[R] Obtaining Estimates of the Random Effects Parameters

Rick Bilonick rab45+ at pitt.edu
Wed Dec 13 17:39:46 CET 2006


I'm running simulation using lme and sometimes the estimated
variance-covariance matrix is not positive definite so that the
intervals function won't work for the random effect coefficients. I've
tried varcomp from the ape package but this does not return all the
coefficients. How can I extract the random effect coefficients without
using intervals?

Rick B.



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