Unstructured Covariance Structure for lmer()
"Unstructured" (aka 'general positive (semi)definite') covariance matrices are the *only* option in lme4. If you give a little bit more detail/context about what you want to do, we may be able to help you better.
On 2023-12-22 3:00 p.m., Claire Campbell wrote:
Hi - I was wondering how to implement an unstructured covariance structure in lmer(), is there code for that? Thank you! -- Claire Campbell Neuroscience PhD Candidate F31 NRSA Predoctoral Fellow Herting Neuroimaging Lab USC Keck School of Medicine Department of Population and Public Health Sciences Los Angeles, CA, USA [[alternative HTML version deleted]]
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