L5.html

Surfaces in spherical coordinates (examples)

> plot3d(sin(y)*(sin(2*x))^2, x=0..2*Pi, y=0..Pi, coords=spherical, grid=[100,50],style=patch);

> plot3d(max(-cos(2*y),0)*(sin(2*x))^2+max(cos(2*y),0), x=0..2*Pi, y=0..Pi, coords=spherical, grid=[100,50],style=patch);

> plot3d(cos (4*x)*cos(4*y), x=0..2*Pi, y=0..Pi, coords=spherical, grid=[100,50],style=patch);

> plot3d(max(cos (4*x)*cos(4*y),0), x=0..2*Pi, y=0..Pi, coords=spherical, grid=[100,50],style=patch);