窗口移动多项式平滑演示程序.txt

窗口移动多项式平滑演示程序。。。二维数据模拟程序

%singnal simulation 
: x=-3:0.1:2; 
: y=x.^2+x-1+1.5*rand(1,length(x)); 
: width=7;degree=2; 
: %smooth with SG method 
: ynew=smooth(y,width,'sgolay',degree); 
: ................... 



%singnal simulation 
x=-3:0.1:2; 
y=x.^2+x-1+1.5*rand(1,length(x)); 
width=7;degree=2; 
%smooth with SG method 
ynew=smooth(y,width,'sgolay',degree); 
% plot 
figure;plot(x,y,'b+');hold on;plot(x,ynew,'r'); 



%%% 拷贝以上内容，在matlab下运行即可％％％