// cpt-city: jmn/jmn-c32 (cpt)
//
// A colourmap with monotonic luminance for simultaneous colour and
// grey-scale publications.
//
// J. McNames, "An effective color scale for simultaneous color and
// gray-scale publications," in IEEE Signal Processing Magazine,
// vol. 23, no. 1, pp. 82-96, Jan. 2006,
//
// author: James McNames
// copyright: Free to use
// year: 2009
// url: https://phillips.shef.ac.uk/pub/cpt-city/jmn
#declare jmn_c32 =
color_map {
  [0.00000 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.03226 color rgbf <0.9765,0.9333,0.9882,0.0000>]
  [0.06452 color rgbf <0.9412,0.8745,0.9843,0.0000>]
  [0.09677 color rgbf <0.8941,0.8235,0.9882,0.0000>]
  [0.12903 color rgbf <0.8314,0.7804,0.9922,0.0000>]
  [0.16129 color rgbf <0.7608,0.7529,0.9961,0.0000>]
  [0.19355 color rgbf <0.6824,0.7373,0.9961,0.0000>]
  [0.22581 color rgbf <0.5961,0.7373,0.9804,0.0000>]
  [0.25806 color rgbf <0.5098,0.7529,0.9569,0.0000>]
  [0.29032 color rgbf <0.4275,0.7804,0.9137,0.0000>]
  [0.32258 color rgbf <0.3569,0.8157,0.8549,0.0000>]
  [0.35484 color rgbf <0.2941,0.8588,0.7765,0.0000>]
  [0.38710 color rgbf <0.2471,0.9020,0.6824,0.0000>]
  [0.41935 color rgbf <0.2235,0.9412,0.5725,0.0000>]
  [0.45161 color rgbf <0.2196,0.9725,0.4510,0.0000>]
  [0.48387 color rgbf <0.2392,0.9804,0.3216,0.0000>]
  [0.51613 color rgbf <0.2902,0.9490,0.2078,0.0000>]
  [0.54839 color rgbf <0.3529,0.8745,0.1216,0.0000>]
  [0.58065 color rgbf <0.4118,0.7804,0.0627,0.0000>]
  [0.61290 color rgbf <0.4549,0.6784,0.0235,0.0000>]
  [0.64516 color rgbf <0.4863,0.5686,0.0039,0.0000>]
  [0.67742 color rgbf <0.4980,0.4627,0.0000,0.0000>]
  [0.70968 color rgbf <0.4941,0.3608,0.0078,0.0000>]
  [0.74194 color rgbf <0.4706,0.2706,0.0275,0.0000>]
  [0.77419 color rgbf <0.4353,0.1882,0.0471,0.0000>]
  [0.80645 color rgbf <0.3804,0.1255,0.0667,0.0000>]
  [0.83871 color rgbf <0.3216,0.0745,0.0824,0.0000>]
  [0.87097 color rgbf <0.2510,0.0392,0.0902,0.0000>]
  [0.90323 color rgbf <0.1804,0.0157,0.0863,0.0000>]
  [0.93548 color rgbf <0.1137,0.0039,0.0706,0.0000>]
  [0.96774 color rgbf <0.0510,0.0000,0.0392,0.0000>]
  [1.00000 color rgbf <0.0000,0.0000,0.0000,0.0000>]
}