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Re: [Q] CountorPlot as part of 3D Plot

  • To: mathgroup at
  • Subject: [mg4353] Re: [Q] CountorPlot as part of 3D Plot
  • From: Harald Berndt <haraldb at>
  • Date: Thu, 11 Jul 1996 01:01:29 -0400
  • Organization: University of California Forest Prodcts Lab
  • Sender: owner-wri-mathgroup at

Gerd Lanfermann wrote:

> problem: i want to display a 3d plot, of lets say saddle, using
> Plot3D.
> I also want to to include a colored contour plot of this saddle  ON THE
> BOTTOM of the 3D-box, that matches the 3d plot.
> So far I cannot convert a -ContourGraphics- to a -Graphics3D- >object.

I figure that a Graphics3D object needs to have 3D coordinates for its 
objects, so your approach is unlikely to work. You'll probably need to 
do some massaging of the 2D objects and render the 
lines/points/polygons as primitives, say in an Epilog. The general 
idea is (1) extract the graphics primitives from your 2D plot (2) map 
all your {x, y} coordinates into {x, y, z} coordinates with something 
like {youListOfGraphicsPrimitives}//.{x_, y_}:>{x, y, z}.

Harald Berndt,                                University of California
Research Specialist                         Forest Products Laboratory

Phone:	510-215-4224                                FAX:			510-215-4299


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