Hello, Is there a library that can be used to implement two-part models for data with 'extra' zeros? I am already aware of some of the zero-inflated poisson functions out there and of the negative binomial glm option. Thanks.
Richard -- Richard Chandler Department of Natural Resources Conservation UMass Amherst (413)545-1237 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
