hjorth

说明：  讲述电力电子技术中变换技术和控制技术的指导用书(About the power electronics and control technology in the transformation of the guide book)

分析一个文件夹及其子文件夹下所有的html文档，并查找文档中加载的png图片文件，通过urlwrite函数下载并保存png类型的图片文件到硬盘上。 此matlab代码用到了网络连接，下载，并且通过多线程技术，增加了下载的速度。 可以通过这个方法，下载网页中的内容，可以说想怎么下，就怎么下。(Analysis all the files of type html in a folder, find the documents that load png image file.Then download and save the png file to harddisk through urlwrite function .)

PCNN量化，利用人眼视觉特性对图像进行量化，保持细节信息。(PCNN quantified using the human visual system to quantify the image, keeping details.)

recnstitution重构相空间，在非线性系统分析中有重要的作用(recnstitution reconstructed phase space, in the nonlinear analysis has an important role in)

help for matlab

this code helps to find answer through polynomial regression method

基于matlab实现的计算光谱数据的马氏距离的算法和多元散射校正MSC(An algorithm for calculating the Markov distance of spectral data based on MATLAB and MSC for multiple scattering correction)

采用粒子群矢量量化算法生成图像矢量量化的最优码书，可以任意设定种群数与迭代代数。程序结果产生最优码书与平均误差。(Vector quantization using particle swarm algorithm for optimal image vector quantization code book, can set the number of stocks and iterative algebra. The results of the proceedings arising from the optimal codebook with an average error.)

base_band.rar文件解压后可以在matlab平台直接编译运行，实现通信系统的升余弦基带 成型处理，码元速率，采样率、滚降系数都可以灵活设置，特别方便学习通信的同学加深对基带信号的理解。(base_band.rar unzip the files can directly compile and run matlab platform to achieve communication system raised cosine baseband shaping processing, chip rate, sample rate, roll-off factor can be set flexibly, in particular, to facilitate students to learn to communicate better to the base band signal understanding.)

暂态潮流计算，包括主程序及一系列的调用程序，附故障设置(Transient flow calculation, including the main program and a series of calls to program, but failed to set)