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利用自相关函数可以进行分析时间序列里面存在的内部特征信息，可以分析这些得到自己有用的信息。(Using the autocorrelation analysis of time series can exist inside the internal characteristic analysis of these information, can get useful information.)

this is a code and it is very simple code

说明：  REOF Varimax 旋转的EOF正交分解Matlab程序(EOF analysis rotated by VARIMAX--> REOF method)

说明：  《Matlab从入门到精通》所有的源程序。(《Matlab from entry to the master》 all of the source.)

MATLAB平台下的基于人工神经网络的非线性控制系统PID参数整定代码，能实现在线调节功能。(MATLAB platform artificial neural network-based nonlinear control system PID parameter tuning code, to achieve regulatory function online.)

运行该程序会在路径【F:图片\美好心情】上生成一幅照片，其名字为当前的拍摄时间。 1、需事先建立路径【F:图片\美好心情】 2、电脑为windows系统且配有摄像头(Run this program in the path [F: Pictures a better mood] to generate a photo, their name for the current recording time. 1, prior to the establishment of the path [F: Pictures a better mood] 2, the computer system for windows and with camera)

说明：  带时间窗的vrp问题，MATLAB程序，多车场问题(VRP Problem with time window, matlab program, multi yard problem)

根据已经给定的数组，按要求绘制直方图的形状(code)

基于光学原理的三维形貌测量技术研究Study the topography measurement techniques based on optical principles. Rar(Study the topography measurement techniques based on optical principles )

用最小二乘法实现多项式拟合；三种常见插值函数的求解及应用(Polynomial fitting using least squares method three common interpolation function of the Solution and Application)