TP1_CHEN

说明：  用于最小二乘法进行曲线拟合的MATLAB源代码(Curve fitting)

串的一些基本运算，删除一段子串，置换，求s串中从start位置开始长度为len的子串等等(Some of the basic string operations, delete a substring, replacement, seeking s string starting from the start position of the sub-string of length len, etc.)

matlab应用源程序，只能采集，网络连接(matlab application source code, can collect)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

说明：  vb 调用matlab方法实例，包括调用matlab绘图，matlab分形计算等。(vb call methods matlab examples, including the call matlab graphics, matlab fractal calculation.)

ttis is a forgery detction ppr to implemnt.

Arduino平台上的计时器，主要用于定时中断的库文件，能够有效解决Arduino没有定时中断的问题(Arduino timer library platform, mainly for the timer interrupt, can effectively solve the problem of Arduino no timer interrupt)

循环码的编码译码，以7，3循环码为例，有简单的文字提示(Cyclic code encoding decoding)

快速的关闭MATLAB figure窗口，快速的关闭MATLAB figure窗口，(MATLAB figure window closing fast, fast closing MATLAB figure window,)

图像压缩算法的各种算法，用VC++实现，直接可以编译运行(Image compression algorithms algorithms, using VC++ implementation can be compiled to run directly)