as_white_ref: Convert value to a tristimulus values normalised to Y=100
Description
This function can take either the name of a standardised illuminants, x
and y chromaticity coordinates or X, Y, and Z tristimulus values and converts
it to tristimulus values normalised to Y=100. All Illuminant series A-F are
supported and can be queried both on the CIE 1931 2<U+00B0> and CIE 1964 10<U+00B0>
chromaticity coordinates.
Usage
as_white_ref(x, fow = 2)
Arguments
x
A string giving the name of the standardized illuminant or a
2 (chromaticity) or 3 (trsitimulus) length numeric vector.
fow
The field-of-view for the illuminant - either 2 or 10