this may be a better question for r-devel, but ... Is there a particular reason (and if so, what is it) that the inverse link is not in the list of allowable link functions for the binomial family? I initially thought this might have something to do with the properties of canonical vs non-canonical link functions, but since other link functions (probit, cloglog, cauchit, log) are allowed, I can't think of any good reason. In fact, it's sort of a mystery to me why the sets of link functions for each family are restricted. Is this from painful experience that some link functions just don't work well?
I can go ahead and hack my own version that allows inverse
link, but it would be nice to know if I'm doing something dumb.
(The reason I want to do this is that the inverse link
linearizes the Michaelis-Menten function, y = a*x/(b+x) ...)
cheers
Ben Bolker
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