tutorial.m

说明：  GSM的仿真源码,比较详细,分为模块和全信道两部分(Simulation GSM source, more detailed, divided into modules and the entire channel in two parts)

100个实用的MATLAB程序，对初学MATLAB者很有用(100 useful MATLAB programs, MATLAB are very useful for beginners)

使用有限元方法, 2D FEM计算热扩散方程. 三角形分割. (use of the finite element method, 2D FEM calculation of thermal diffusion equation. Triangle division.)

利用Matlab提取图片中的数据 从事科研或者工程的人员在文档撰写过程中，常需要将文献中的曲线与自己的结果对比，为获取原始数据，一种常用的办法是手动描点，即将原始曲线放大然后打印出来，选取一定数量的点，读出其横纵坐标，然后重绘。对于较为平坦的曲线，这种方法当然可行，但当曲线数量增加，曲线变化复杂，这种方法工作量可想而知。前段时间由于原始数据丢失，仅剩几十幅图片，本人尝试过手动描点，经历几个小时奋战，实在无法继续，索性转向matlab，借助其强大的数据处理能力，编写了两个GUI的小软件image2data、data_poly提取数据，如今大功告成，遂于大家分享。(Using Matlab to extract picture data in scientific research or engineering personnel in the process of writing documentation, often need to curve in the literature comparing the results to obtain the original data, a common approach is described in the manual, is about the original amplification curve and then print it out, select a certain number of points, read out its horizontal and vertical coordinates, and then redraw. For a flatter curve, this approach is of course possible, but when the increase in the number of curves, the complexity of the curve, this method can imagine the workload. Some time ago due to the loss of original data, except for the dozens of pictures, I tried manually tracing point, after several hours of fighting, I can not continue to simply turn to Matlab, with its powerful data processing capabilities, the preparation of two GUI software image2data, data_poly extract data, and now you' re done, then share with you.)

图像处理 蛇行法处理图像问题 Using Dynamic Programming for Solving Variational Problems in Vision(1)书中的一个例子(Image processing image processing problems hunting law)

57节点潮流计算代码,能够显示出潮流计算结果，输入renfp（‘case57’）即可(57 node flow calculation code, can show the flow calculation results, enter renfp (' case57' ) can be)

Euler 用前向差分的欧拉方法解微分方程 fun 表示f（t,x） t0,tt表示自变量的初值和终值 x0表示函数在x0处的值,其可以为向量形式 N表示自变量在[t0,tt]上取的点数(this thechafen jiefen ，zijilijie)

三角波的频谱研究matlab程序，可以画出三角波，并根据性质来改变得到希望的波形(The triangle wave spectrum matlab program, you can draw the triangle wave and waveform hope to change based on the nature)

本文档主要实现ccsk编码和解码功能，主要实用于数据通信中(This document is intended to achieve ccsk encoding and decoding functions, mainly useful in data communications)

海洋环境噪声和鱼类叫声的频域波形（fft）(The marine environment and fish noise sounds waveform in frequency domain (fft))