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2003 Jun 03
0
GLM(...,start,...) question
I am trying to use the glm.nb proceedure in the new MASS library. I have
count data (of snails) taken from a number of habitats (artesian springs).
I want to model the abundances, including an effect of the organic content
of the sediment. When I try to fit a model like:
nb.model.p <- glm.nb(abundance~Organics.per.wt)
I get the error message:
Error: no valid set of coefficients has been found:please supply starting
values
I l...