[R] Tukey and extracting letters in multcomp

Hi Lauren, Did you ever receive an answer on this? I’ve been having the same errors, and am stumped, so I’d love to hear how you sorted this out with your models. Thanks for your help! Cheers, Rachel -- Rachel Smith PhD Candidate Odum School of Ecology University of Georgia Athens, GA 30602

[R] Tukey and extracting letters in multcomp

Hello, I have the following model: model <- lmer (Y ~ gen + (1|env) + (1|gen:env)) I would like to use Tukey's method to identify significant pairwise differences among levels of the factor gen, which has 18 levels. (Env has 3 levels.) I have been trying to do this using glht and cld in t