learn-Matlab

麦克风指向性调试源码，可用于麦克风指向性测试，对声学研究有用(Debug source directional microphone, directional microphone can be used to test for acoustic research useful)

cusum test for faulty

Revival of a 14 years old code (written in 1991 for MATLAB 2.x). Given a set of measured x,y pairs that a re supposed to reside on a circle, but with some added noise. A circle to these points, i.e. find xc,yc,R, such that (x-xc)^2+(y-yc)^2=R^2 The method minimizes the sum of squared radial deviations.

水和蒸汽性质计算V5.5，能够计算任何条件下水和蒸汽的参数，能够在matlab下使用。(Water and steam properties calculation V5.5, able to calculate any conditions of water and steam parameters can be used in matlab.)

说明：  场区由两个PEC板组成，它们在y和z维度上延伸到无穷大，彼此平行。PEC板之间的空间充满了空气.在问题空间的中心放了一个电流源。(The field area consists of two PEC plates, which extend to infinity in the y and z dimensions, parallel to each other. The space between the PEC boards is filled with air. A current source is placed in the center of the problem space.)

在VC++使用Matlab引擎，实现绘图计算操作，初学者必备！(In VC++ using the Matlab engine calculated to achieve the drawing operation, necessary for beginners!)

不适用任何库函数，自己用matlab编写的直方图均衡化，可以看到结果图片(realize the Histogram Equalization without extant function)

iris with matlab.irisData is 150x5. row: Sepal.Length Sepal.Width Petal.Length Petal.Width Group(1,2,or 3) the first 50x5 is Isis-setosa(1), the second 50x5 is Isis-versicolor(2), the last 50x5 is Isis-virginica(3). !!! Caution !!! X(50 + 21, :) equals X(50 + 50 + 27, :), but Y(50 + 50 + 21) DOESNOT equal Y(50 + 50 + 27)! So the algorithm will NEVER be 100 correct.

运用打靶法求解二阶边值问题。 A1*d/dx(dy/dx) + A2*dy/dx + A3*y + A4 = 0(To illustrate the use of Runge-Kutta method in the Shooting method as applied to a function of the user s choosing.)

无约束条件的粒子群优化算法代码，简单实用！(No constraints PSO algorithm code, simple and practical!)