我正在尝试在 tikZ 中制作色度图，有人知道如何制作吗？
我要这个
我的问题不在于形成我可以做的光谱轨迹，现在我只使用三个点，但我试图为图表着色。有人有什么指点吗，或者他们以前做过这个吗？
另外，是的，我知道色度图不应该被着色，因为我们的显示器无法产生完整的图表等等。因此，色彩科学 101 放在一边。
Matlab 代码制作轨迹的形状
cie.lambda = [380:5:780];
%load CIE color matching data
cie.cmf2deg = 1.0e+02 * [3.800000000000000 0.000013680000000 0.000000390000000 0.000064500000000;
3.850000000000000 0.000022360000000 0.000000640000000 0.000105500000000;
3.900000000000000 0.000042430000000 0.000001200000000 0.000200500000000;
3.950000000000000 0.000076500000000 0.000002170000000 0.000362100000000;
4.000000000000000 0.000143100000000 0.000003960000000 0.000678500000000;
4.050000000000000 0.000231900000000 0.000006400000000 0.001102000000000;
4.100000000000000 0.000435100000000 0.000012100000000 0.002074000000000;
4.150000000000000 0.000776300000000 0.000021800000000 0.003713000000000;
4.200000000000000 0.001343800000000 0.000040000000000 0.006456000000000;
4.250000000000000 0.002147700000000 0.000073000000000 0.010390500000000;
4.300000000000000 0.002839000000000 0.000116000000000 0.013856000000000;
4.350000000000000 0.003285000000000 0.000168400000000 0.016229600000000;
4.400000000000000 0.003482800000000 0.000230000000000 0.017470600000000;
4.450000000000000 0.003480600000000 0.000298000000000 0.017826000000000;
4.500000000000000 0.003362000000000 0.000380000000000 0.017721100000000;
4.550000000000000 0.003187000000000 0.000480000000000 0.017441000000000;
4.600000000000000 0.002908000000000 0.000600000000000 0.016692000000000;
4.650000000000000 0.002511000000000 0.000739000000000 0.015281000000000;
4.700000000000000 0.001953600000000 0.000909800000000 0.012876400000000;
4.750000000000000 0.001421000000000 0.001126000000000 0.010419000000000;
4.800000000000000 0.000956400000000 0.001390200000000 0.008129500000000;
4.850000000000000 0.000579500000000 0.001693000000000 0.006162000000000;
4.900000000000000 0.000320100000000 0.002080200000000 0.004651800000000;
4.950000000000000 0.000147000000000 0.002586000000000 0.003533000000000;
5.000000000000000 0.000049000000000 0.003230000000000 0.002720000000000;
5.050000000000000 0.000024000000000 0.004073000000000 0.002123000000000;
5.100000000000000 0.000093000000000 0.005030000000000 0.001582000000000;
5.150000000000000 0.000291000000000 0.006082000000000 0.001117000000000;
5.200000000000000 0.000632700000000 0.007100000000000 0.000782500000000;
5.250000000000000 0.001096000000000 0.007932000000000 0.000572500000000;
5.300000000000000 0.001655000000000 0.008620000000000 0.000421600000000;
5.350000000000000 0.002257500000000 0.009148500000000 0.000298400000000;
5.400000000000000 0.002904000000000 0.009540000000000 0.000203000000000;
5.450000000000000 0.003597000000000 0.009803000000000 0.000134000000000;
5.500000000000000 0.004334500000000 0.009949500000000 0.000087500000000;
5.550000000000000 0.005120500000000 0.010000000000000 0.000057500000000;
5.600000000000000 0.005945000000000 0.009950000000000 0.000039000000000;
5.650000000000000 0.006784000000000 0.009786000000000 0.000027500000000;
5.700000000000000 0.007621000000000 0.009520000000000 0.000021000000000;
5.750000000000000 0.008425000000000 0.009154000000000 0.000018000000000;
5.800000000000000 0.009163000000000 0.008700000000000 0.000016500000000;
5.850000000000000 0.009786000000000 0.008163000000000 0.000014000000000;
5.900000000000000 0.010263000000000 0.007570000000000 0.000011000000000;
5.950000000000000 0.010567000000000 0.006949000000000 0.000010000000000;
6.000000000000000 0.010622000000000 0.006310000000000 0.000008000000000;
6.050000000000000 0.010456000000000 0.005668000000000 0.000006000000000;
6.100000000000000 0.010026000000000 0.005030000000000 0.000003400000000;
6.150000000000000 0.009384000000000 0.004412000000000 0.000002400000000;
6.200000000000000 0.008544500000000 0.003810000000000 0.000001900000000;
6.250000000000000 0.007514000000000 0.003210000000000 0.000001000000000;
6.300000000000000 0.006424000000000 0.002650000000000 0.000000500000000;
6.350000000000000 0.005419000000000 0.002170000000000 0.000000300000000;
6.400000000000000 0.004479000000000 0.001750000000000 0.000000200000000;
6.450000000000000 0.003608000000000 0.001382000000000 0.000000100000000;
6.500000000000000 0.002835000000000 0.001070000000000 0;
6.550000000000000 0.002187000000000 0.000816000000000 0;
6.600000000000000 0.001649000000000 0.000610000000000 0;
6.650000000000000 0.001212000000000 0.000445800000000 0;
6.700000000000000 0.000874000000000 0.000320000000000 0;
6.750000000000000 0.000636000000000 0.000232000000000 0;
6.800000000000000 0.000467700000000 0.000170000000000 0;
6.850000000000000 0.000329000000000 0.000119200000000 0;
6.900000000000000 0.000227000000000 0.000082100000000 0;
6.950000000000000 0.000158400000000 0.000057230000000 0;
7.000000000000000 0.000113590000000 0.000041020000000 0;
7.050000000000000 0.000081110000000 0.000029290000000 0;
7.100000000000000 0.000057900000000 0.000020910000000 0;
7.150000000000000 0.000041090000000 0.000014840000000 0;
7.200000000000000 0.000028990000000 0.000010470000000 0;
7.250000000000000 0.000020490000000 0.000007400000000 0;
7.300000000000000 0.000014400000000 0.000005200000000 0;
7.350000000000000 0.000010000000000 0.000003610000000 0;
7.400000000000000 0.000006900000000 0.000002490000000 0;
7.450000000000000 0.000004760000000 0.000001720000000 0;
7.500000000000000 0.000003320000000 0.000001200000000 0;
7.550000000000000 0.000002350000000 0.000000850000000 0;
7.600000000000000 0.000001660000000 0.000000600000000 0;
7.650000000000000 0.000001170000000 0.000000420000000 0;
7.700000000000000 0.000000830000000 0.000000300000000 0;
7.750000000000000 0.000000590000000 0.000000210000000 0;
7.800000000000000 0.000000420000000 0.000000150000000 0;];
cie.illE = ones(length(cie.lambda),1); %equal energy illuminant
%Interpolate data to specifed range
interpMethod = 'linear';
cie.cmf2deg = interp1(cie.cmf2deg(:,1),cie.cmf2deg(:,2:end),cie.lambda(:),interpMethod);
cie.cmf2deg=cie.cmf2deg';
locus = [cie.cmf2deg(1,:)./sum(cie.cmf2deg);cie.cmf2deg(2,:)./sum(cie.cmf2deg)];
plot(locus(1,[1:81,1]),locus(2,[1:81,1]), 'b-');
v = locus(1,[1:81,1]);
g = locus(2,[1:81,1]);
for ii = 1:81
fprintf('(%f,%f)',v(ii)*10,g(ii)*10)
fprintf('--')
if mod(ii,10) == 0
fprintf('\n')
end
end
如果你从 Matlab 复制并粘贴，你会得到这个
\documentclass[]{article}
\usepackage{tikz}
\usetikzlibrary{fadings}
\usepackage[latin1]{inputenc}
\author{}
\date{}
\title{}
\begin{document}
\begin{tikzpicture}
\draw [<->,ultra thick] (0,10) -- (0,0) -- (10,0);
\draw [help lines] (0,0) grid (10,10);
\draw [thick] (1.741123,0.049637)--(1.740078,0.049805)--(1.738008,0.049154)--(1.735599,0.049232)--(1.733369,0.047967)--(1.730210,0.047751)--(1.725766,0.047993)--(1.720866,0.048325)--(1.714074,0.051022)--(1.703010,0.057885)--
(1.688775,0.069002)--(1.668953,0.085556)--(1.644118,0.108576)--(1.611046,0.137934)--(1.566409,0.177048)--(1.509854,0.227402)--(1.439604,0.297030)--(1.355027,0.398791)--(1.241185,0.578025)--(1.095943,0.868425)--
(0.912935,1.327021)--(0.687059,2.007232)--(0.453907,2.949760)--(0.234599,4.127035)--(0.081680,5.384231)--(0.038585,6.548232)--(0.138702,7.501864)--(0.388518,8.120160)--(0.743024,8.338031)--(1.141607,8.262070)--
(1.547221,8.058635)--(1.928762,7.816291)--(2.296197,7.543291)--(2.657751,7.243239)--(3.016039,6.923077)--(3.373633,6.588483)--(3.731015,6.244509)--(4.087363,5.896069)--(4.440625,5.547139)--(4.787748,5.202023)--
(5.124864,4.865908)--(5.447865,4.544341)--(5.751513,4.242322)--(6.029328,3.964966)--(6.270366,3.724911)--(6.482331,3.513949)--(6.657636,3.340107)--(6.800788,3.197472)--(6.915040,3.083422)--(7.006061,2.993007)--
(7.079178,2.920271)--(7.140316,2.859289)--(7.190329,2.809350)--(7.230316,2.769484)--(7.259923,2.740077)--(7.282717,2.717283)--(7.299690,2.700310)--(7.310894,2.689106)--(7.319933,2.680067)--(7.327189,2.672811)--
(7.334170,2.665830)--(7.340473,2.659527)--(7.343902,2.656098)--(7.345917,2.654083)--(7.346873,2.653127)--(7.346920,2.653080)--(7.346783,2.653217)--(7.346683,2.653317)--(7.346680,2.653320)--(7.346719,2.653281)--
(7.346939,2.653061)--(7.347539,2.652461)--(7.348243,2.651757)--(7.345679,2.654321)--(7.345133,2.654867)--(7.343750,2.656250)--(7.345133,2.654867)--(7.358491,2.641509)--(7.345133,2.654867)--(7.375000,2.625000)--
(7.368421,2.631579)--cycle;
\end{tikzpicture}
\end{document}
这是我尝试使用代码为其着色时得到的结果
\documentclass[]{article}
\usepackage{tikz}
\usetikzlibrary{fadings}
\usepackage[latin1]{inputenc}
\author{}
\date{}
\title{}
\begin{document}
\begin{tikzpicture}
\draw [<->,ultra thick] (0,10) -- (0,0) -- (10,0);
\draw [help lines] (0,0) grid (10,10);
\fill [blue] (1.741123,0.049637)--(1.740078,0.049805)--(1.738008,0.049154)--
(1.735599,0.049232)--(1.733369,0.047967)--(1.730210,0.047751)--(1.725766,0.047993)--(1.720866,0.048325)--(1.714074,0.051022)--(1.703010,0.057885)--
(1.688775,0.069002)--(1.668953,0.085556)--(1.644118,0.108576)--(1.611046,0.137934)--(1.566409,0.177048)--(1.509854,0.227402)--(1.439604,0.297030)--(1.355027,0.398791)--(1.241185,0.578025)--(1.095943,0.868425)--
(0.912935,1.327021)--(0.687059,2.007232)--(0.453907,2.949760)--(0.234599,4.127035)--(0.081680,5.384231)--(0.038585,6.548232)--(0.138702,7.501864)--(0.388518,8.120160)--(0.743024,8.338031)--(1.141607,8.262070)--
(1.547221,8.058635)--(1.928762,7.816291)--(2.296197,7.543291)--(2.657751,7.243239)--(3.016039,6.923077)--(3.373633,6.588483)--(3.731015,6.244509)--(4.087363,5.896069)--(4.440625,5.547139)--(4.787748,5.202023)--
(5.124864,4.865908)--(5.447865,4.544341)--(5.751513,4.242322)--(6.029328,3.964966)--(6.270366,3.724911)--(6.482331,3.513949)--(6.657636,3.340107)--(6.800788,3.197472)--(6.915040,3.083422)--(7.006061,2.993007)--
(7.079178,2.920271)--(7.140316,2.859289)--(7.190329,2.809350)--(7.230316,2.769484)--(7.259923,2.740077)--(7.282717,2.717283)--(7.299690,2.700310)--(7.310894,2.689106)--(7.319933,2.680067)--(7.327189,2.672811)--
(7.334170,2.665830)--(7.340473,2.659527)--(7.343902,2.656098)--(7.345917,2.654083)--(7.346873,2.653127)--(7.346920,2.653080)--(7.346783,2.653217)--(7.346683,2.653317)--(7.346680,2.653320)--(7.346719,2.653281)--
(7.346939,2.653061)--(7.347539,2.652461)--(7.348243,2.651757)--(7.345679,2.654321)--(7.345133,2.654867)--(7.343750,2.656250)--(7.345133,2.654867)--(7.358491,2.641509)--(7.345133,2.654867)--(7.375000,2.625000)--
(7.368421,2.631579)--cycle;
\fill [red, path fading =west] (1.741123,0.049637)--(1.740078,0.049805)--(1.738008,0.049154)--(1.735599,0.049232)--(1.733369,0.047967)--(1.730210,0.047751)--(1.725766,0.047993)--(1.720866,0.048325)--(1.714074,0.051022)--(1.703010,0.057885)--
(1.688775,0.069002)--(1.668953,0.085556)--(1.644118,0.108576)--(1.611046,0.137934)--(1.566409,0.177048)--(1.509854,0.227402)--(1.439604,0.297030)--(1.355027,0.398791)--(1.241185,0.578025)--(1.095943,0.868425)--
(0.912935,1.327021)--(0.687059,2.007232)--(0.453907,2.949760)--(0.234599,4.127035)--(0.081680,5.384231)--(0.038585,6.548232)--(0.138702,7.501864)--(0.388518,8.120160)--(0.743024,8.338031)--(1.141607,8.262070)--
(1.547221,8.058635)--(1.928762,7.816291)--(2.296197,7.543291)--(2.657751,7.243239)--(3.016039,6.923077)--(3.373633,6.588483)--(3.731015,6.244509)--(4.087363,5.896069)--(4.440625,5.547139)--(4.787748,5.202023)--
(5.124864,4.865908)--(5.447865,4.544341)--(5.751513,4.242322)--(6.029328,3.964966)--(6.270366,3.724911)--(6.482331,3.513949)--(6.657636,3.340107)--(6.800788,3.197472)--(6.915040,3.083422)--(7.006061,2.993007)--
(7.079178,2.920271)--(7.140316,2.859289)--(7.190329,2.809350)--(7.230316,2.769484)--(7.259923,2.740077)--(7.282717,2.717283)--(7.299690,2.700310)--(7.310894,2.689106)--(7.319933,2.680067)--(7.327189,2.672811)--
(7.334170,2.665830)--(7.340473,2.659527)--(7.343902,2.656098)--(7.345917,2.654083)--(7.346873,2.653127)--(7.346920,2.653080)--(7.346783,2.653217)--(7.346683,2.653317)--(7.346680,2.653320)--(7.346719,2.653281)--
(7.346939,2.653061)--(7.347539,2.652461)--(7.348243,2.651757)--(7.345679,2.654321)--(7.345133,2.654867)--(7.343750,2.656250)--(7.345133,2.654867)--(7.358491,2.641509)--(7.345133,2.654867)--(7.375000,2.625000)--
(7.368421,2.631579)--cycle;
\fill [green,path fading =south] (1.741123,0.049637)--(1.740078,0.049805)--(1.738008,0.049154)--(1.735599,0.049232)--(1.733369,0.047967)--(1.730210,0.047751)--(1.725766,0.047993)--(1.720866,0.048325)--(1.714074,0.051022)--(1.703010,0.057885)--
(1.688775,0.069002)--(1.668953,0.085556)--(1.644118,0.108576)--(1.611046,0.137934)--(1.566409,0.177048)--(1.509854,0.227402)--(1.439604,0.297030)--(1.355027,0.398791)--(1.241185,0.578025)--(1.095943,0.868425)--
(0.912935,1.327021)--(0.687059,2.007232)--(0.453907,2.949760)--(0.234599,4.127035)--(0.081680,5.384231)--(0.038585,6.548232)--(0.138702,7.501864)--(0.388518,8.120160)--(0.743024,8.338031)--(1.141607,8.262070)--
(1.547221,8.058635)--(1.928762,7.816291)--(2.296197,7.543291)--(2.657751,7.243239)--(3.016039,6.923077)--(3.373633,6.588483)--(3.731015,6.244509)--(4.087363,5.896069)--(4.440625,5.547139)--(4.787748,5.202023)--
(5.124864,4.865908)--(5.447865,4.544341)--(5.751513,4.242322)--(6.029328,3.964966)--(6.270366,3.724911)--(6.482331,3.513949)--(6.657636,3.340107)--(6.800788,3.197472)--(6.915040,3.083422)--(7.006061,2.993007)--
(7.079178,2.920271)--(7.140316,2.859289)--(7.190329,2.809350)--(7.230316,2.769484)--(7.259923,2.740077)--(7.282717,2.717283)--(7.299690,2.700310)--(7.310894,2.689106)--(7.319933,2.680067)--(7.327189,2.672811)--
(7.334170,2.665830)--(7.340473,2.659527)--(7.343902,2.656098)--(7.345917,2.654083)--(7.346873,2.653127)--(7.346920,2.653080)--(7.346783,2.653217)--(7.346683,2.653317)--(7.346680,2.653320)--(7.346719,2.653281)--
(7.346939,2.653061)--(7.347539,2.652461)--(7.348243,2.651757)--(7.345679,2.654321)--(7.345133,2.654867)--(7.343750,2.656250)--(7.345133,2.654867)--(7.358491,2.641509)--(7.345133,2.654867)--(7.375000,2.625000)--
(7.368421,2.631579)--cycle;
\end{tikzpicture}
\end{document}
答案1
免责声明：我不是彩色宝石这是我第一次接触比色法。请注意。
解决您的问题的一种优雅方法是函数着色。它允许一种非常通用的解决方案，可以轻松调整以适应其他类似问题（阅读：其他颜色空间）。
仔细检查后，您的数据集似乎很乱，所以我将忽略它并使用更干净的数据集。
我参考了 CIE 1931 获取色度数据，并写下了每个数据集的来源。
我花了一些时间编写了一些可能引起普遍兴趣的简单的 4 类辅助函数。
有趣的部分相对较短，位于底部：
\documentclass{standalone}
\usepackage{tikz}
% ------------------------------------------------------------------- RAW DATA
% DATASET ORIGIN:
% http://steve.hollasch.net/cgindex/color/freq-rgb.html
% Spectral stimuli colors - CIE 1931
\def\spectralLocus{ % xy coordinates from 390nm to 700nm in steps of 5nm
(0.1738,0.0049)(0.1736,0.0049)(0.1733,0.0048)(0.1730,0.0048)(0.1726,0.0048)
(0.1721,0.0048)(0.1714,0.0051)(0.1703,0.0058)(0.1689,0.0069)(0.1669,0.0086)
(0.1644,0.0109)(0.1611,0.0138)(0.1566,0.0177)(0.1510,0.0227)(0.1440,0.0297)
(0.1355,0.0399)(0.1241,0.0578)(0.1096,0.0868)(0.0913,0.1327)(0.0687,0.2007)
(0.0454,0.2950)(0.0235,0.4127)(0.0082,0.5384)(0.0039,0.6548)(0.0139,0.7502)
(0.0389,0.8120)(0.0743,0.8338)(0.1142,0.8262)(0.1547,0.8059)(0.1929,0.7816)
(0.2296,0.7543)(0.2658,0.7243)(0.3016,0.6923)(0.3373,0.6589)(0.3731,0.6245)
(0.4087,0.5896)(0.4441,0.5547)(0.4788,0.5202)(0.5125,0.4866)(0.5448,0.4544)
(0.5752,0.4242)(0.6029,0.3965)(0.6270,0.3725)(0.6482,0.3514)(0.6658,0.3340)
(0.6801,0.3197)(0.6915,0.3083)(0.7006,0.2993)(0.7079,0.2920)(0.7140,0.2859)
(0.7190,0.2809)(0.7230,0.2770)(0.7260,0.2740)(0.7283,0.2717)(0.7300,0.2700)
(0.7311,0.2689)(0.7320,0.2680)(0.7327,0.2673)(0.7334,0.2666)(0.7340,0.2660)
(0.7344,0.2656)(0.7346,0.2654)(0.7347,0.2653)}
% DATASET ORIGIN:
% http://www.vendian.org/mncharity/dir3/blackbody/UnstableURLs/bbr_color.html
% Blackbody colors - CIE 1931
\def\planckianLocus{ % xy coordinates from 1000K to 40000K in steps of 100K
(0.6499,0.3474)(0.6361,0.3594)(0.6226,0.3703)(0.6095,0.3801)(0.5966,0.3887)
(0.5841,0.3962)(0.5720,0.4025)(0.5601,0.4076)(0.5486,0.4118)(0.5375,0.4150)
(0.5267,0.4173)(0.5162,0.4188)(0.5062,0.4196)(0.4965,0.4198)(0.4872,0.4194)
(0.4782,0.4186)(0.4696,0.4173)(0.4614,0.4158)(0.4535,0.4139)(0.4460,0.4118)
(0.4388,0.4095)(0.4320,0.4070)(0.4254,0.4044)(0.4192,0.4018)(0.4132,0.3990)
(0.4075,0.3962)(0.4021,0.3934)(0.3969,0.3905)(0.3919,0.3877)(0.3872,0.3849)
(0.3827,0.3820)(0.3784,0.3793)(0.3743,0.3765)(0.3704,0.3738)(0.3666,0.3711)
(0.3631,0.3685)(0.3596,0.3659)(0.3563,0.3634)(0.3532,0.3609)(0.3502,0.3585)
(0.3473,0.3561)(0.3446,0.3538)(0.3419,0.3516)(0.3394,0.3494)(0.3369,0.3472)
(0.3346,0.3451)(0.3323,0.3431)(0.3302,0.3411)(0.3281,0.3392)(0.3261,0.3373)
(0.3242,0.3355)(0.3223,0.3337)(0.3205,0.3319)(0.3188,0.3302)(0.3171,0.3286)
(0.3155,0.3270)(0.3140,0.3254)(0.3125,0.3238)(0.3110,0.3224)(0.3097,0.3209)
(0.3083,0.3195)(0.3070,0.3181)(0.3058,0.3168)(0.3045,0.3154)(0.3034,0.3142)
(0.3022,0.3129)(0.3011,0.3117)(0.3000,0.3105)(0.2990,0.3094)(0.2980,0.3082)
(0.2970,0.3071)(0.2961,0.3061)(0.2952,0.3050)(0.2943,0.3040)(0.2934,0.3030)
(0.2926,0.3020)(0.2917,0.3011)(0.2910,0.3001)(0.2902,0.2992)(0.2894,0.2983)
(0.2887,0.2975)(0.2880,0.2966)(0.2873,0.2958)(0.2866,0.2950)(0.2860,0.2942)
(0.2853,0.2934)(0.2847,0.2927)(0.2841,0.2919)(0.2835,0.2912)(0.2829,0.2905)
(0.2824,0.2898)(0.2818,0.2891)(0.2813,0.2884)(0.2807,0.2878)(0.2802,0.2871)
(0.2797,0.2865)(0.2792,0.2859)(0.2788,0.2853)(0.2783,0.2847)(0.2778,0.2841)
(0.2774,0.2836)(0.2770,0.2830)(0.2765,0.2825)(0.2761,0.2819)(0.2757,0.2814)
(0.2753,0.2809)(0.2749,0.2804)(0.2745,0.2799)(0.2742,0.2794)(0.2738,0.2789)
(0.2734,0.2785)(0.2731,0.2780)(0.2727,0.2776)(0.2724,0.2771)(0.2721,0.2767)
(0.2717,0.2763)(0.2714,0.2758)(0.2711,0.2754)(0.2708,0.2750)(0.2705,0.2746)
(0.2702,0.2742)(0.2699,0.2738)(0.2696,0.2735)(0.2694,0.2731)(0.2691,0.2727)
(0.2688,0.2724)(0.2686,0.2720)(0.2683,0.2717)(0.2680,0.2713)(0.2678,0.2710)
(0.2675,0.2707)(0.2673,0.2703)(0.2671,0.2700)(0.2668,0.2697)(0.2666,0.2694)
(0.2664,0.2691)(0.2662,0.2688)(0.2659,0.2685)(0.2657,0.2682)(0.2655,0.2679)
(0.2653,0.2676)(0.2651,0.2673)(0.2649,0.2671)(0.2647,0.2668)(0.2645,0.2665)
(0.2643,0.2663)(0.2641,0.2660)(0.2639,0.2657)(0.2638,0.2655)(0.2636,0.2652)
(0.2634,0.2650)(0.2632,0.2648)(0.2631,0.2645)(0.2629,0.2643)(0.2627,0.2641)
(0.2626,0.2638)(0.2624,0.2636)(0.2622,0.2634)(0.2621,0.2632)(0.2619,0.2629)
(0.2618,0.2627)(0.2616,0.2625)(0.2615,0.2623)(0.2613,0.2621)(0.2612,0.2619)
(0.2610,0.2617)(0.2609,0.2615)(0.2608,0.2613)(0.2606,0.2611)(0.2605,0.2609)
(0.2604,0.2607)(0.2602,0.2606)(0.2601,0.2604)(0.2600,0.2602)(0.2598,0.2600)
(0.2597,0.2598)(0.2596,0.2597)(0.2595,0.2595)(0.2593,0.2593)(0.2592,0.2592)
(0.2591,0.2590)(0.2590,0.2588)(0.2589,0.2587)(0.2588,0.2585)(0.2587,0.2584)
(0.2586,0.2582)(0.2584,0.2580)(0.2583,0.2579)(0.2582,0.2577)(0.2581,0.2576)
(0.2580,0.2574)(0.2579,0.2573)(0.2578,0.2572)(0.2577,0.2570)(0.2576,0.2569)
(0.2575,0.2567)(0.2574,0.2566)(0.2573,0.2565)(0.2572,0.2563)(0.2571,0.2562)
(0.2571,0.2561)(0.2570,0.2559)(0.2569,0.2558)(0.2568,0.2557)(0.2567,0.2555)
(0.2566,0.2554)(0.2565,0.2553)(0.2564,0.2552)(0.2564,0.2550)(0.2563,0.2549)
(0.2562,0.2548)(0.2561,0.2547)(0.2560,0.2546)(0.2559,0.2545)(0.2559,0.2543)
(0.2558,0.2542)(0.2557,0.2541)(0.2556,0.2540)(0.2556,0.2539)(0.2555,0.2538)
(0.2554,0.2537)(0.2553,0.2536)(0.2553,0.2535)(0.2552,0.2534)(0.2551,0.2533)
(0.2551,0.2532)(0.2550,0.2531)(0.2549,0.2530)(0.2548,0.2529)(0.2548,0.2528)
(0.2547,0.2527)(0.2546,0.2526)(0.2546,0.2525)(0.2545,0.2524)(0.2544,0.2523)
(0.2544,0.2522)(0.2543,0.2521)(0.2543,0.2520)(0.2542,0.2519)(0.2541,0.2518)
(0.2541,0.2517)(0.2540,0.2516)(0.2540,0.2516)(0.2539,0.2515)(0.2538,0.2514)
(0.2538,0.2513)(0.2537,0.2512)(0.2537,0.2511)(0.2536,0.2511)(0.2535,0.2510)
(0.2535,0.2509)(0.2534,0.2508)(0.2534,0.2507)(0.2533,0.2507)(0.2533,0.2506)
(0.2532,0.2505)(0.2532,0.2504)(0.2531,0.2503)(0.2531,0.2503)(0.2530,0.2502)
(0.2530,0.2501)(0.2529,0.2500)(0.2529,0.2500)(0.2528,0.2499)(0.2528,0.2498)
(0.2527,0.2497)(0.2527,0.2497)(0.2526,0.2496)(0.2526,0.2495)(0.2525,0.2495)
(0.2525,0.2494)(0.2524,0.2493)(0.2524,0.2493)(0.2523,0.2492)(0.2523,0.2491)
(0.2523,0.2491)(0.2522,0.2490)(0.2522,0.2489)(0.2521,0.2489)(0.2521,0.2488)
(0.2520,0.2487)(0.2520,0.2487)(0.2519,0.2486)(0.2519,0.2485)(0.2519,0.2485)
(0.2518,0.2484)(0.2518,0.2484)(0.2517,0.2483)(0.2517,0.2482)(0.2517,0.2482)
(0.2516,0.2481)(0.2516,0.2481)(0.2515,0.2480)(0.2515,0.2480)(0.2515,0.2479)
(0.2514,0.2478)(0.2514,0.2478)(0.2513,0.2477)(0.2513,0.2477)(0.2513,0.2476)
(0.2512,0.2476)(0.2512,0.2475)(0.2512,0.2474)(0.2511,0.2474)(0.2511,0.2473)
(0.2511,0.2473)(0.2510,0.2472)(0.2510,0.2472)(0.2509,0.2471)(0.2509,0.2471)
(0.2509,0.2470)(0.2508,0.2470)(0.2508,0.2469)(0.2508,0.2469)(0.2507,0.2468)
(0.2507,0.2468)(0.2507,0.2467)(0.2506,0.2467)(0.2506,0.2466)(0.2506,0.2466)
(0.2505,0.2465)(0.2505,0.2465)(0.2505,0.2464)(0.2505,0.2464)(0.2504,0.2463)
(0.2504,0.2463)(0.2504,0.2463)(0.2503,0.2462)(0.2503,0.2462)(0.2503,0.2461)
(0.2502,0.2461)(0.2502,0.2460)(0.2502,0.2460)(0.2502,0.2459)(0.2501,0.2459)
(0.2501,0.2459)(0.2501,0.2458)(0.2500,0.2458)(0.2500,0.2457)(0.2500,0.2457)
(0.2500,0.2456)(0.2499,0.2456)(0.2499,0.2456)(0.2499,0.2455)(0.2498,0.2455)
(0.2498,0.2454)(0.2498,0.2454)(0.2498,0.2454)(0.2497,0.2453)(0.2497,0.2453)
(0.2497,0.2452)(0.2497,0.2452)(0.2496,0.2452)(0.2496,0.2451)(0.2496,0.2451)
(0.2496,0.2450)(0.2495,0.2450)(0.2495,0.2450)(0.2495,0.2449)(0.2495,0.2449)
(0.2494,0.2449)(0.2494,0.2448)(0.2494,0.2448)(0.2494,0.2447)(0.2493,0.2447)
(0.2493,0.2447)(0.2493,0.2446)(0.2493,0.2446)(0.2492,0.2446)(0.2492,0.2445)
(0.2492,0.2445)(0.2492,0.2445)(0.2491,0.2444)(0.2491,0.2444)(0.2491,0.2444)
(0.2491,0.2443)(0.2491,0.2443)(0.2490,0.2443)(0.2490,0.2442)(0.2490,0.2442)
(0.2490,0.2442)(0.2489,0.2441)(0.2489,0.2441)(0.2489,0.2441)(0.2489,0.2440)
(0.2489,0.2440)(0.2488,0.2440)(0.2488,0.2439)(0.2488,0.2439)(0.2488,0.2439)
(0.2487,0.2438)}
% ---------------------------------------------- sRGB COLORSPACE SPECIFICATION
% DATASET ORIGIN: http://www.color.org/sRGB.xalter
% CIE chromaticities for ITU-R BT.709 reference primaries
\def\primariesLoci{
(0.6400,0.3300) % R
(0.3000,0.6000) % G
(0.1500,0.0600)} % B
% CIE standard illuminant D65
\def\whitepointLocus{
(0.3127,0.3290)}
% Derived transformation matrix
\def\XYZtoRGB{
{ 3.2410}{-1.5374}{-0.4986}
{-0.9692}{ 1.8760}{ 0.0416}
{ 0.0556}{-0.2040}{ 1.0570}}
% Linear color to gamma corrected transform
\def\gammaCorrect{
dup 0.0031308 le % if < 0.0031308
{12.92 mul} % then linear transform
{1 2.4 div exp 1.055 mul -0.055 add}% else power transform
ifelse }
% ------------------------------------------------------------- TYPE 4 HELPERS
\def\scalarProduct#1#2#3{
#3 mul exch
#2 mul add exch
#1 mul add }
\def\applyMatrix#1#2#3#4#5#6#7#8#9{
3 copy 3 copy
\scalarProduct{#7}{#8}{#9} 7 1 roll
\scalarProduct{#4}{#5}{#6} 5 1 roll
\scalarProduct{#1}{#2}{#3} 3 1 roll }
\def\xyYtoXYZ{ % x y Y
3 copy 3 1 roll % x y Y Y x y
add neg 1 add mul 2 index div % x y Y Y*(-(x+y)+1)/y=Z
4 1 roll % Z x y Y
dup % Z x y Y Y=Y
5 1 roll % Y Z x y Y
3 2 roll % Y Z y Y x
mul exch div % Y Z Y*x/y=X
3 1 roll } % X Y Z
\def\gammaCorrectVector{
\gammaCorrect 3 1 roll
\gammaCorrect 3 1 roll
\gammaCorrect 3 1 roll}
% -------------------------------------------------------------------- DRAWING
\begin{document}
\begin{tikzpicture}
\pgfdeclarefunctionalshading{colorspace}
{\pgfpointorigin}{\pgfpoint{1000bp}{1000bp}}{}{
1000 div exch 1000 div exch % x y (chromaticity)
1.0 % x y Y (chromaticity+luminance)
\xyYtoXYZ % X Y Z (XYZ)
\expandafter\applyMatrix\XYZtoRGB % R G B (sRGB linear)
\gammaCorrectVector } % R G B (sRGB gamma corrected)
\begin{scope} [shift={(-500bp,-500bp)}, scale=100bp/1cm]
% Background + viewport
\fill [black] (-1,-1) rectangle (11,11);
% xy grid
\draw [dashed, gray] grid (10,10);
\begin{scope} [scale=10]
% Spectral locus marks
\path [mark=*, mark repeat=2, white]
plot [mark size=0.10, mark phase=1] coordinates {\spectralLocus}
plot [mark size=0.05, mark phase=2] coordinates {\spectralLocus};
% Smooth spectral locus contour for clipping
\clip [smooth] plot coordinates {\spectralLocus} -- cycle;
% sRGB color space
\pgfuseshading{colorspace}
% Standard illuminant mark
\draw [gray] \whitepointLocus circle (0.005);
% Reference primaries gamut
\fill [black, even odd rule, opacity=0.5]
rectangle +(1,1) plot coordinates {\primariesLoci} -- cycle;
% Planckian locus markings
\path [mark=*,gray]
plot [mark size=0.05, mark repeat=10] coordinates {\planckianLocus}
plot [mark size=0.01, mark repeat=1 ] coordinates {\planckianLocus};
\end{scope}
\end{scope}
\end{tikzpicture}
\end{document}
结果如下：
图像相当大，因此建议您打开并放大。
网格是色度领域的刻度。
正如您所看到的，我还沿着光谱轨迹（白色，从 390nm 到 700nm，每 5nm 一个细刻度，每 10nm 一个粗刻度）和普朗克轨迹（灰色，从 1000K 到 40000K，每 100K 一个细刻度，每 1000K 一个粗刻度）绘制了刻度。
如果我的色度测定法正确，这是 sRGB 色彩空间的全亮度色度图，带有伽马校正。三角形是 ITU-R BT.709 参考原色的色域。光源是标准 D65，用灰色圆圈标记。