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 Author Comment/Response Alex 03/18/13 07:36am Hello, Could you please help me with the following question. I am using the function RegionPlot3D to illustrate a convex set in 3 dimensions (x1,x2,x3). I works fine. For example: RegionPlot3D[ K1 <= -1 && K2 <= -1.5 && K3 <= -2.5 && -10 - K1 - K2 - K3 <= -4 && K1 + K2 <= -3 && K1 + K3 <= -4 && K2 + K3 <= -4 && K1 + K2 + K3 <= -5.5, {K1, -2.5, 0}, {K2, -2.5, -1}, {K3, -4, -2}, AxesLabel -> Automatic, PlotStyle -> Opacity[1], PlotPoints -> 100, PerformanceGoal -> "Quality"] Additionally, I would like to mark an area of the 3d space, say where x1<=x2<=x3, with a light color, so that it is transparent. So, I would like to see graphically: - my previous convex set - the area where x1<=x2<=x3 By turning and zooming this figure, I would like to see graphically, which part of my convex set satisfies the condition x1<=x2<=x3. I would really appreciate any solution to this problem, but the best way would be if I could give a matrix of the following form as input: A= 0 -1 1 -1 1 0 b= 0 0 Ax>=b which means: x3-x2>=0 x2-x1>=0 If the above inequalities are satisfied, then the condition x1<=x2<=x3 is also satisfied. Thank you very much for your time and consideration! Alex URL: ,

 Subject (listing for '3d plot - mark specific area with another color') Author Date Posted 3d plot - mark specific area with another color Alex 03/18/13 07:36am Re: 3d plot - mark specific area with another c... toen 03/24/13 00:22am
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