ssvep

mathlab simulink position

R 语言 的金融组件 文档, 用于金融证券的分析，研究模型非常好有用。(the finance component of R language )

说明：  龚纯主编的“matlab语言常用算法程序集”的第九章源代码(Gong pure edited matlab language commonly used algorithm for assembly, &quot the ninth chapter of source code)

小波包分析提取振动信号中的分解小波包分析提取振动信号中的分解(Wavelet packet analysis vibration signal decomposition wavelet packet analysis vibration signal decomposition)

clear all I=imread( lena.bmp ) figure imshow(I) I2=imrotate(I,-4, bilinear ) 逆时针旋转4度 figure imshow(I2) I3=fliplr(I) 垂直镜像 figure imshow(I3) I4=imresize(I,0.5, bilinear ) 缩小为原图的1/2 figure imshow(I4) A=double(I) 转换为double类型 计算7个不变矩 [nc,nr]=size(A) [x,y]=meshgrid(1:nr,1:nc) 得到网格 x=x(:) y=y(:) A=A(:) m.m00=sum(A) if m.m00==0 m.m00=eps end m.m10=sum(x.*A) m.m01=sum(y.*A) 计算均值 xmean=m.m10/m.m00 ymean=m.m01/m.m00 计算中心矩(li9_23.rar cm.cm00=m.m00 cm.cm02=(sum((y-ymean).^2.*A))/(m.m00^2) cm.cm03=(sum((y-ymean).^3.*A))/(m.m00^2.5) cm.cm11=(sum((x-xmean).*(y-ymean).*A))/(m.m00^2) cm.cm12=(sum((x-xmean).*(y-ymean).^2.*A))/(m.m00^2.5) cm.cm20=(sum((x-xmean).^2.*A))/(m.m00^2) cm.cm21=(sum((x-xmean).^2.*(y-ymean).*A))/(m.m00^2.5) cm.cm30=(sum((x-xmean).^3.*A))/(m.m00^2.5) im(1)=cm.cm20+cm.cm02 im(2)=(cm.cm20-cm.cm02)^2+4*cm.cm11^2 im(3)=(cm.cm30-3*cm.cm12)^2+(3*cm.cm21-cm.cm03)^2 im(4)=(cm.cm30+cm.cm12)^2+(cm.cm21+cm.cm03)^2 im(5)=(cm.cm30-3*cm.cm12)*(cm.cm30+cm.cm12)... *((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)... +(3*cm.cm21-cm.cm03)*(cm.cm21+cm.cm03)... +(3*(cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2) im(6)=(cm.cm20-cm.cm02)*((cm.cm30+cm.cm12)^2-(cm.cm21+cm.cm03)^2)... +4*cm.cm11*(cm.cm30+cm.cm12)*(cm.cm21+cm.cm03) im(7)=(3*cm.cm21-cm.cm03)*(cm.cm30+cm.cm12)... *((cm.cm30+cm.cm12)^2-3*(cm.cm21+cm.cm03)^2)... +(3*cm.cm12-cm.cm30)*(cm.cm21+cm.cm03)... *()

matlab/simmulink中Selector模块各个选项的详细示例。只是一个小小的示例，想详细了解Selector的话可以看看，会熟练应用的大神可以无视了。(The matlab/simmulink Selector module options detailed example. Just a small example, would like to learn more about the Selector, then you can take a look at.)

本程序用来计算空心铜绕线圈（磁体）在液氮温度下的电阻，需要线圈结构，尺寸，导线截面等数据(This procedure is used to calculate the hollow copper winding coils (magnets) at liquid nitrogen temperature resistance, the coil structure, size, conductor cross-section and other data)

对于matlab中M文件的知识 针对怎样调用M文件以及一些使用方法的介绍 适合初学者当中对于M文件的使用有问题的读者(M file for matlab in the knowledge of how to call for the M file, and some introduction for beginners to use these files for M readers question the use of)

cofdm simulation graphs(5) 摘自９４年名家论文(cofdm simulation graphs (5) from the famous 94 theses)

自己画的SIMULINK仿真的三个PID控制，以供大家参考。(Use SIMULINK three PID control)