首先说说自相关和互相关的概念. 自相关 在统计学中的定义,自相关函数就是将一个有序的随机变量系列与其自身作比较.每个不存在相位差的系列,都与其都与其自身相似,即在此情况下,自相关函数值最大. 在信号分析当中通常将自相关函数称之为自协方差方程. 用来描述信息在不同时间的,信息函数值的相关性. 互相关 在统计学中,互相关有时用来表示两个随机矢量 X 和 Y 之间的协方差 cov(X, Y),以与矢量 X 的“协方差”概念相区分,矢量 X 的“协方差”是 X 的各标量成分之间的协方差矩阵.
求助!!用matlab画两个曲面的图 这是我写的程序,但是运行不出来,麻烦帮我修改一下,谢谢!!clearallcloseall[x,y]=meshgrid(0:.1:60);z1=(25*y-25*sqrt(26^2-x^2)+8.5)/(sqrt(26^2-x^2)-7.25);z2=sqrt(3600-120*s... ============================ clear all close all [x1,y1,z1]=meshgrid(-26:1:26,-100:5
Intersecting Lines Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 13481 Accepted: 5997 Description We all know that a pair of distinct points on a plane defines a line and that a pair of lines on a plane will intersect in one of three
You are given n points on Cartesian plane. Every point is a lattice point (i. e. both of its coordinates are integers), and all points are distinct. You may draw two straight lines (not necessarily distinct). Is it possible to do this in such a way t
Line.h #pragma once //Microsoft Visual Studio 2015 Enterprise //根据两点式方法求直线,并求两条直线的交点 #include"BoundaryPoint.h" #include"Coordinates.h" class Line { public: Line GetLine(BoundaryPoint sourcePoint, BoundaryPoint endPoint); Line GetLine(C