DXSNH

说明：  GM（1，1）灰色模型，便于了解其混沌特性，程序很短，由matlab编译，(GM (1,1) gray model to facilitate understanding of their chaotic behavior, a very short procedure, Matlab Compiler,)

实对称矩阵的schur分解，编译即可运行，需要文件输入(schur decomposition for real symmetric matrix,the program can run successfully, you need a file for input)

MATLAB语言编程工具编制测距模型分析界面，具有可变换测距模型，可变换参数设置及测距结果显示，精度分析等功能。(MATLAB language programming tools for the preparation of Ranging model analysis interface with convertible ranging model of transformation parameters can be set up and ranging results showed that precision of analysis functions.)

网上看到很多关于矩阵求逆运算的代码，都很杂很乱，我把代码重新真理了一边，可以直接编译运行(See a lot of online matrix inversion code, very complex mess, I put the code back to the side of truth, you can directly compile and run)

读入断面数据，根据地形，水位,进行相应计算 (calculate the area and depth )

正交实验中的极差分析代码，确定因素的优水平和最优水平组合，给出指标趋势图。(Orthogonal experiment range analysis code to determine the factors that the optimal level of excellent level and combination of indicators of trends is given.)

说明：  Matlab求解微分方程组，几种经典算法(MATLAB Solves Differential Equations, Several Classical Algorithms)

2D FDTD TE mode with a plane wave source and a PML abc

matlab编写的流体计算和传热程序(很不错的哦)(matlab prepared and heat transfer fluid calculation procedures)

计算低速气动力的涡格法程序，来自NASA，可信度高(This is a vortex lattice aerodynamic program from the low speed aerodynamics group at NASA Langley)