[R-sig-ME] Patterned Variance-Covariance matrices for the random effect

[Tahira Jamil]

Hi everyone
I am wondering How can I assign special patteren / form e.g. compound symmetry structure , block diagonal etc to variance-covariace matrices to mer calss.
As in nlme library we have pdMat classes to specify patterened variance-covariance matrices for the random effects.
Hope to have some help from group members.

Tahira 
Ph.D student Biometrics 
Wageningen University Wageningen