How can i find out a color's dominant wavelength?

[Edwardlin-zlt]

since I've got a color's CIE-XYZ coordinate, and I try to find out its dominant wavelength.
can I achieve that by this module?

[Ron024]

Yes, please see dominant wavelength. <https://colour.readthedocs.io/en/latest/generated/colour.dominant_wavelength.html#colour.dominant_wavelength>

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On Tue, Feb 20, 2018 at 8:20 AM, Edward Amons ***@***.***> wrote: since I've got a color's CIE-XYZ coordinate, and I try to find out its dominant wavelength. can I achieve that by this module? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#386>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AB1UgovdUNHN9rWf8J8JA8-ZzKFb-Kxuks5tWsaHgaJpZM4SL8D_> .

[KelSolaar]

Hi @Edwardlin-zlt,

Yes, as @Ron024 said this is performed with the definition he linked. Typical usage is as follows:

>>> import colour
>>> xy = [0.26415, 0.37770]
>>> xy_n = [0.31270, 0.32900]
>>> colour.dominant_wavelength(xy, xy_n)
(array(504.0),
 array([ 0.00369694,  0.63895775]),
 array([ 0.00369694,  0.63895775]))

[Edwardlin-zlt]

Thanks~
You guys done a wonderful job~

[KelSolaar]

Cheers and you are welcome @Edwardlin-zlt !