利用Matlab编程实现主成分分析,从数学角度来看，这是一种降维处理技术-Using Matlab programming principal component analysis, from a mathematical point of view, this is a dimension reduction process technology

该算法利用遗传算法实现了特征波长的提取，可以有效降维(The algorithm realizes the extraction of characteristic wavelengths by genetic algorithm and can effectively reduce dimension.)