colour.xy_to_XYZ¶

colour.xy_to_XYZ(xy)[source]¶

Returns the CIE XYZ tristimulus values from given xy chromaticity coordinates.

Parameters:	xy (array_like) – xy chromaticity coordinates.
Returns:	CIE XYZ tristimulus values.
Return type:	ndarray

Notes

Domain	Scale - Reference	Scale - 1
`xy`	[0, 1]	[0, 1]

Range	Scale - Reference	Scale - 1
`XYZ`	[0, 1]	[0, 1]

References

Examples

>>> xy = np.array([0.54369557, 0.32107944])
>>> xy_to_XYZ(xy)  # doctest: +ELLIPSIS
array([ 1.6933366...,  1.        ,  0.4211574...])