// cpt-city: jjg/dem/ukdem (cpt)
//
// Various digital elevation models (DEM) schemes
//
// author: J.J. Green
// copyright: Public domain
// year: 2004
// url: https://phillips.shef.ac.uk/pub/cpt-city/jjg/dem
#declare ukdem =
color_map {
  [0.00000 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.08333 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.08333 color rgbf <1.0000,0.9882,0.9020,0.0000>]
  [0.16667 color rgbf <1.0000,0.9882,0.9020,0.0000>]
  [0.16667 color rgbf <1.0000,0.9843,0.8549,0.0000>]
  [0.25000 color rgbf <1.0000,0.9843,0.8549,0.0000>]
  [0.25000 color rgbf <1.0000,0.9529,0.7843,0.0000>]
  [0.33333 color rgbf <1.0000,0.9529,0.7843,0.0000>]
  [0.33333 color rgbf <1.0000,0.9098,0.6980,0.0000>]
  [0.41667 color rgbf <1.0000,0.9098,0.6980,0.0000>]
  [0.41667 color rgbf <1.0000,0.8667,0.6863,0.0000>]
  [0.50000 color rgbf <1.0000,0.8667,0.6863,0.0000>]
  [0.50000 color rgbf <1.0000,0.8392,0.6667,0.0000>]
  [0.58333 color rgbf <1.0000,0.8392,0.6667,0.0000>]
  [0.58333 color rgbf <1.0000,0.8275,0.6392,0.0000>]
  [0.66667 color rgbf <1.0000,0.8275,0.6392,0.0000>]
  [0.66667 color rgbf <1.0000,0.8196,0.6118,0.0000>]
  [0.75000 color rgbf <1.0000,0.8196,0.6118,0.0000>]
  [0.75000 color rgbf <1.0000,0.7961,0.6039,0.0000>]
  [0.83333 color rgbf <1.0000,0.7961,0.6039,0.0000>]
  [0.83333 color rgbf <1.0000,0.7765,0.5922,0.0000>]
  [0.91667 color rgbf <1.0000,0.7765,0.5922,0.0000>]
  [0.91667 color rgbf <1.0000,0.7569,0.5843,0.0000>]
  [1.00000 color rgbf <1.0000,0.7569,0.5843,0.0000>]
}