// cpt-city: jjg/polarity/PiYG (cpt)
//
// Diverging gradients which are continuous except at
// the centre-point, for emphasis of the sign of the data.
// Here the colour-stops are taken from the diverging
// schemes by Cynthia Brewer.
//
// author: J.J. Green
// copyright: Apache-like
// year: 2004
// url: https://phillips.shef.ac.uk/pub/cpt-city/jjg/polarity
#declare PiYG =
color_map {
  [0.00000 color rgbf <0.5569,0.0039,0.3216,0.0000>]
  [0.12500 color rgbf <0.7725,0.1059,0.4902,0.0000>]
  [0.25000 color rgbf <0.8706,0.4667,0.6824,0.0000>]
  [0.37500 color rgbf <0.9451,0.7137,0.8549,0.0000>]
  [0.50000 color rgbf <0.9922,0.8784,0.9373,0.0000>]
  [0.50000 color rgbf <0.9020,0.9608,0.8157,0.0000>]
  [0.62500 color rgbf <0.7216,0.8824,0.5255,0.0000>]
  [0.75000 color rgbf <0.4980,0.7373,0.2549,0.0000>]
  [0.87500 color rgbf <0.3020,0.5725,0.1294,0.0000>]
  [1.00000 color rgbf <0.1529,0.3922,0.0980,0.0000>]
}