Fourier

动画技术：电偶极子辐射的动态仿真,影片动画和实时动画。绘制各个时刻的电力线图，即使用contour函数在 t取不同值的情况下绘制电力线方程(Animation techniques: electric dipole radiation dynamic simulation, film animation and real-time animation. Rendering of each hour power line, which USES contour function in the wt take different values of electric draw equations )

采用身高和体重数据作为特征，利用C均值聚类方法对数据进行聚类，并将聚类结果表示在二维平面上。(Height and weight data as a feature, using C-means clustering method of data clustering and clustering results expressed in the two-dimensional plane.)

BP神经网络详解与实例，包括多种操作实例与演示说明(BP neural network Xiangjie instructions and examples, including a variety of operating instance with demo)

非线性动力学、分岔 Matlab 程序实现，弹簧质量系统在简谐激励作用下的受迫振动，弹簧的恢复力F与变形x的关系为F=kx3，动力学方程为...30cosmxcxkxFwt++= 其中，给定参数，1m=，0.3c=，1.0k=，1w=，初始条件为(0)3.0x=，.(0)4.0x=设系统的动态参数为F0，绘出系统状态变量随参数变化分岔图，绘图参数对应的系统各周期及混沌状态的时间历程图、相轨迹图、Poincare映射图(Nonlinear dynamics, bifurcation Matlab program, the forced vibration spring-mass system under harmonic excitation, spring restoring force F and deformation x relationship the F = kx3, kinetic equation for ... 30cosmxcxkxFwt++ = wherein the given parameters, 1m = 0.3C = 1.0k = 1W =, initial condition (0) 3.0x = (0) 4.0x = set of the dynamic parameters of the system for the F0, plotted system status system cycle and chaotic state variables with parameter changes bifurcation diagram, drawing parameters corresponding time course of the phase trajectories, Poincare map)

routine to take the Fourier transform of a signal and plot both the time and frequency domain representations. Typical use: >> n = 100 number of data points >> dt = 0.01 spacing between samples >> t = 0:dt:(n-1)*dt time vector >> y = sin(2*pi*10*t) 10 Hz sin wave >> fft_plot(y,dt) plot of signal in time and frequency domain

说明：  计算3阶通计量的程序，程序可以包含在你自己的工程中，做高阶统计必备！(Calculation 3-order through measurement procedures, procedures can be included in your own projects, so higher-order statistics must have!)

matlab双线性插值算法实现图像放大源代码(matlab bilinear interpolation algorithm to enlarge the image)

说明：   The forward lifting discrete 2-D wavelet transform (D2BLDWT) using the 9-7 Antonini filters

matlab仿真PSK的一个doc文档，有显示波形图，等等，是个完整的程序，比较长比较完整的，可以选择性使用(matlab simulation of PSK, a doc document showing the waveform, etc., is a complete program, the longer more complete, you can selectively use)

chapter3 sutton book exercise