[R] question about corStruct

From: Ing. Marek Brabec PhD <mbrabec_at_szu.cz>
Date: Mon 06 Feb 2006 - 22:58:32 EST

dear list,
I am wondering if one can find examples and/or more detailed descriptions of modifications needed when going beyond standard corStruct classes (i.e. those already provided for use in lme/nlme)? When I looked at pages 238-239 of Pinheiro/Bates (2000): Mixed-effects models in S and S-plus, I found that I would need a bit more explicit guidance what to do for implementing a new correlation structure than that presented there.
I am thinking e.g. of random walk as of a non-stationary example corStruct to implement.
Thanks for any help and/or pointing me to a source of general instructions. All the Best
Marek Brabec

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