45666011mat-7262

利用 matlab进行数字图像矩阵数据的显示及其傅立叶变换(the show of digital picture )

说明：  code of pendulum using pdi controller

Methods to model communication channel

clustering algorithm

实现哈弗曼压缩编码的matlab程序。（m文件）(Huffman code)

这是一个解决学生排名问题的matlab程序，采用的方法是用最小二乘法求解由模型确立的超定方程组。(This is a solution to the problem of students ranked the matlab program, using the least square method is to use the model established by the overdetermined equations. )

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)

LIBSVM2.84源代码注释文件，主要包括内存分配cache类和核函数kernal类。(LIBSVM2.84 source code annotations files, mainly including the allocation of cache memory kernel kernal classes and class.)

byte to bit conversion

电磁场的时域有限差分法的matlab模拟的程序，计算电磁学的大牛写的程序。(the program writed by famous professor simulates electromagnetic field with FDTD)