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MathGroup Archive 2005

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Re: Question about Plotting with boundary constriants

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58232] Re: [mg58225] Question about Plotting with boundary constriants
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Fri, 24 Jun 2005 02:49:51 -0400 (EDT)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

Needs["Graphics`"];

f[x_,y_] := Sin[3x+2y];

DisplayTogetherArray[
    {{InequalityPlot[{0<=x<=1,0<=y<=1-x}, 
          {x, -0.25, 1.25}, {y, -0.25, 1.25},
          PlotRange->{{-0.25,1.25}, {-0.25,1.25}},
          Frame->True,Axes->False],
        Plot3D[f[x,y], {x,-0.25,1.25},{y,-0.25,1.25}]},
      {Plot3D[f[x,y]*Boole[0<=x<=1&&0<=y<=1-x], 
          {x,-0.25,1.25}, {y,-0.25,1.25}]}},
    ImageSize->432];


Bob Hanlon

> 
> From: HUAFANG CUI <huafangc at seas.upenn.edu>
To: mathgroup at smc.vnet.net
> Date: 2005/06/23 Thu AM 05:34:09 EDT
> Subject: [mg58232] [mg58225]  Question about Plotting with boundary constriants
> 
> Hi,
> 
> I have a question about plotting a 3d graph with some boundary 
constraints.
> 
> for example,
> 
> feasible area of function f(x, y) is 0 <= x <= 1 and 0 <= y <= 1-x.
> 
> Thanks alot.
> 
> HC
> 
> 


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