k均值聚类，类数可以自行指定，输出散点图，红色十字为聚类中心-K-means clustering, the class number can be specified on its own, the output scatterplot chart, and the Red Cross for clustering center

matlab课程编程【谷速软件】颜色编码的散点图-Courses matlab software programming speed [Valley] color-coded scatterplot