www.gusucode.com > graphics 案例源码程序 matlab代码 > graphics/OffsetPieSliceWithGreatestContributionExample.m
%% Offset Pie Slice with Greatest Contribution % This example shows how to create a pie graph and automatically offset the % pie slice with the greatest contribution. % % Set up a three-column array, |X|, so that each column contains yearly sales % data for a specific product over a 5-year period. % Copyright 2015 The MathWorks, Inc. X = [19.3, 22.1, 51.6 34.2, 70.3, 82.4 61.4, 82.9, 90.8 50.5, 54.9, 59.1 29.4, 36.3, 47.0]; %% % Calculate the total sales for each product over the 5-year period by % taking the sum of each column. Store the results in % |product_totals|. product_totals = sum(X); %% % Use the |max| function to find the largest element in |product_totals| and % return the index of this element, |ind|. [c,ind] = max(product_totals); %% % Use the |pie| function input argument, |explode|, to offset a pie slice. % The |explode| argument is a vector of zero and nonzero values where the % nonzero values indicate the slices to offset. Initialize |explode| as a % three-element vector of zeros. explode = zeros(1,3); %% % Use the index of the maximum element in |product_totals| to set the corresponding |explode| % element to 1. explode(ind) = 1; %% % Create a pie chart of the sales totals for each product and offset the % pie slice for the product with the largest total sales. figure pie(product_totals,explode) title('Sales Contributions of Three Products')