Check out the pscl package. http://cran.r-project.org/web/packages/pscl/index.html
I haven't used it, but students in my class have. Barney Luttbeg On Wed, Sep 16, 2009 at 11:55 AM, James Hodson <james.hodso...@ulaval.ca>wrote: > Dear all, > > I've been searching for a while now for a package in R that can perform > mixed-model zero-inflated negative binomial regression. I am looking to > analyze pellet count data at the individual plot level, while accounting > for the fact that pellet plots are nested within sites and thus are not > strictly independent observations. I have a lot of zero counts, which is > why I'm interested in a zero-inflated model. I have tried the package > glmmADMB, but I have had no success in getting it to work with my data. > Any advice would be welcome. > > Thanks, > > James Hodson > james.hodso...@ulaval.ca >