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%% Find Bandwidth of Sparse Block Matrix %% % Create a 100-by-100 sparse block matrix. B = kron(speye(25),ones(4)); %% % View a 10-by-10 section of elements from the top left of |B|. full(B(1:10,1:10)) %% % |B| has 4-by-4 blocks of ones centered on the main diagonal. %% % Find both the lower and upper bandwidths of |B| by specifying two output % arguments. [lower,upper] = bandwidth(B)