> For an example, what would the data values be to build a simple four-sided
> pyramid shape?

Is this a pyramid?
////////////////////////////////////////////////
#version unofficial MegaPov 0.6;

#declare S=3; // data sample sizes
#declare myDataArray2=array[S][S]{
 {-2,-2,-2},
 {-2, 1,-2},
 {-2,-2,-2}
}

#declare myDataFunction2 =
function{ "data_2d_1", <1> library "i_dat3d", myDataArray2, <S,1,S>}

isosurface {
     function {(myDataFunction2)}
     contained_by { box {<0,0,0>, <2,2,2>}}
     threshold 0
     max_gradient 4
     pigment{rgb<1,0,0>}

     scale 4
}

camera { location <10, 10, 10> look_at <0,0,0>}

light_source {<10, 120, 150> color 1}

background {color .3}
////////////////////////////////////////////////

"janger" <d_j### [at] hotmailcom> wrote in message
news:3a03bcf0@news.povray.org...
> Anyone help me with generating heightfields using MegaPov and the built-in
> i_dat3d library routines?
> I have no idea how the data points are mapped. I've read the megapov help,
> and it doesn't make it clear to me. Sample data files give me unexpected
> results.
> I've searched the pov site, the net, my mind... just can't make sense of
it
> all.
> For an example, what would the data values be to build a simple four-sided
> pyramid shape?
>
>

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