[R] lmer() and "$ operator is invalid for atomic vectors"

Hi all, I am a bit mystified by this error message that I get when I try to apply lmer() to a simple dataset with one between factor (age) and one within factor (item): "$ operator is invalid for atomic vectors" I'll just provide the code, because I don't see where the problem is: library(lme

Re: [R] lmer() and "$ operator is invalid for atomic vectors"

org Onderwerp: [R] lmer() and "$ operator is invalid for atomic vectors" Hi all, I am a bit mystified by this error message that I get when I try to apply lmer() to a simple dataset with one between factor (age) and one within factor (item): "$ operator is invalid for atomic vectors&q