spm_LAP_iS.m
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			function [iS] = spm_LAP_iS(p,R)
			% default precision function for LAP models (hidden states)
			% FORMAT [iS] = spm_LAP_iS(p,R)
			%
			% p{1} - vector of precisions for causal states (v)
			% p{2} - vector of precisions for hidden states (v)
			% R - generalised precision matrix
			%
			% iS - precision matrix for generalised states (causal and then hidden)
			%__________________________________________________________________________
			% Copyright (C) 2008 Wellcome Trust Centre for Neuroimaging

			% Karl Friston
			% $Id: spm_LAP_iS.m 3694 2010-01-22 14:16:51Z karl $

			% precisions for generalised errors on causal (V) and hidden states (W)
			%==========================================================================
			V = kron(R,diag(exp(p.h)));
			W = kron(R,diag(exp(p.g)));
			iS = blkdiag(V,W);

iCAPs/packages/spm12/spm_LAP_iS.m31022b3a13e6master