Addendum_Unicycle

这是计算分维数的分形程序，经检测能完美运行，效果很好。(This is dimensions calculation fractal program, after testing can perfect operation, the effect is very good. )

edge detector using Sobel and Gradient Operator in Matlab

提取大量txt文本中的相同序号的数据，保存至数组，作为纵坐标画出图形。(Txt text to extract a large number of the same data, save it to an array, as ordinate drawn graphics.)

基础的matlab程序，适合初学人员，多读多练，我觉得很好(Matlab-based program, suitable for novice staff, and more time practicing, I feel good)

arma模型，利用matlab来实现的，arma模型的matlab代码实现。可以实现任意步数的预测。(arma model using matlab.You can achieve any number of steps predicted. )

polydern: partial derivatives of a n-dimensional polynomial model created by polyfitn. usage: pout = polydern(p,diffvar)

用于计算标准化降水指数，广泛用于气象等行业(Used to calculate the standardized precipitation index, widely used in meteorological and other industries)

一个著名简单的信息隐藏程序Contraband 9i (for Win311 or up - download-size 245K).rar(Information Hiding a well-known simple procedures Contraband 9i (for Win311 or up- download-size 245K). Rar)

说明：  可根据需要一步步生成三变量或者四变量的卡诺图！谢谢！(To make kanuotu!)

设r是f(x) = 0的根，选取x0作为r初始近似值，过点（x0,f(x0)）做曲线y = f(x)的切线L，L的方程为y = f(x0)+f (x0)(x-x0)，求出L与x轴交点的横坐标 x1 = x0-f(x0)/f (x0)，称x1为r的一次近似值。过点（x1,f(x1)）做曲线y = f(x)的切线，并求该切线与x轴交点的横坐标 x2 = x1-f(x1)/f (x1)，称x2为r的二次近似值。重复以上过程，得r的近似值序列，其中x(n+1)=x(n)－f(x(n))/f (x(n))，称为r的n+1次近似值(Let r is f (x) = 0 root, select the initial approximation x0 as the r, over point (x0, f (x0)) to do the curve y = f (x) the tangent L, L the equation y = f ( x0)+ f ' (x0) (x-x0), find the intersection of L and the x-axis of abscissa x1 = x0-f (x0)/f' (x0), x1 is called an approximation r. Through points (x1, f (x1)) to do the curve y = f (x) the tangent, and find the intersection of the tangent with the x-axis of abscissa x2 = x1-f (x1)/f ' (x1), x2 is called r the second approximation. Repeat the process, get an approximation of the sequence r, where x (n+1) = x (n)-f (x (n))/f ' (x (n)), as an approximation of r n+1 times)