GAM quasipoisson in MuMIn

Hi,

<snip />

My formula is

GAM<-gam(Species richness (count) ~ Categorical +  Continous + Continous + *
s*(Continous ) + Continous : Continous + Continous : Continous,
family=quasipoisson, data =)

Ok, I'm reasonably certain that that is *not* your gam() call. Why not
post the *actual* code you would enter for your GAM model?

dd <- dredge(GAM)

should evaluate all possible models from the global model you specified.
The example you quote is for a global model with both smooth and linear
terms for the same variables, hence in dredge() they need to select
models that include only the smooth for a particular variable or the
linear term for that variable, but not both.

By the looks of it, you don't have this problem.

G

Thanks for any advice on script


Karen

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