Folks:
Lme() is only able to work with nested random effects, not with crossed random effects. Not quite true. Crossed models **can** be done, albeit clumsily, via pdMatrix objects: the Bates/Pinheiro book even contains an example or two (one on assay plates, I recall, but I don't have my book with me for the reference). Also, lme, not lmer, is currently the only way to implement penalized splines as random effects -- see the lmeSplines package. -- Bert Gunter ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
