[R-sig-ME] Another MCMCglmm question - fixing correlations

Szymek Drobniak geralttee at gmail.com
Tue Nov 30 23:19:20 CET 2010


is it possible in MCMglmm to fix the (co)variance matrix so that the
resulting variances could vary, but covariances had always the value
ensuring that r=1? It would be useful in testing cross-sex rG where
the H0 should be rG=1 rather than rG=0 (as defined in idh()). I looked
through available (co)variance structures but none seems suitable.


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