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List:       freebsd-questions
Subject:    [solved] [OT] Light frequency or wavelength to (eg RGB) colour
From:       Ian Smith <smithi () nimnet ! asn ! au>
Date:       2015-12-30 16:40:18
Message-ID: 20151231033050.R8562 () sola ! nimnet ! asn ! au
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On Wed, 30 Dec 2015 08:49:41 -0700, Warren Block wrote:
 > On Thu, 31 Dec 2015, Ian Smith wrote:
 > 
 > > does anyone know of a method - preferably a formula - for converting
 > > known frequencies (or complementarily, their wavelengths) within the
 > > visible spectrum to its colour rendition in RGB, CMYK or whatever?
 > 
 > http://stackoverflow.com/questions/1472514/convert-light-frequency-to-rgb
 > 
 > The first answer supplies as many formulas as anyone might want.  Scroll down
 > and there is a Pascal routine to actually do the conversion.

Thanks Warren .. indeed that leads into quite a number of rabbit holes.

Thanks also to Roland Smith who sent me offlist (due to OT :) a link to 
his neat rendition in Python from apparently the same Pascal code:

https://github.com/rsmith-nl/wavelength_to_rgb

Thanks again folks; much easier than I thought this was going to be.

cheers, Ian
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