yz

说明：  NPC三电平仿真, matlab仿真，2017版本(NPC 3level invrter simulation)

函数作用： cwstd.m——用综合标准化法标准化矩阵 Cwfac.m——计算相关系数矩阵，计算特征向量和特征值，对主成分进行排序，计算各个特征值的贡献率，挑选主成分（贡献率达与85 ），输出主成分个数，计算主成分载荷 Cwscore.m——计算各主成分得分，综合得分并排序 Cwprint.m——读入数据文件，调用以上三个函数，并输出结果 原始数据：存储在src.txt中是一个30×8的矩阵 敲入命令： (PCA)

matlab入门书籍，好好学习，将来一定会有用处的。(Matlab entry books, study well, in the future will be useful. )

摄像机的标定、角点的提取、三维空间的重建、最后生成矫正后无畸变的图形(Camera Calibration，This section takes you through a complete calibration example based on a total of 20 (and 25) images of a planar checkerboard. This example lets you learn how to use all the features of the toolbox: loading calibration images, extracting image corners, running the main calibration engine, displaying the results, controlling accuracies, adding and suppressing images, undistorting images, exporting calibration data to different formats... This example is highly recommended for someone who is just starting using the toolbox. )

说明：  解两点边值问题的有限元程序代码（matlab）(Solution of Boundary Value Problems of Finite Element code (matlab))

通信系统中的符号调制，包括BPSK，QPSK，8PSK以及QAM的符号调制方式选择源程序。(Modulation symbols in a communication system, including BPSK, QPSK, 8PSK and QAM modulation scheme selection symbol source.)

批处理for语句从入门到精通，讲述批处理的for语句的机制，目录如下： 一 前言 二 for语句的基本用法 三 for /f 含变量延迟 四 for /r 五 for /d 六 for /l(Batch for statements entry to the master, tells the story of a batch of for statements mechanism, directories are as follows: one preface Two basic uses of the for statement Three for /f with variable delay Four for /r Five for /d Six for /l)

该方法能较快实现数字图像相关方法计算位移和应变(The realization of digital image correlation method to calculate the displacement and strain )

Linear algebra problems!

给出了关于图像的多种处理方法，并且自己相处了想出了分水岭算法的改进(Given a variety of approaches to image processing, and got along with the idea of an improved watershed algorithm)