[R] plotting CIE chromaticity diagram?

Ken Knoblauch ken.knoblauch at inserm.fr
Mon Mar 18 11:54:34 CET 2013


ishi soichi <soichi777 <at> gmail.com> writes:
> Has anyone plotted or is it possible to plot
> 
> CIE *xy* chromaticity diagram
> 
> http://en.wikipedia.org/wiki/File:CIE1931xy_blank.svg
> 
> I need this plot in color.
> 
> ishida
> 

I think that plotting the spectral locus and the line of purples is trivial, 
but that's not actually what you are asking.  Though filling in the interior 
with a color gradient would be a challenging and interesting problem, 
there are those who would consider this a misguided attempt at 
representation (even though it is frequently done) as the CIE coordinates 
provide no information on color appearance, per se.  
They specify what lights look alike, not what they look like.

-- 
Kenneth Knoblauch
Inserm U846
Stem-cell and Brain Research Institute
Department of Integrative Neurosciences
18 avenue du Doyen Lépine
69500 Bron
France
tel: +33 (0)4 72 91 34 77
fax: +33 (0)4 72 91 34 61
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http://www.sbri.fr/members/kenneth-knoblauch.html



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