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《Matlab批量读写Excel转化csv格式并邮件发送》内含三个函数： 1、MyXlsWriteV1.m:在不关闭Excel文件时，将所有数据写入到Excel中，减少读写时间：内含Excel单元格转化函数； 2、xlsx2csv.m把路径path中的xlsx文件批量转换为csv文件 ； 3、LjwSendQQMailV1:发送电子邮件,可含附件。 ("Matlab batch conversion of read and write Excel csv format and send mail" includes three functions: 1, MyXlsWriteV1.m: without closing the Excel file, all the data is written to Excel, reducing Reading time: Embedded Excel cell transformation functions 2, xlsx2csv.m path path in the batch convert xlsx file to csv file 3, LjwSendQQMailV1: sending emails, may contain attachments.)

基于matlab的 levy 飞行程序，可以有广泛的应用！(levy flight matlab)

说明：  稀疏傅立叶算法，matlab实现仿真，并对SFFT和FFT算法对同一数据的处理时间进行了对比。(Sparse Fourier algorithm, matlab to achieve the simulation, and the SFFT and FFT algorithm for the same data processing time were compared.)

说明：  充分理解傅立叶变换，直接根据傅立叶积分公式编写，并显示单边，双边谱，对于理解单双边频谱有一定帮助。本程序通过函数与调用来呈现。(Fully understand the Fourier transform, Fourier integral formula directly in accordance with the preparation, and display the unilateral, bilateral spectrum, the spectrum for the understanding of a certain single bilateral help. This procedure with the call to a function.)

一束5W 的线偏振光以Φ = 45 度方位角振动，垂直入射到玻璃 - 空气表面，该光束波长0.6μm，玻璃介质折射率1.54 @0.6m，当入射角θ从0-70 度变化时，通过给定条件，分别完成如下要求： 画出该光束反射光的光强曲线（I-θ）； 分析该反射光束的偏振态变化，画出偏振方向变化曲线（φ-θ）和偏振光束相位变化曲线 （Φ-θ）。 （注：光束从光密到光疏的界面，在入射角θ 从0-70 度变化中，包括了临界角θc）(Bunch of linearly polarized light 5W to Φ = 45 degrees azimuth vibration, normal incidence to the glass- air surface, the beam wavelength 0.6μm, glass refractive index 1.54 @ 0.6m, when the incident angle θ changes from 0-70 degrees By the given conditions, namely the completion of the following requirements: Draw the reflected light beam intensity curve (I-θ) analysis of changes in the polarization state of the reflected beam, draw the polarization direction of the curve (φ-θ) and polarized beam phase curve (Φ-θ). (Note: the light beam from the optical density of the interface is sparse, the incident angle θ  variation from 0-70, including the critical angle θc))

布莱克斯科尔斯模型，应用于金融工程领域。(Black Scholes Model, to price the European Call Option and plot the graph. The model is highly used in quantitative field.)

蒙特卡洛方法的应用算例，采用matlab编写，简单实用(Monte Carlo methods of numerical example, the use of matlab to prepare, simple and practical)

MATLAB FTC有限元方法解方程组，可用于解偏微分方程组中的热传导方程(MATLAB FTCS finite method)

对OFDM系统的发送端和接受端信号的频谱进行仿真，还有星座图(On the OFDM system transmitter and the receiving end of the spectrum signal simulation, there are constellation)

SPCA 主成分分析 数据分析中的必备精品。数学知识哦(The SPCA the main component analysis)