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quine
2010 Mar 03
1
Zero inflated negative binomial
Hi all,
I am running the following model:
> glm89.nb <- glm.nb(AvGUD ~ Year*Trt*Micro)
where Year has 3 levels, Trt has 2 levels and Micro has 3 levels.
However when I run it has a zero inflated negative binomial (as I have lots
of zeros) I get the below error message:
> Zinb <- zeroinfl(AvGUD ~ Year*Trt*Micro |1, data = AvGUD89, dist =
"negbin")
Error in optim(fn =