lsr

说明：  本次上传的matlab代码，是基于Mantegna方法模拟萊维飞行，生成levy飞行图；总的飞行次数参数可根据需要更改。(The uploaded matlab code is based on Mantegna method to simulate Levy flight and generate Levy flight chart; the total number of flight parameters can be changed as needed.)

说明：  海量数据导入与导出matlab的有效方法，在数学建模时处理大量数据非常有用(Mass data import and export matlab effective method, in the mathematical modeling is very useful to deal with large amounts of data)

car counting using matlab from matlab demos

matlab information retrieval

这是一个决策树的matlab实现，已经测试通过(This is a matlab implementation of decision tree, have the test pass)

最小二乘回归法（PLSR：partial least squares regression)：是一种新型的多元统计数据分析方法，它主要研究的是多因变量对多自变量的回归建模，特别当各变量内部高度线性相关时，用偏最小二乘回归法更有效。另外，偏最小二乘回归较好地解决了样本个数少于变量个数等问题。(Least squares regression (PLSR: partial least squares regression): a new type of multivariate statistical data analysis methods, the main research is more dependent variable regression modeling of multi-argument, especially when highly linear within each variable When using partial least squares regression method is more effective. In addition, partial least squares regression better solution to the problem of the number of samples is less than the number of variables.)

利用干扰观测器+滑模控制进行机械臂轨迹跟踪，完整代码(The trajectory tracking of the manipulator with disturbance observer + sliding mode control)

％radon transform clear all ％ N=800 n=1:N fs=200 t=n/fs x1=exp(j*2*pi*(5*t+0.5*5*t.^2)) x2=exp(j*2*pi*(5*t+0.5*15*t.^2)) x=x1+x2 ％N=length(x) ％ ambifunb(x ) ％*****************************************RAT naf=ambifunb(x) htl(abs(naf)) ％ [wh,rho,theta]=htl(abs(naf)) colormap([0,0,0]) ％ xlabel( 极半径 ) ％ ylabel( 角度 ) ％**************************************％找出峰值点的坐标,计算初始频率和调频斜率(正确) ％找出峰值点的坐标 b=max(max(wh)) [u,a]=find(wh>=0.8*b) ( Radon transformclear all N = 800 n = 1: N fs = 200 t = n/fs x1 = exp (j* 2* pi* (5* t+ 0.5* 5* t. ^ 2)) x2 = exp ( j* 2* pi* (5* t+ 0.5* 15* t. ^ 2)) x = x1+ x2 N = length (x) ambifunb (x)***************************************** RATnaf = ambifunb (x) htl (abs (naf)) [wh, rho, theta ] = htl (abs (naf)) colormap ([0,0,0]) xlabel (polar radius) ylabel (angle)************************************** to find the coordinates of the peak point, calculating the initial slope of the frequency and FM (right) find the peak point of the coordinates b = max (max ( wh)) [u, a] = find (wh)

Solution for some problems in Codeforces

gist算子的matlab编程。本人自己编写(The gist Operators matlab programming. I have written)