Nonlinear-Fiber-Optics

Draw a circle in a matrix using the integer midpoint circle algorithm. Code does not miss or repeat pixels.

将一个512×512的lena.bmp图像进行DCT变换，对得到的DCT系数按8×8块进行分层（分三层），重组填充得到新的系数矩阵，结果发现原图像的能量集中在了新图像的左上角低频部分。(The lena.bmp an image of 512 × 512 is subjected to DCT transform, the DCT coefficients obtained by layering 8 × 8 block (of three), to obtain a new recombinant filling coefficient matrix, the energy of the original image is found concentrated in upper left corner of the low-frequency part of the new image.)

在制定的位置显示图像，还可以改变位置来显示位置，可以自定义横坐标和纵坐标的值。(Position in the development of display images, but also can change the location to display the location, can customize the abscissa and ordinate values.)

in this file programm of finding pca analysis is given

采用MATLAB语言变异的矩阵特征值计算程序，需要的下载吧(eigenvalue computation)

UDF添加动量源项 fluent仿真分析虚拟螺旋桨(UDF momentum)

matlab中的数值微分，有用中点公式，自适应法，理查森外推算法等方法求函数的导数，算法的程序实现在文件中都已经给出了。(in the numerical differentiation matlab, useful midpoint formula, adaptive method, Richardson extrapolation methods such as France seek the derivative of the function, the algorithm of the program implementation in the document have been given.)

给定一个日期，求出该日为星期几（已知2002-3-28为星期四）。(Given a date, find the day of the week (known 2002-3-28 of Thursday).)

说明：  使用matlab对通信系统中的高斯白噪声信道进行建模(Communication systems using matlab on Gaussian white noise channel model)

说明：  matlab经典的一些算法程序集锦，包括插值拟合，解方程，数值分析等等(matlab algorithm program highlights some of the classic, including the interpolation fitting, solving equations, numerical analysis, etc.)