代码里有很完整的注释和解释，多元数据分析的主分量分析投影，本程序的性能已经达到较高水平，有详细的注释，本程序的性能已经超过其他算法。- Code, there are very complete notes and explanations Principal component analysis of multivariate data analysis projection, The performance of the program has reached a high level, There are detailed notes, This program has exceeded the performance of other algorithms.