im1

说明：  ER: is the code for the Error Ratio metric performance for multi-objective optimization problems: ERtest is the code for no threshold value, whuile ERtest2 code with a thresho d value defined by the user

validity check for polar to cartesian conversion

二维信号卷积，若x为N1*M1的二维信号，y为N2*M2的二维信号，则卷积为(N1+N2-1)*(M1+M2-1)的信号(Two demension signal convolution. )

利用MATLAB程序逐个统计图像的边界点，并存入矩阵(MATLAB program using statistical image boundary points one by one, and deposited matrix)

IIR滤波器的matlab实现，代码精简，实用。(IIR filter matlab realize, code streamlining and practical.)

topsis代码我看了没有什么问题如果有问题请与我联系(topsis code I saw no problem if you have questions please contact me)

利用matlab仿真产生线性调频信号，并实现线性调频信号的匹配滤波。(Using matlab simulation to generate LFM signal and realize matched filtering of LFM signal.)

说明：  心电信号仿真数学模型建立，基于国外的一片论文的源代码，包括可调的几个关键参数。(ECG simulation mathematical model, based on a piece of paper outside the source code, including several key parameters adjustable.)

牛顿法， 快速解耦法， 。潮流计算在数学上属于多元非线性方程组的求 解问题，在用迭代法求解时涉及到大量的矢量和矩阵运算，因而寻求一个能高效 地处理矩阵运算的语言，将给潮流计算程序的编制带来巨大的方便.(fast flow electric Power flow calculation is mathematically the solution of multivariate nonlinear equations. Solving the problem involves a large number of vector and matrix operations when solving the iterative method, thus seeking a highly efficient solution. The language of matrix operation will bring great convenience to the compilation of power flow calculation program.)

说明：  《Matlab与C++》这本书的第3章，包含matlab程序和C++程序(&quot Matlab and C++&quot Chapter 3 of this book, including the matlab program and C++ program)