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    %% Uncertain Complex Matrix and Weighting Matrices 
% Create a 4-by-3 uncertain complex matrix (|ucomplexm|), and view its
% properties. The simplest construction requires only a name and nominal value.
%%
m = ucomplexm('m',[1 2 3; 4 5 6; 7 8 9; 10 11 12])
%%
get(m)
%%
% The nominal value is the matrix you supply to |ucomplexm|.
mnom = m.NominalValue
%%
% By default, the weighting matrices are the identity.  For example,
% examine the left weighting.
m.WL
%%
% Sample the uncertain matrix, and compare to the nominal value. Note the
% element-by-element sizes of the difference are roughly equal,
% indicative of the identity weighting matrices.
msamp = usample(m);
diff = abs(msamp-mnom) 
%%
% Change the left and right weighting matrices, making the uncertainty
% larger as you move down the rows, and across the columns.
m.WL = diag([0.2 0.4 0.8 1.6]); 
m.WR = diag([0.1 1 4]);
%%
% Sample the uncertain matrix again, and compare to the nominal value. Note
% the element-by-element sizes of the difference, and the general trend
% that the smallest differences are near the (1,1) element, and the largest
% differences are near the (4,3) element, consistent with the trend in the 
% diagonal weighting matrices.
msamp = usample(m);
diff = abs(msamp-mnom)