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
Unstructured Covariance Structure for lmer()
2 messages · Claire Campbell, Ben Bolker
"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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