frequency colorfile

[Okke Batelaan]

Hi,
is there a program or did somebody write a script to create a frequency 
equalized colorfile?

best regards,

Okke Batelaan

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Okke Batelaan                       
Laboratory of Hydrology                    email: batelaan at hydr1.vub.ac.be 
Free University Brussels                   tel:   x-32-2-6293021 
Pleinlaan 2                                fax:   x-32-2-6293022
1050 BRUSSELS, BELGIUM
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