Hi, I believe we could extend our upcoming release of our freely available AD Model Builder negative binomial mixed model
http://otter-rsch.com/admbre/admbre.html packaqge for R to include your model. Writing the model is simple, it is the interface with R that is a bit more difficult. If you contact me privately I will take a look at it. Cheers, Dave -- David A. Fournier P.O. Box 2040, Sidney, B.C. V8l 3s3 Canada http://otter-rsch.com -- ______________________________________________ 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