8Â¥: Originally posted by zhuofp13 at 2015-02-02 12:04:29
ÈÊÐÖ  
=meshgrid(linspace(0,pi,50),linspace(0,2*pi,50));
z=cos(theta);
x=sin(theta).*cos(phi);
y=sin(theta).*sin(phi);
f=-1*((x.*y).^2+(y.*z).^2+(z.*x).^2);
surf(sin(theta).*cos(phi).f,sin(the ...