Dear all,<div><br></div><div>I am using a Wishart distribution as prior for the precision matrix (R) of a multivariate normal distribution. Then I&#39;m obtaining the covariance matrix (Omega) as Omega = inverse(R)</div><div>
I would use in my model the first element of the Omega matrix (Omega[1,1]), but I get this error : </div><div>&quot;unable to choose updater for node R[1,1]&quot; .</div><div>So I can not have Omega[1,1].</div><div>Is it possible to access at an element of a matrix in WinBUGS or should I write the model in a different way?</div>
<div><br></div><div>Giovanni Smania</div>
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