nhist

该代码为PCA主成分分析，可用于特征选择，选取贡献最大的前三个主成分(The code for the PCA principal component analysis, can be used for feature selection, select the largest contribution to the first three principal components)

regarding resampling of images

matlab 相关的数值积分 例如高斯积分 龙贝格积分等等 可参考。(matlab numerical integration-related such as Romberg Gaussian integral points and so can refer to.)

Looping statement in c++

人脸的面部特征提取，有很好的效果，直接解压就可以使用(Face facial feature extraction, have very good effect, direct decompression can use )

this code for shift factor

水声通信中海洋噪声的仿真，wenz测量的噪声谱线级，噪声估计MATLAB(Noise level underwater communication lines in ocean noise simulation, wenz measured noise estimation MATLAB)

Briefly explains about Seven software Quality control Tools such as run chart etc.

按照给定的信号表达式，生成chirp信号，并计算信号的幅频和相频谱。(Expression in accordance with the given signal, to generate a chirp signal, and calculate the signal amplitude and phase spectrum.)

本程序使用matlab编程，可用于水文长时间序列资料的趋势检验。(It is used to test the trend of long hydrological time series data.)