Am 26.11.2016 um 17:13 schrieb Mike Horvath:
> How do you plot this horseshoe shape? Is the diagram plotted in CIE XYZ
> or CIE xyY color space?
It can be considered a plot of CIE xyY at some arbitrary unity Y.
Alternatively, it can be considered a plot of the slice X+Y+Z=1 of the
CIE XYZ colour space projected onto the XY plane.
> How do you tell if a point is inside or outside
> this curve?
By comparing against empirically established tables. There's no way
around that.
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