[R] Comparing GAM objects using ANOVA

Fabien.Fivaz@ie-zea.unil.ch Fabien.Fivaz at ie-zea.unil.ch
Wed Nov 13 15:03:29 CET 2002


Is it possible to compare two GAM objects created with the gam() function from the mgcv package. I use a slightly modified version of anova.glm() named anova.gam(), modified from John Fox (2002). It often gives me some aberant responses, especially with "F" test. I use a quasibinomial model and scale (dispersion) is calculated and used in the calculation of the F value. Does someone already tried this or does someone knows if all this is theoretically possible ?

Best wishes,

Fabien Fivaz

Fabien Fivaz
Centre Suisse de Cartographie de la Faune (CSCF)
Terreaux 14
2000 Neuchâtel
- Switzerland-
E-mail: fabien.fivaz at ie-zea.unil.ch 

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