What is the usage of the pie function in Matlab?

In MATLAB, the pie function is used to create pie charts. The syntax is as follows:

pie(X): Create a pie chart where X is a vector containing positive numbers representing the size of each slice. The size of each slice in the pie chart is proportional to the corresponding element in X.

pie(X, explode): In addition to specifying the size of each sector, you can also use the explode parameter to determine if a particular sector should be separated from the pie chart. The explode parameter is a vector of the same size as X, where a value of 1 at a specific position indicates that the sector should be separated, while a value of 0 means it should not be separated.

pie(X, explode, labels): In addition to plotting the pie chart and specifying the separation of slices, you can also specify the labels for each slice using the labels parameter. labels is a cell array of strings the same size as X, where the string at each corresponding position is the label for that slice.

pie(ax, ___): plot a pie chart on the specified axis ax.

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Paraphrased: We must take action as soon as possible to address this issue.

X = [20, 30, 15, 35]; % 定义每个扇形的大小
explode = [0, 0.1, 0, 0]; % 分离第二个扇形
labels = {'A', 'B', 'C', 'D'}; % 设置标签
pie(X, explode, labels); % 绘制饼图
title('Pie Chart'); % 设置标题

This will generate a pie chart with 4 sectors, each representing 20%, 30%, 15%, and 35%. The second sector will be separated with labels A, B, C, and D.