[proFit-list] Color coding in ProFit scripts

[Jan Lagerwall]

Greetings,

I'm trying to program an optics script where the data are plotted in  
real color (for the interested, I want to have ProFit produce a Michel- 
Levy birefringence color chart) but I have some trouble getting from  
light wavelength to the corresponding R,G,B-values that I should send  
to SetLineColor. I found a quite simple algorithm at http://www.efg2.com/Lab/ScienceAndEngineering/Spectra.htm 
  but this first of all produces only 8-bit color, so the greater  
color depth of ProFit isn't used, second, the results aren't  
completely convincing. This is in particular because I need to mix the  
colors (I am running a loop over wavelengths, calculating the  
intensity for each color from 380nm to 780nm, and then summing the  
corresponding RGB values together, obviously normalizing the result  
before plotting).

Does anyone have any experience in getting from light wavelength to  
RGB and how to program color mixing? While my current script is an OK  
first approximation, any help to further improve it would be greatly  
appreciated.

Thanks
Jan