go.m

matlab里面的一些经典的例子程序

tail=[0 5 8 66]; 
z=sum(real(E).^2,2);
[y ind]=sort(z);
newE=E(ind,:);
for i=1:4,
   Z2(i,:)=sum((real(newE(1:400-tail(i),:)).^2))/(400-tail(i));
end
semilogy(Z2')