// cpt-city: gacruxa/mccahon/mccahon-13 (svg)
//
// Gradients based on integer sequences and traditional Japanese
// colours, by US-based digital artist Gacruxa.
//
// author: Gacruxa
// copyright: CC BY 3.0
// year: 2014
// url: https://phillips.shef.ac.uk/pub/cpt-city/gacruxa/mccahon
#declare mccahon_13 =
color_map {
  [0.00000 color rgbf <0.8902,0.5333,0.2549,0.0000>]
  [0.03687 color rgbf <0.8667,0.5373,0.2706,0.0000>]
  [0.07373 color rgbf <0.8353,0.5490,0.2902,0.0000>]
  [0.11060 color rgbf <0.7961,0.5569,0.3176,0.0000>]
  [0.14746 color rgbf <0.7569,0.5686,0.3451,0.0000>]
  [0.18408 color rgbf <0.7176,0.5804,0.3686,0.0000>]
  [0.22095 color rgbf <0.6824,0.5882,0.3922,0.0000>]
  [0.25781 color rgbf <0.6588,0.5922,0.4078,0.0000>]
  [0.29468 color rgbf <0.6510,0.5961,0.4118,0.0000>]
  [0.29565 color rgbf <0.6588,0.5922,0.4078,0.0000>]
  [0.29688 color rgbf <0.6824,0.5843,0.3882,0.0000>]
  [0.29785 color rgbf <0.7137,0.5725,0.3647,0.0000>]
  [0.29883 color rgbf <0.7490,0.5608,0.3412,0.0000>]
  [0.29980 color rgbf <0.7882,0.5490,0.3137,0.0000>]
  [0.30102 color rgbf <0.8353,0.5373,0.2824,0.0000>]
  [0.30200 color rgbf <0.8667,0.5333,0.2667,0.0000>]
  [0.30298 color rgbf <0.8902,0.5333,0.2549,0.0000>]
  [0.30884 color rgbf <0.9137,0.5451,0.2549,0.0000>]
  [0.31470 color rgbf <0.9412,0.5647,0.2588,0.0000>]
  [0.32056 color rgbf <0.9686,0.5922,0.2745,0.0000>]
  [0.32642 color rgbf <0.9922,0.6196,0.2863,0.0000>]
  [0.33227 color rgbf <1.0000,0.6471,0.3020,0.0000>]
  [0.33813 color rgbf <1.0000,0.6667,0.3137,0.0000>]
  [0.34399 color rgbf <1.0000,0.6745,0.3216,0.0000>]
  [0.34985 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.36841 color rgbf <0.9294,0.6392,0.3059,0.0000>]
  [0.38696 color rgbf <0.8392,0.5882,0.2824,0.0000>]
  [0.40552 color rgbf <0.7333,0.5294,0.2549,0.0000>]
  [0.42432 color rgbf <0.6157,0.4588,0.2235,0.0000>]
  [0.44287 color rgbf <0.5020,0.3961,0.1922,0.0000>]
  [0.46143 color rgbf <0.4078,0.3412,0.1647,0.0000>]
  [0.47998 color rgbf <0.3412,0.3020,0.1490,0.0000>]
  [0.49853 color rgbf <0.3176,0.2863,0.1412,0.0000>]
  [0.49902 color rgbf <0.3608,0.3098,0.1529,0.0000>]
  [0.49927 color rgbf <0.4078,0.3373,0.1647,0.0000>]
  [0.49976 color rgbf <0.5333,0.4118,0.2000,0.0000>]
  [0.50000 color rgbf <0.6078,0.4510,0.2196,0.0000>]
  [0.50049 color rgbf <0.7608,0.5412,0.2588,0.0000>]
  [0.50073 color rgbf <0.8314,0.5804,0.2784,0.0000>]
  [0.50122 color rgbf <0.9490,0.6471,0.3098,0.0000>]
  [0.50147 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.51392 color rgbf <1.0000,0.6863,0.3255,0.0000>]
  [0.52637 color rgbf <1.0000,0.6980,0.3333,0.0000>]
  [0.53857 color rgbf <1.0000,0.7059,0.3373,0.0000>]
  [0.55102 color rgbf <1.0000,0.7059,0.3412,0.0000>]
  [0.56348 color rgbf <1.0000,0.6980,0.3373,0.0000>]
  [0.57593 color rgbf <1.0000,0.6902,0.3333,0.0000>]
  [0.58813 color rgbf <0.9922,0.6784,0.3255,0.0000>]
  [0.59790 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.60059 color rgbf <0.9843,0.6667,0.3176,1.0000>]
  [0.60742 color rgbf <0.9765,0.6471,0.3020,1.0000>]
  [0.61450 color rgbf <0.9608,0.6196,0.2824,1.0000>]
  [0.62134 color rgbf <0.9490,0.5882,0.2588,1.0000>]
  [0.62817 color rgbf <0.9294,0.5529,0.2353,1.0000>]
  [0.63501 color rgbf <0.9137,0.5176,0.2078,1.0000>]
  [0.64209 color rgbf <0.8980,0.4863,0.1843,1.0000>]
  [0.64893 color rgbf <0.8863,0.4588,0.1647,1.0000>]
  [0.65064 color rgbf <0.8824,0.4510,0.1608,1.0000>]
  [0.65576 color rgbf <0.8784,0.4392,0.1490,0.0000>]
  [0.69873 color rgbf <0.8745,0.4275,0.1412,0.0025>]
  [0.74194 color rgbf <0.8706,0.4235,0.1373,0.0050>]
  [0.78491 color rgbf <0.8706,0.4235,0.1373,0.0075>]
  [0.82788 color rgbf <0.8706,0.4235,0.1373,0.0100>]
  [0.87085 color rgbf <0.8745,0.4275,0.1412,0.0125>]
  [0.91406 color rgbf <0.8745,0.4353,0.1451,0.0150>]
  [0.95703 color rgbf <0.8784,0.4392,0.1490,0.0175>]
  [1.00000 color rgbf <0.8784,0.4392,0.1490,0.0200>]
}