Fixed effects only model with lme4
lmer requires a random effect's term so I doubt you can compare a lm object to a lmer object
On 6/6/09, Jeroen Ooms <jeroenooms at gmail.com> wrote:
2009/6/6 Douglas Bates <bates at stat.wisc.edu>
Try listing them the other way around anova(fm1, fm0) If the first model in the call to anova is of class "lm" then the method for that class is the one chosen and that method doesn't know about models created by lmer. You must list them so that the lmer model comes first.
this still returns an error:
fm0 <- lm(Reaction ~ Days, sleepstudy); fm1 <- lmer(Reaction ~ Days + (1|Subject), sleepstudy); anova(fm0,fm1);
Error in x$terms : $ operator not defined for this S4 class
anova(fm1,fm0);
Error in FUN(X[[1L]], ...) : no slot of name "call" for this object of class "lm" similar error if I use glm instead of lm. [[alternative HTML version deleted]]
_______________________________________________ R-sig-mixed-models at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-mixed-models