[pstricks] contour

[Herbert Voss]

cyrille Piatecki wrote:
> Thanks for your answer but before your intervention I have a graph and 
> now nothing due to a postscript error.
>   
do you have the correct data file?

> Secondly, I would like tu use massively contour plot for a book and it 
> would be nice if I can have a contour sty because I dont understand the 
> options --- can I change easely the colors.... --- and I dont know how 
> to take the code out of the exemple.
>   
the z coordinate is normalized to the interval 0...1. this value is then

 \if at colored 400 mul 380 add tx at addDict begin wavelengthToRGB

converted to a wavelength of the interval 380..780 nm and again
converted to RGB. This may be changed for your needs.

Herbert