Hello: I am really stuck on this problem. Why do I get an error message with anova() when I compare these two equations?
Hope someone can help. ANDREW ____________________________ > fm1 <- glmmPQL(choice ~ day + stereotypy, + random = ~ 1 | bear, data = learning, family = binomial) > fm2 <- glmmPQL(choice ~ day + envir + stereotypy, + random = ~ 1 | bear, data = learning, family = binomial) > anova(fm1, fm2) Error in anova.lme(fm1, fm2) : Objects must inherit from classes "gls", "gnls" "lm","lmList", "lme","nlme","nlsList", or "nls" > anova(fm1) numDF denDF F-value p-value (Intercept) 1 2032 7.95709 0.0048 day 1 2032 213.98391 <.0001 stereotypy 1 2032 0.42810 0.5130 > anova(fm2) numDF denDF F-value p-value (Intercept) 1 2031 5.70343 0.0170 day 1 2031 213.21673 <.0001 envir 1 2031 12.50388 0.0004 stereotypy 1 2031 0.27256 0.6017 -- Andrew R. Criswell, Ph.D. Graduate School, Bangkok University mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html