artalgoritho

在MATLAB环境下对一个地震道集作道集图(In the MATLAB environment for a set of seismic gathers map)

可以选取图像的部分进行放大操作，能够更好的展现图片的细节，论文制图必备工具。通过调用mmzoom命令即可实现(To partial enlarge fig, which can better shows the detail of picture. It s an essential tool for paper writing. It can be implemented by entering mmzoom .)

matlab子函数，RPCA。已调试通畅，可直接调用，无需折腾。(matlab Functions, RPCA. Debugging has been smooth, can be called directly, without having to toss.)

双参数的双门限语音端点检测程序MATLAB代码 可直接运行(Two parameters of the double threshold endpoint detection procedures MATLAB code can be directly run)

说明：  我们晓得脉冲压缩很重要，那么怎么来进行脉冲压缩呢？(We know that pulse compression is important, then how to carry out pulse compression it?)

examples code correctors

说明：  利用BP神经网络作为分类器，对公司财务进行分类，构造分类器，结果表明能够很好的将数据分类，有兴趣可以看看。(BP neural network is used as a classifier to classify corporate finance and construct a classifier. The results show that the data can be well classified and you can have a look if you are interested.)

Fractal Explorer GUI-based program for exploring and studying the most common form of fractals, chaotic systems and fractional dimension systems

选取windows系统自带的ding.wav信号作为分析对象，在Matlab软件平台下，利用函数wavread对音频信号进行采样，记住采样频率和采样点数，听一下原始声音sound(y, fs, bits)。 （2）音频信号的频谱分析，先画出音频信号的时域波形；然后对音频号进行快速傅里叶变换fft(y,N)，N取32768，画出信号的频谱特性，加深对频谱特性的理解。 （3）根据频谱，反演时域特性，画出时域波形。寻找幅值最大的两个频率，此频率除以fft点数在乘以采样频率就是信号的主频，即可合成信号的时域图形，听一下声音。 （4）对原音频信号进行1024点的分段付立业分析meshgrid （5）根据主要频线合成音频，并画出时域图形，试听合成效果。 （6）采用线性插值（linspace）和傅立业反变换(fliplr, ifft)分别合成音频，并画出时域图形，试听效果。 (err)

数值解法 例1 用改进的欧拉方法求一阶方程初值问题的 数值解 例2 数学摆的运动方程与近似方程数值解比较 例3 四阶龙格库塔公式求数值解 Matlab实现求数值解 例1 求初值问题y =x*sin(x)-y,y(0)=0的数值 解.先编辑一个定义方程的ODEF函数文件 ODEfun1.m. 例2 求方程组初值问题的数值解,按指定步长 0.05划分节点. 例3 按指定的精度求高阶方程初值问题的数值解.(Numerical Solution of the law a method of using the improved Euler' s equation of order to a first-order initial value problem of the numerical solution of cases of two mathematical pendulum equations of motion compared with the approximate numerical solutions of equations of three cases of fourth-order Runge-Kutta numerical solution of the formula Matlab order to achieve the numerical solution of demand cases seeking an initial value problem y ' = x* sin (x)-y, y (0) = 0 the numerical solution. first, the definition of an equation editor ODEF function file ODEfun1.m. cases of two demand equations initial value problem of numerical solution, according to the specified division of the node step 0.05. Example 3 according to the specified precision of seeking higher-order equation of the numerical solution of initial value problem.)