Thank you all for your input and help with this model.  I tried to use the cplm package at Ben's suggestion, and was able to complete the model, however I received the following warning:

glm.fit: algorithm did not converge

Does anyone have any suggestions on how to address this?  My data is fairly simple, a distance measurement for each of several trap types on different dates.

Also, I was trying to produce a summary of the model, however I cannot get the commands to work.  I tried summary(model) which returned:

Error in UseMethod("fixef") :
  no applicable method for 'fixef' applied to an object of class "c('cpglmm', 'mer', 'cplm')"

>From reading through the literature on the "cplm" package, it suggests:

summary signature(object = "cpglm")

This may be a dumb question, but how do I write that into R to give me a summary of the model?

Again, thank you for the help.

Bryan

______________________
Bryan Danson
Biological Scientist I
Fish and Wildlife Research Institute
Florida Fish and Wildlife Conservation Commission

"The significant problems we have cannot be solved at the same level of thinking with which we created them."
~Albert Einstein




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