xuansuoqiao

计算数码照片植被覆盖度。包括照片裁剪，RGB2HSL和计算(compute the vegetaion cover of digital image.)

说明：  comsol仿真的学习教程，有助于初学者深度掌握comsol的 基本使用(Comsol simulation course is helpful for beginners to master the basic usage of COMSOL)

常见的各类数值和字符算法，包括微积分、插值、矩阵、微分方程、方程组求解和字符串操作等，Fortran77版本，可直接用于各位自己的代码开发中(Most common algorithms, including numerical and char recipes, Fortran 77 version, can be used in your own program develpment directly)

流体力学SIMPLE算法（C语言编程实现）需自己设定边界条件(SIMPLE algorithm)

数值分析中三次样条插值算法，运行稳定，并能画出最后的插值曲线(Numerical Analysis of cubic spline interpolation algorithm, running stability, and can draw the final curve interpolation)

说明：  该程序用有限元方法来处理标量亥姆赫兹方程，其实例是脊形介质波导中的光波。(The functino of the code is to slove Helmholtz equation by using finite element method (FEM). The example is an optical waveguide.)

螺旋桨唱音信号建模，FFT变换后有明显的谐波(The propeller singing sound signal is modeled, and FFT transformation has obvious harmonic )

PRE IN POST OREDER TRAVERSAL C++ CODE VISUAL

说明：  二维光子晶体弯曲波导的fdtd程序,matlab语言 ,TE波, PML边界条件,平面波光源(Two-dimensional photonic crystal waveguide bend the FDTD program, matlab language, TE wave, PML boundary conditions, plane wave light source)

模拟Chaboche非线性随动硬化各向异性塑性的例子 -HILL和CHAB的实例(Chaboche simulation examples of anisotropic nonlinear kinematic hardening plastic -HILL and examples of CHAB)