several postings.



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