K-means算法实现

Posted 2020-12-02 magicalzh

目录

• K-means

K-means

x = xlsread("D:MatlabData西瓜数据集.xlsx");
m = length(x);
[Idx,C]=kmeans(x,3);
for i=1:m
    if Idx(i)==1
        a=‘b+‘;
    end
    if Idx(i)==2
        a=‘g+‘;
    end
    if Idx(i)==3
        a=‘k+‘;
    end
    plot(x(i,1),x(i,2),a);
    hold on;
end
for i=1:3
    plot(C(i,1),C(i,2),‘r*‘);
    hold on;
end

结果如下