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用Ritz-Galerkin方法解边值问题： u +u=-x,0<x<1, u(0)=u(1)=0,精确解为u*(x)=sinx/sin1-x； 得出结果与精确解作比较，画出误差分析图(With the Ritz-Galerkin method to solve the boundary value problem: u' ' + u =- x, 0 <x<1, u(0)=u(1)=0,精确解为u*(x)=sinx/sin1-x； 得出结果与精确解作比较，画出误差分析图)

对啁啾和色散概念的理解，通过MATLAB编程实现可视化(matlab code for chirp and dispersion)

信号与系统初学者必备,很好很强大，恩 对 很好很强大(the necessity of beginners to the signals and systems )

复杂的卡尔曼滤波例子,跟踪物体穿越空中大气层 (Hybrid extended Kalman filter example.Track a body falling through the atmosphere.)

基于四边形单元有限元原理，计算桁架系统在外力作用下，各节点位移与单元应变。主程序BLOCKMAT.m，从输入文件中读入结点个数，单元个数，结点荷载个数，受约束边界点数，弹性模量，泊松比，厚度，单元定义数组，结点坐标数组，结点力数组，约束信息数组。输入文件inport.txt不同参数代表不同的桁架结构。(Based on quadrilateral finite element principle, calculation of truss system under the action of external force, the displacement of each node and element strain. Main program BLOCKMAT. J m, read from input file node number, cell number, number of nodal load, a constrained boundary points, elastic modulus, poisson s ratio, thickness and unit defined array, node coordinate arrays, nodal force array, array constraints information. Input file inport. TXT different parameters represent different truss structure.)

ISODATA聚类算法的matlab实现，测试用例使用的是身高和体重（放到.txt文件，从该文件中读取数据），根据身高体重划分为男女两类（上传文件中的sample即为测试例）(ISODATA clustering algorithm matlab implementation, test cases using height and weight (put. Txt file, read from the file data), classified according to height and weight categories for men and women (the uploaded file is the test sample cases))

4PAM和8PAM在AWGN信道下载波调制的性能分析(4PAM and 8PAM in AWGN channel wave modulation performance analysis download)

Matlab不仅具有强大的数值运算功能，也同样具有非常强大的二维和三维图形绘制功能，尤其擅长于将各种科学运算结果的可视化。计算的可视化可以将不直观的数据通过图形来表示，从而发现其中的内在关系。Matlab的图形命令格式简单，可以使用不同的线形，色彩、数据点标记和标注等来修饰(Graphic Design)

fft spectrum audio file

finding sift use matlab