ppmcie
Draw a CIE color chart as a PPM image.
TLDR
Draw a CIE color chart using the REC709 color system as a PPM image
$ ppmcie > [path/to/output.ppm]
Specify the color system to be used
$ ppmcie -[cie|ebu|hdtv|ntsc|smpte] > [path/to/output.ppm]
Specify the location of the individual illuminants
$ ppmcie -[red|green|blue] [xpos ypos] > [path/to/output.ppm]
Do not dim the area outside the Maxwell triangle
$ ppmcie -full > [path/to/output.ppm]
