Parameterdarstellung

x=f(u,v),y=g(u,v),z=h(u,v), u \in [u_0..u_1], v \in[v_0..v_1] , z.B. Kugel:

> plot3d([cos(v)*sin(u),cos(v)*cos(u),sin(v)],u=0..Pi,v=0..2*Pi,scaling=constrained, axes=boxed,orientation=[65,50]);

> plot3d([cos(u)*sin(v),cos(v)*cos(u),sin(v)],u=0..Pi,v=0..2*Pi,axes=frame,orientation=[50,60]);