Reed

说明：  《MATLAB程序设计教程》源代码，为书籍源代码(Matlab design lecture)

this code describe extract feauter

频率解与动态区域解 频率普分析(Frequency spectrum analysis)

二维声子晶体带隙计算，XY色散关系计算，matlab编程(Two dimensional phononic crystals bandgap calculation, calculation of XY dispersion relation, matlab programming)

动态方式观察物体坠落的过程，从而达到动态的仿真效果。(The dynamic way observation object crashes process, thus achieves the dynamic simulation effect. )

在matlab软件中进行数值计算，求解已知方程的根值，matlab例程(Matlab software, numerical calculation, solving the known value of the root of the equation, matlab routine)

展示了如何生成一个随机无标度网络图，基本结构分析，包括度分布、聚类系数等。观察两种类型的攻击对网络的影响：随机攻击（所有的几点有相同的概率从网络中删除）、有目标地选择连接度最大的节点（节点度最大的节点从网络中删除）。(Shows how to generate a random scale-free network graph, basic structural analysis, including degree distribution, clustering coefficients, etc. Observe the impact of two types of attacks on the network: Random attacks (all points have the same probability of being removed from the network), and select the node with the highest degree of connectivity (the node with the highest node degree is removed from the network).)

说明：  传感器阵列波束优化设计与应用书籍的第四章matlab程序(Chapter 4 matlab program of book Sensor array beam optimization design and application)

this is matlab small programming for compare the graphic with color

平稳随机信号（离散信号）的谱分析，周期图法以及Bartlett平均周期图法等方法及其之间的比较(Stationary random signal (discrete signal) spectral analysis, the average periodogram and the Bartlett periodogram method and other methods of comparison between)