search for: zipoisson

I have a question for users of MCMCglmm that have experience implementing the zero-inflated poisson model. I find that the documentation, and previous questions, do not offer a lot of clear guidance on specifying and interpreting the zipoisson model. In particular, I see a lot of zero-inflated poisson examples that use the at.level(trait, x):variableName syntax. Specifically, the MCMCglmm course notes, available on the package's CRAN page, uses the following example on page 102: m5d.1 <- MCMCglmm(art ~ trait - 1 + at.level(tra...

When I try to use the following code, I get the error message shown. This is quite confusing to me, insofar as family is a recognized argument for MCMCglmm. Can anyone spot an obvious glitch? model1 <-MCMCglmm(fixed = NoRRVpos ~ Year, random = ~County, family="zipoisson", data=Rabies_Project_Init)Error in MCMCglmm(fixed = NoRRVpos ~ Year, random = ~County, family = "zipoisson", : For error structures involving multinomial data with more than 2 categories, or zero-infalted/altered/hurdle modelsIn addition: Warning message:Unknown or uninitialised...

...ro-Altered Poisson Distribution zeta Riemann's Zeta Function zetaff Zeta Distribution Family Function zibinomial Zero-Inflated Binomial Distribution Family Function zipf Zipf Distribution Family Function zipoisson Zero-Inflated Poisson Distribution Family Function