Coordinates for drawing the CIE1931 XYZ colorspace from above (née “Yxy”)

cieXYZ.py

#!/usr/bin/env python
# encoding: utf-8
"""
cieXYZ.py

Party like it's 1931.

Created by FI$H 2000 on 2011-04-18.
Copyright (c) 2011 OST, LLC. All rights reserved.

"""


coords = """
360, 0.175560, 0.005294, 0.819146
365, 0.175161, 0.005256, 0.819582
370, 0.174821, 0.005221, 0.819959
375, 0.174510, 0.005182, 0.820309
380, 0.174112, 0.004964, 0.820924
385, 0.174008, 0.004981, 0.821012
390, 0.173801, 0.004915, 0.821284
395, 0.173560, 0.004923, 0.821517
400, 0.173337, 0.004797, 0.821866
405, 0.173021, 0.004775, 0.822204
410, 0.172577, 0.004799, 0.822624
415, 0.172087, 0.004833, 0.823081
420, 0.171407, 0.005102, 0.823490
425, 0.170301, 0.005789, 0.823911
430, 0.168878, 0.006900, 0.824222
435, 0.166895, 0.008556, 0.824549
440, 0.164412, 0.010858, 0.824731
445, 0.161105, 0.013793, 0.825102
450, 0.156641, 0.017705, 0.825654
455, 0.150985, 0.022740, 0.826274
460, 0.143960, 0.029703, 0.826337
465, 0.135503, 0.039879, 0.824618
470, 0.124118, 0.057803, 0.818079
475, 0.109594, 0.086843, 0.803563
480, 0.091294, 0.132702, 0.776004
485, 0.068706, 0.200723, 0.730571
490, 0.045391, 0.294976, 0.659633
495, 0.023460, 0.412703, 0.563837
500, 0.008168, 0.538423, 0.453409
505, 0.003859, 0.654823, 0.341318
510, 0.013870, 0.750186, 0.235943
515, 0.038852, 0.812016, 0.149132
520, 0.074302, 0.833803, 0.091894
525, 0.114161, 0.826207, 0.059632
530, 0.154722, 0.805864, 0.039414
535, 0.192876, 0.781629, 0.025495
540, 0.229620, 0.754329, 0.016051
545, 0.265775, 0.724324, 0.009901
550, 0.301604, 0.692308, 0.006088
555, 0.337363, 0.658848, 0.003788
560, 0.373102, 0.624451, 0.002448
565, 0.408736, 0.589607, 0.001657
570, 0.444062, 0.554714, 0.001224
575, 0.478775, 0.520202, 0.001023
580, 0.512486, 0.486591, 0.000923
585, 0.544787, 0.454434, 0.000779
590, 0.575151, 0.424232, 0.000616
595, 0.602933, 0.396497, 0.000571
600, 0.627037, 0.372491, 0.000472
605, 0.648233, 0.351395, 0.000372
610, 0.665764, 0.334011, 0.000226
615, 0.680079, 0.319747, 0.000174
620, 0.691504, 0.308342, 0.000154
625, 0.700606, 0.299301, 0.000093
630, 0.707918, 0.292027, 0.000055
635, 0.714032, 0.285929, 0.000040
640, 0.719033, 0.280935, 0.000032
645, 0.723032, 0.276948, 0.000020
650, 0.725992, 0.274008, 0.000000
655, 0.728272, 0.271728, 0.000000
660, 0.729969, 0.270031, 0.000000
665, 0.731089, 0.268911, 0.000000
670, 0.731993, 0.268007, 0.000000
675, 0.732719, 0.267281, 0.000000
680, 0.733417, 0.266583, 0.000000
685, 0.734047, 0.265953, 0.000000
690, 0.734390, 0.265610, 0.000000
695, 0.734592, 0.265408, 0.000000
700, 0.734690, 0.265310, 0.000000
705, 0.734690, 0.265310, 0.000000
710, 0.734690, 0.265310, 0.000000
715, 0.734548, 0.265452, 0.000000
720, 0.734690, 0.265310, 0.000000
725, 0.734690, 0.265310, 0.000000
730, 0.734690, 0.265310, 0.000000
735, 0.734690, 0.265310, 0.000000
740, 0.734690, 0.265310, 0.000000
745, 0.734690, 0.265310, 0.000000
750, 0.734690, 0.265310, 0.000000
755, 0.734690, 0.265310, 0.000000
760, 0.734690, 0.265310, 0.000000
765, 0.734690, 0.265310, 0.000000
770, 0.734690, 0.265310, 0.000000
775, 0.734690, 0.265310, 0.000000
780, 0.734690, 0.265310, 0.000000
785, 0.734690, 0.265310, 0.000000
790, 0.734690, 0.265310, 0.000000
795, 0.734690, 0.265310, 0.000000
800, 0.734690, 0.265310, 0.000000
805, 0.734690, 0.265310, 0.000000
810, 0.734690, 0.265310, 0.000000
815, 0.734690, 0.265310, 0.000000
820, 0.734690, 0.265310, 0.000000
825, 0.734690, 0.265310, 0.000000
830, 0.734690, 0.265310, 0.000000
"""

"""
from colormath.color_objects import XYZColor
import StringIO, numpy, csv, sys


cie_xyz = []
commas = csv.reader(StringIO.StringIO(coords))

for xx in commas:
    cie_xyz.append(tuple(xx))


cie = numpy.matrix(cie_xyz[1:])

map(lambda r: (r[0], XYZColor(*r[1:])), cie.tolist())

cieXYZ = cie.T[1:].astype(float).T
cieYxy = numpy.array([cieXYZ.T[0].flatten(), cieXYZ.T[1].flatten()]).T
cieYxy2 = numpy.apply_along_axis(lambda c: c[0], 1, cieYxy)

cieYxy3 = cieYxy2.tolist()
"""

cieYxy3 = [[0.17556,0.00529],[0.17516,0.00526],[0.17482,0.00522],[0.17451,0.00518],[0.17411,0.00496],[0.17401,0.00498],[0.1738,0.00492],[0.17356,0.00492],[0.17334,0.0048],[0.17302,0.00478],[0.17258,0.0048],[0.17209,0.00483],[0.17141,0.0051],[0.1703,0.00579],[0.16888,0.0069],[0.1669,0.00856],[0.16441,0.01086],[0.1611,0.01379],[0.15664,0.0177],[0.15098,0.02274],[0.14396,0.0297],[0.1355,0.03988],[0.12412,0.0578],[0.10959,0.08684],[0.09129,0.1327],[0.06871,0.20072],[0.04539,0.29498],[0.02346,0.4127],[0.00817,0.53842],[0.00386,0.65482],[0.01387,0.75019],[0.03885,0.81202],[0.0743,0.8338],[0.11416,0.82621],[0.15472,0.80586],[0.19288,0.78163],[0.22962,0.75433],[0.26578,0.72432],[0.3016,0.69231],[0.33736,0.65885],[0.3731,0.62445],[0.40874,0.58961],[0.44406,0.55471],[0.47878,0.5202],[0.51249,0.48659],[0.54479,0.45443],[0.57515,0.42423],[0.60293,0.3965],[0.62704,0.37249],[0.64823,0.3514],[0.66576,0.33401],[0.68008,0.31975],[0.6915,0.30834],[0.70061,0.2993],[0.70792,0.29203],[0.71403,0.28593],[0.71903,0.28094],[0.72303,0.27695],[0.72599,0.27401],[0.72827,0.27173],[0.72997,0.27003],[0.73109,0.26891],[0.73199,0.26801],[0.73272,0.26728],[0.73342,0.26658],[0.73405,0.26595],[0.73439,0.26561],[0.73459,0.26541],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73455,0.26545],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531],[0.73469,0.26531]]



if __name__ == '__main__':
    from imagekit.utils import json
    
    print "YO DOGG:"
    print json.dumps(cieXYZ.tolist())
    print ""
    
    #print "I HEARD YOU LIKE HISTORICALLY SIGNIFICIANT ABSTRACT COLORSPACE DEFINITIONS:"
    #print cieYxy
    print ""
    
    print "SO WE PUT SOME RGB IN YOUR XYZ SO YOU CAN OBSERVE WHILE YOU OBSERVE."
    print json.dumps(cieYxy2.tolist())
    print ""
    
    sys.exit(0)

A useful background PNG:

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