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%% Adjust Base Value of Area Graph % By default, |area| uses the _y_-axis as the base value. Change the base % value by setting the |basevalue| input argument to -4. % Copyright 2015 The MathWorks, Inc. Y = [1, 5, 3; 3, 2, 7; 1, 5, 3; 2, 6, 1]; figure basevalue = -4; area(Y,basevalue)