ParamtricPlot3D
- To: mathgroup at smc.vnet.net
- Subject: [mg32119] ParamtricPlot3D
- From: Erich Neuwirth <erich.neuwirth at univie.ac.at>
- Date: Fri, 28 Dec 2001 02:41:34 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
when displaying s sphere with
ParametricPlot3D[{Sin[u]*Cos[v],Cos[u]*Cos[v],Sin[v]},{u,-Pi,Pi},{v,-Pi,Pi}]
the resultig display does NOT have a convex surface.
and so does
ParametricPlot3D[{Sin[u]*Sin[v],Cos[u]*Sin[v],Cos[v]},{u,-Pi,Pi},{v,-Pi,Pi}]
in the second case, in the horizontal crosscuts
ther points go "in and out", one is close, ons is farther next is closer
...
to the center.
since i want to create 3d objects in other programs,
this is not good.
setting PlotPoints higher
does not completely solve the problem.
is there an easy solution?
--
Erich Neuwirth, Computer Supported Didactics Working Group
Visit our SunSITE at http://sunsite.univie.ac.at
Phone: +43-1-4277-38624 Fax: +43-1-4277-9386