Query the Official XYZ values for Standard Illuminants
In careful calcuations, it is sometime helpful to have the 'official' values of XYZ, i.e. with the right number of decimal places.
a subvector of
All XYZ values are taken from the ASTM publication in References,
B which is taken from Wyszecki & Stiles
D50.ICC which is taken from ICC publications.
The latter is different than that of ASTM.
An Mx3 matrix where M is the length of
Each row filled with the official XYZ, but if the illuminant name is not recognized the row is all
rownames are set to
The input names are case-sensitive.
The output XYZ is normalized so that
ASTM E 308 - 01. Standard Practice for Computing the Colors of Objects by Using the CIE System. (2001).
Günther Wyszecki and W. S. Stiles. Color Science: Concepts and Methods, Quantitative Data and Formulae, Second Edition. John Wiley & Sons, 1982. Table I(3.3.8) p. 769.
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