[R] kronecker product in mixed model

From: Suyan Tian <stian_at_mail.rockefeller.edu>
Date: Mon, 25 Feb 2008 11:52:38 -0500

Hi, does anyone know how to self-define the variance-covariance structure of the within-subject variance for the mixed models , i.g,


For ei I want to use kronecker product so its variance matrix will be R=V*E, here * represents Kronecker product.

Thanks so many.

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