// cpt-city: km/purple-orange (cpt)
//
// Diverging Color Maps for Scientific Visualization, Kenneth
// Moreland. ISVC '09: Proceedings of the 5th International
// Symposium on Advances in Visual Computing: Part II pp, 92-103
//
// author: Kenneth Moreland
// copyright: Public domain
// year: 2012
// url: https://phillips.shef.ac.uk/pub/cpt-city/km
#declare purple_orange =
color_map {
  [0.00000 color rgbf <0.4353,0.3098,0.6314,0.0000>]
  [0.01562 color rgbf <0.4588,0.3176,0.6392,0.0000>]
  [0.03125 color rgbf <0.4863,0.3294,0.6471,0.0000>]
  [0.04688 color rgbf <0.5098,0.3451,0.6510,0.0000>]
  [0.06250 color rgbf <0.5333,0.3569,0.6588,0.0000>]
  [0.07812 color rgbf <0.5608,0.3686,0.6667,0.0000>]
  [0.09375 color rgbf <0.5843,0.3843,0.6706,0.0000>]
  [0.10938 color rgbf <0.6078,0.3961,0.6784,0.0000>]
  [0.12500 color rgbf <0.6314,0.4118,0.6824,0.0000>]
  [0.14062 color rgbf <0.6549,0.4275,0.6902,0.0000>]
  [0.15625 color rgbf <0.6745,0.4431,0.6941,0.0000>]
  [0.17188 color rgbf <0.6980,0.4588,0.7020,0.0000>]
  [0.18750 color rgbf <0.7176,0.4745,0.7059,0.0000>]
  [0.20312 color rgbf <0.7373,0.4902,0.7137,0.0000>]
  [0.21875 color rgbf <0.7569,0.5059,0.7176,0.0000>]
  [0.23438 color rgbf <0.7765,0.5255,0.7255,0.0000>]
  [0.25000 color rgbf <0.7922,0.5412,0.7294,0.0000>]
  [0.26562 color rgbf <0.8078,0.5608,0.7373,0.0000>]
  [0.28125 color rgbf <0.8235,0.5804,0.7451,0.0000>]
  [0.29688 color rgbf <0.8353,0.6000,0.7490,0.0000>]
  [0.31250 color rgbf <0.8471,0.6196,0.7569,0.0000>]
  [0.32812 color rgbf <0.8588,0.6392,0.7647,0.0000>]
  [0.34375 color rgbf <0.8667,0.6588,0.7725,0.0000>]
  [0.35938 color rgbf <0.8745,0.6784,0.7804,0.0000>]
  [0.37500 color rgbf <0.8824,0.7020,0.7882,0.0000>]
  [0.39062 color rgbf <0.8863,0.7216,0.8000,0.0000>]
  [0.40625 color rgbf <0.8902,0.7451,0.8078,0.0000>]
  [0.42188 color rgbf <0.8902,0.7647,0.8157,0.0000>]
  [0.43750 color rgbf <0.8902,0.7882,0.8275,0.0000>]
  [0.45312 color rgbf <0.8902,0.8078,0.8392,0.0000>]
  [0.46875 color rgbf <0.8863,0.8314,0.8510,0.0000>]
  [0.48438 color rgbf <0.8824,0.8549,0.8627,0.0000>]
  [0.50000 color rgbf <0.8745,0.8745,0.8745,0.0000>]
  [0.51562 color rgbf <0.8902,0.8706,0.8392,0.0000>]
  [0.53125 color rgbf <0.9059,0.8667,0.8039,0.0000>]
  [0.54688 color rgbf <0.9176,0.8588,0.7686,0.0000>]
  [0.56250 color rgbf <0.9294,0.8510,0.7333,0.0000>]
  [0.57812 color rgbf <0.9373,0.8431,0.6980,0.0000>]
  [0.59375 color rgbf <0.9490,0.8314,0.6627,0.0000>]
  [0.60938 color rgbf <0.9569,0.8196,0.6275,0.0000>]
  [0.62500 color rgbf <0.9647,0.8078,0.5961,0.0000>]
  [0.64062 color rgbf <0.9686,0.7961,0.5608,0.0000>]
  [0.65625 color rgbf <0.9725,0.7804,0.5294,0.0000>]
  [0.67188 color rgbf <0.9765,0.7647,0.4941,0.0000>]
  [0.68750 color rgbf <0.9765,0.7490,0.4627,0.0000>]
  [0.70312 color rgbf <0.9765,0.7333,0.4314,0.0000>]
  [0.71875 color rgbf <0.9765,0.7137,0.4039,0.0000>]
  [0.73438 color rgbf <0.9765,0.6980,0.3725,0.0000>]
  [0.75000 color rgbf <0.9725,0.6784,0.3451,0.0000>]
  [0.76562 color rgbf <0.9647,0.6588,0.3176,0.0000>]
  [0.78125 color rgbf <0.9608,0.6392,0.2941,0.0000>]
  [0.79688 color rgbf <0.9529,0.6157,0.2667,0.0000>]
  [0.81250 color rgbf <0.9451,0.5961,0.2431,0.0000>]
  [0.82812 color rgbf <0.9333,0.5725,0.2196,0.0000>]
  [0.84375 color rgbf <0.9255,0.5529,0.2000,0.0000>]
  [0.85938 color rgbf <0.9137,0.5294,0.1804,0.0000>]
  [0.87500 color rgbf <0.8980,0.5098,0.1608,0.0000>]
  [0.89062 color rgbf <0.8863,0.4863,0.1412,0.0000>]
  [0.90625 color rgbf <0.8706,0.4627,0.1255,0.0000>]
  [0.92188 color rgbf <0.8549,0.4431,0.1098,0.0000>]
  [0.93750 color rgbf <0.8353,0.4196,0.0941,0.0000>]
  [0.95312 color rgbf <0.8196,0.4000,0.0824,0.0000>]
  [0.96875 color rgbf <0.8000,0.3765,0.0667,0.0000>]
  [0.98438 color rgbf <0.7804,0.3569,0.0549,0.0000>]
  [1.00000 color rgbf <0.7608,0.3333,0.0471,0.0000>]
}