Anthony D. Baye wrote:
> Absolutely
> 
> You can turn your pigment into a function
> 
> #declare myPigFn =
> function {
>     pigment { my_pigment ]
>     }
> 
> and pass it directly to the height field as a function
> 
> height_field {
>     function HF_Res_X, HF_Res_Z { myPigFn(x,y,z).red * vScale }
>     water_level n.n
>     }
> 
> ".red" specifies that the height data follows the intensity of the red 
> channel.  Alternatively you may use the blue or green channels or any of 
> the direction vectors (x,y,z)
> 
> Numerical functions can also be used, but do not require the vector 
> component.
> 
> remember that height_fields occupy a unit cube from 0,0,0 to 1,1,1.
> 
> Regards,
> 
> A.D.B.

I get the error:

"Parse Error: Expected 'numeric expression', undeclared identifier 
'HF_Res_X' found instead"

-Mike

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