%色彩的渲染
clf;echo on
x=-6:0.4:6;y=x;
[x,y]=meshgrid(x,y);
r=sqrt(x.^2+y.^2)+eps;
z=sin(r)./r;
surf(z);colormap(hsv);
shading flat
pause
figure(2)
surf(z);%colormap(hsv);
colormap(copper);
shading interp;

pause
figure(3)
surf(z);colormap(hsv);
shading faceted;

echo off