-
inpaint_nans
缺失数据的填补函数,用来估计缺失的数据。
single and mutiple imputation(Solves approximation to one of several pdes to interpolate and extrapolate holes in an array
)
- 2020-07-04 05:40:02下载
- 积分:1
-
cluster-codes
there are some clustering codes of matlab.
- 2011-06-05 11:22:07下载
- 积分:1
-
li9_23
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)...
*()
- 2010-10-17 21:53:14下载
- 积分:1
-
RAYLEIGH
matlab 编的瑞利信道仿真源码,对研究信道很有用(hgajdjkjhakhdkhakjlkjlka)
- 2010-01-17 20:47:43下载
- 积分:1
-
TechniquesofModelBasedControl-Softwarefordesignand
设计调整MIMO系统的控制软件,适合链路级平台所使用(design adjustments MIMO system control software, link-level platform suitable for use)
- 2007-01-10 16:40:52下载
- 积分:1
-
finite_element_method_with_MATLAB
使用MATLAB语言编写的有限元程序,是对[Programming_the_Finite_Element】中Fortran语言的MATLAB语言重写(Use MATLAB language finite element program is [Programming_the_Finite_Element MATLAB language] in Fortran language rewrite)
- 2014-12-17 23:58:45下载
- 积分:1
-
sze
Jerk混沌系统产生的模拟信号转化为二进制的方法 程序可以正常运行(Jerk chaotic system analog signal into a binary approach generated program works)
- 2015-04-01 15:58:05下载
- 积分:1
-
greyrelation
本函数主要用于计算两个参考数列与待测矩阵之间灰色关联度,返回值为综合关联度
综合关联度系数设默认为0.5(This function is mainly used to calculate the gray correlation between the number of columns and the two reference test matrix, the return value is the comprehensive correlation degree overall correlation coefficient of 0.5 set by default)
- 2014-12-07 13:58:17下载
- 积分:1
-
Elm_KElm
Elm和KernelElm算法matlab实现,带有详细注释,并且提供了UCI数据集多个数据库供测试(Elm and Kelm algorithm, with detailed notes, and provides multiple UCI data set for testing)
- 2021-04-24 09:48:47下载
- 积分:1
-
chaos-time
混沌吸引子的MATLAB程序的实现,在这个基础上可以去掉前面的暂态点,调整视角,全方位地观察混沌吸引子的几何结构。(Chaotic attractor MATLAB program implementation, on this basis can be removed in front of the transient point, adjust the viewing angle in all directions to observe the geometry of chaotic attractors.)
- 2009-09-23 19:00:13下载
- 积分:1