www.gusucode.com > mbcmodels 工具箱 matlab 源码程序 > mbcmodels/@xregtwostage/cov.m

    function G= cov(TS)
%COV

%  Copyright 2000-2005 The MathWorks, Inc. and Ford Global Technologies, Inc.



if ~builtin('isempty',TS.covmodel)
    G= unstruct(TS.covmodel);
    if ~all(TS.RandomEffects)
        F= EffectsMatrix(TS);
        G= F*G*F';
    end
else
    G=[];
end