计算光谱阵中吸光度向量与浓度向量的相关系数，波长变量选择可以用此方法！-Absorbance in the spectral matrix calculated correlation coefficient vector and concentration of vector, wavelength, variable selection can use this method!

对数据进行功率谱分析，计算波数，对应周期，相关系数和能量，并进行检验，分析数据的显著周期。-Power spectrum analysis, calculation of wave number, the corresponding period of the data, the correlation coefficient and energy, and test cycle, significant data analysis.

计算互相关函数,那么可以得到两列数据的最大互相关系数。(calculate the cor-relaration function)