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2008 Nov 19
2
GAMM and anove.lme question
Greetings all The help file for GAMM in mgcv indicates that the log likelihood for a GAMM reported using summary(my.gamm$lme) (as an example) is not correct. However, in a past R-help post (included below), there is some indication that the likelihood ratio test in anova.lme(mygamm$lme, mygamm1$lme) is valid. How can I tell if anova.lme results are meaningful (are AIC, BIC, and logLik estimates accurate)? The data include hydroacoustic estimates of fish biomass (lbloat) in 1,000 meter long intervals (elementary sampling units) from multiple transects (each 20-30 km long, tranf) in...