在LabVIEW软件的基础上，通过求解协方差来实现PCA算法，-In the LabVIEW software, based on the covariance achieved by solving the PCA algorithm

This file is for PCA COV

主成分分析的三种方法，一种是自编程序，一种是princomp函数,一种是pcacov函数-Three principal component analysis, one is self-programming, one is princomp function, a function is pcacov