Brandon Dey
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Brandon Dey
reMatrix is a list of arrays containing the covariance matrices over each of the 23 levels of the grouping variable. It's not just having more than one term because this...
Ah! It's because my intercepts and slopes are uncorrelated. Should have just read the docs more carefully! This fails with the same error after uncorrelating: set.seed(271828) data(sleepstudy) sleepstudy$another_var = rnorm(nrow(sleepstudy),...