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Drawing multiple curves with ParametricPlot3D


  • To: mathgroup@smc.vnet.net
  • Subject: [mg10539] Drawing multiple curves with ParametricPlot3D
  • From: "Volker Doerr" <vd@cascade.de>
  • Date: Tue, 20 Jan 1998 02:23:25 -0500
  • Organization: Cascade Informationssysteme GmbH


Hello to all, 

I want to display two curves from six InterpolatingFunctions 

  {r1x[t], r1y[t], r1z[t], r2x[t], r2y[t], r2z[t]} 

produced with NDSolve. The documentation describes the  usage of
ParametricPlot3D for displaying one curve:

  ParametricPlot3D[{fx,fy,fz},{t,tmin,tmax}]

and this works fine for me:

  ParametricPlot3D[Evaluate[{r1x[t],r1y[t],r1z[t]}/.%],{t,0,dt}]

For plotting several objects together,  the documentation says:

  ParametricPlot3D[{{fx,fy,fz},{gx,gy,gz},...},...]

but

  ParametricPlot3D[
    {Evaluate[{r1x[t],r1y[t],r1z[t]}/.%],
     Evaluate[{r2x[t],r2y[t],r2z[t]}/.%],{t,0,dt}},{t,0,dt}]

doesn't work at all. I tried to vary this expression in many (also
stupid) ways, without any result. What's wrong with it?

Thanks a lot, 

V o l k e r
vs@cascade.de




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