web.465591f08831d8d748edb2090@news.povray.org...
> Hi,
>
> I'm trying to use povray to display some scientific data. I have the
> concentration of a drug (as its released from a nanoparticle) as a 
> function
> of x,y and z coordinates.

Why not an objet the shape and the size that fits to your function display 
(a box, a sphere...) with a material of that kind :



material{
   texture
         {
            pigment
            {
               color rgbt 1 // transparent object surface
            }
         }
         interior
         {
            media
            {
               emission rgb 1// any color you want
               density
               {
                  function{max(0,1-(x*x+y*y+z*z))} // your function as a 
density pattern here (the example is a spherical pattern)
               }
            }
         }
}



Marc

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