gui

DistMesh giving a singular FEM matrix?(Hi Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D: rho_1 < rho < rho_2 where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition. Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used: Circle with hole rABC=1.5 rCyl=0.5 fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl) fd=inline(fdstring, p ) box=[-2,-2 2,2] [p,N]=distmesh2d(fd,@huniform,0.04,box,[]) I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)

Simulink小问题集锦 值得一看！(Simulink allehanda see a small problem!)

aiming at the reliability analysis of meaures

说明：  MATLAB实现kaiser窗函数。~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (MATLAB kaiser window function to achieve)

用到了几种vs中的几种导航列表，实现主页与子页面的转换(Used in several vs several navigation list, to achieve sub-pages home page and conversion)

汽车速度调节 PID控制系统仿真 利用matlab中的simulink对汽车的速度调节进行系统仿真(Car speed regulator PID control system simulation using matlab simulink in the car' s speed regulator for system simulation)

本例程是利用MATLAB作为开发工具，编写代码实现卷积的数值运算(This routine is to use MATLAB as a development tool to write code to achieve the numerical convolution of)

MIMOSAR方面的最新的文献，2015年SCI，有需要的可以参考下(A Novel Scheme for Ambiguous Energy Suppression in MIMO-SAR Systems)

用于车辆路径的优化的禁忌搜索程序代码，能够解决多车辆的动态调度问题(it is for SDVRP )

This book is a short, focused introduction to MATLAB, a comprehensive software system for mathematics and technical computing. It will be useful to bothbeginning and experienced users.