Hi,

I've been trying to display isosurface(s) from 3D data from a user specified
input file but with little success so far.

I've found the following solution:

#declare FUN = function {"data_3D_3",
     < LEVSCALE>, library "i_dat3d","input.dat",<NX+1,NY+1,NZ+1,0>}

 isosurface {
       function{FUN}
       bounded_by{box{<0,0,0>, <NX,NY,NZ>}}
       threshold -1
       max_gradient 1.000
       eval
       texture { pigment {color rgbt <1.0,0.20,0.0,0.8>} }
 }

where "input.dat" is the use specified file. This does not work (there is an
error message) and I suspect it might be because it is not in the standard
distribution of povray. Is that correct? Do you see any way to solve this
problem?

Thanks for your help,

Vincent

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