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%% Compute the Extreme Value Distribution pdf % %% % Compute the pdf of an extreme value distribution. % Copyright 2015 The MathWorks, Inc. t = [-5:.01:2]; y = evpdf(t); %% % Plot the pdf. figure; plot(t,y) %% % The extreme value distribution is skewed to the left, and its general % shape remains the same for all parameter values. The location parameter, % |mu|, shifts the distribution along the real line, and the scale % parameter, |sigma|, expands or contracts the distribution. %% % The following plots the probability function for different combinations % of |mu| and |sigma|. x = -15:.01:5; plot(x,evpdf(x,2,1),'-', ... x,evpdf(x,0,2),':', ... x,evpdf(x,-2,4),'-.'); legend({'mu = 2, sigma = 1', ... 'mu = 0, sigma = 2', ... 'mu = -2, sigma = 4'}, ... 'Location','NW') xlabel('x') ylabel('f(x|mu,sigma)')