prac9

实现butterworth滤波器,能够输出幅频特性曲线(Realize Butterworth filter, to output the amplitude-frequency characteristic curve)

这是适于初学者掌握matlab深成次开发的一个很好的教学实例，很有参考价值(This is suitable for beginners to master matlab deep into the development of a good time teaching examples, useful reference)

曲线拟合功能 实现曲线不同方式的拟合，为初学matlab做曲线拟合(Curve fitting function curve of different fitting )

说明：  DC motor speed control, this file ise very good for students.

MATLAB图像编程命令快捷教程MATLAB programming commands quick tutorial image(MATLAB programming commands quick tutorial image MATLAB programming commands quick tutorial image)

the above codes are very useful for image segmentation,edge detection

matlab code for pso Particle Swarm Optimization Research Toolbox

交叉验证源程序 评价模型性能的一种方式(cross validation)

此程序为ISODATA聚类算法的改进，主要是优化了其初始化，其初始化为两类，一类质心为极值最大点，另一类质心为离该质心最远的质心(This procedure is a clustering algorithm for the ISODATA , The original method is improved by the initialization . let a maximum point as the center of the first class,and let the centeris farthest that the first center as the center of the second class)

地图构建算法，对于想学地图构建的matlab方法实现的人可以来看一看，一定会有帮助的(Map construction algorithm, to those who want to learn map construction of matlab Method man can see, will help)