fixing covariances to 0 in MCMCglmm
Hi Celine, Sorry, this is still not available. Given that there is no information in the data to estimate the covariances you want to set to zero, I wonder whether there is anything wrong with just having a fully unstructured matrix and then ignoring the covariances? The information for those covariances will come solely from the prior, but I would expect that the posteriors for those (co)variances that can be estimated would remain valid. It may reduce mixing, but would be one solution. Cheers, Jarrod Quoting Celine Teplitsky <teplitsky at mnhn.fr> on Wed, 30 Jan 2013 19:09:57 +0100:
Dear all, I would like to run an animal model in MCMCglmm with 3 traits, 2 male traits and one female trait, but I do not know how to fix the covariances between sexes for Vpe and Vr to 0. From what I understood from an earlier post by Jarrod, it was not possible 2 years ago, but any chance it is now? Many thanks in advance for help, All the best Celine -- Celine Teplitsky D?partement Ecologie et Gestion de la Biodiversit? UMR 7204 Unit? Conservation des Esp?ces, Restauration et Suivi des Populations Case Postale 51 55 rue Buffon 75005 Paris Webpage :http://www2.mnhn.fr/cersp/spip.php?rubrique96 Fax : (33-1)-4079-3835 Phone: (33-1)-4079-3443
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