Hi Deborah, A very good source for hands-on information on mixed models in S is: "Mixed-effects models in S and S-PLUS" by Pinheiro and Bates
Incidentally, it's available in your university's library http://toroprod.library.utoronto.ca/uhtbin/cgisirsi/2XfWcMI0Ns/ROBARTS/140640080/2/1000 I believe the book does not explicitly cover the lme4 package (lmer is part if this package) but the principles can be easily applied to your needs. Regards, Francisco [EMAIL PROTECTED] wrote: > Dear R-Pros, > I have count data in which 6-10 points are nested within 17 larger units > (which are nested within 3 larger-still units) plus a number of > covariates. It could be nested ANCOVA but for poisson family. Could > someone kindly advise me 1) if lmer is the correct function for the > analysis? and 2) what synax expresses the error structure? I have > consulted the package HTML documentation but am not experienced enough to > get it. > Many thanks, > Deborah > > ______________________________________________ > R-help@stat.math.ethz.ch 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. > -- Dr. Francisco J. Zagmutt College of Veterinary Medicine and Biomedical Sciences Colorado State University ______________________________________________ R-help@stat.math.ethz.ch 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.
