Re: ParamtricPlot3D

*To*: mathgroup at smc.vnet.net*Subject*: [mg32132] Re: ParamtricPlot3D*From*: Ronald Bruck <bruck at math.usc.edu>*Date*: Sat, 29 Dec 2001 00:46:52 -0500 (EST)*References*: <a0h7np$spj$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Have you tried the add-on MathGL3D? <http://phong.informatik.uni-leipzig.de/~kuska/mathgl3dv3/index.htm> Speaking of which, does anybody know if there's going to be a version of this for Mac OS X? --Ron Bruck In article <a0h7np$spj$1 at smc.vnet.net>, Erich Neuwirth <erich.neuwirth at univie.ac.at> wrote: > 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