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函数功能:获取一组整数序列的元素出现的频率。
源码:
function [x_uniq, dist] = Number_Distribution(x)
x_uniq = unique(x);
dist = zeros(length(x_uniq),1);
for i = 1:length(x_uniq)
dist(i) = sum(x==x_uniq(i)) / length(x);
end
主要用到unique函数来确定序列中不重复的元素,然后遍历一下这些不重复的元素。
x=[1 2 3 4 5 1 1 2];
[x_uniq, dist] = Number_Distribution(x)
x_uniq =
1 2 3 4 5
dist =
0.3750
0.2500
0.1250
0.1250
0.1250