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Question: Color density or schemes in 3D

Question:Color density or schemes in 3D

Don_Caraota 150 Maple
color 3d plotting
May 31 2023
3

Hello, I have a simple question, yet I haven't find a plot command to do what I intend to:

I have a scalar field (density), as rho:=-4*x+4*y+4*z+3.

What I want to do is plot this density (using color gradients) on a cube, this is x=0..4, y=0..4 and z=0..4.
The color gradient would be something like from blue to red, including (maybe) some other colors in between.

I suppose this would provide me a cube with some colors schemes al over its faces.

Is there a plot command to do this, for 2D there is densityplot, but I have failed to find a 3D equivalent.

Thank you very much!
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