Re: Stacking Graphics
- To: mathgroup at smc.vnet.net
- Subject: [mg13342] Re: [mg13245] Stacking Graphics
- From: "Jens-Peer Kuska" <kuska at linmpi.mpg.de>
- Date: Mon, 20 Jul 1998 02:49:59 -0400
- Sender: owner-wri-mathgroup at wolfram.com
Hi Eric,
the combination of a 3d surface with a contour plot will probably not
work. The reason are the polygons of the contour plot. The polygons in
the contour graphics are non-convex, in 2d this does not matter but the
3d extension fails
because Mathematica can not render 3d non-convex polygons.
If You need the color information You must combine a density graphics
with your 3d surface. You can look to the ShadowPlot3D[] function from
Graphics`Graphics3D.
If the lines of the contour plot are sufficient You may try something
like
(* Make a surface ...*)
surf=Plot3D[Sin[x*y],{x,0,Pi},{y,0,Pi}];
(* and a ContourPlot *)
cntr=ContourPlot[Cos[x*y],{x,0,Pi},{y,0,Pi}]
(* Define the height position of the contour lines *) zpos=-3.5;
cgraph=Show[{
Graphics3D[surf], (* make a 3d graphics form the surface *)
Graphics3D[
First[Graphics[cntr]] /.{ p_Polygon :> Sequence[], (* make a 2d
graphics from the
ContourGraphics and remove the polygons *)
Line[pnts_]:> Line[Append[#,zpos] & /@ pnts]}]} (* extend
the 3d lines to 3d *)
]
Hope that helps
Jens
-----Original Message-----
From: Eric R. Bittner <bittner at UH.EDU> To: mathgroup at smc.vnet.net
Subject: [mg13342] [mg13245] Stacking Graphics
>Dear FellowMathGroupers:
>
>I need to combine a three dimensional list plot of a one set of data
>with a contour plot of another set of data. Is there a relatively
>straight forward to do this?
>
>Cheers!
>ERB
>--
>Eric R. Bittner bittner at uh.edu Dept. of Chemistry
>ph: 713-743-2775 University of Houston fax: 713-743-2709
>Houston TX 77204 http://k2.chem.uh.edu/bittner/
> "confutatis maledictis, flammis acribus addictis..."
>
>