# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'pm3dcolors.1.png'
g(x)=x
NO_ANIMATION = 1
## Last plot was a multiplot
# saved multiplot
set multiplot layout 3,3     title "Palettes according to 'help palette rgbformulae'"
g(x)=x
set xrange [0:1]; set xtics 0.2 scale 1.5 nomirror; set mxtics 2
unset colorbox; unset key; set tics out; unset ytics
set palette rgb 7,5,15; set title "traditional pm3d\n(black-blue-red-yellow)"; splot g(x)
set palette rgb 3,11,6; set title "green-red-violet"; splot g(x)
set palette rgb 23,28,3; set title "ocean (green-blue-white)\ntry also other permutations"; splot g(x)
set palette rgb 21,22,23; set title "hot (black-red-yellow-white)"; splot g(x)
set palette rgb 30,31,32; set title "color printable on gray\n(black-blue-violet-yellow-white)"; splot g(x)
set palette rgb 33,13,10; set title "rainbow (blue-green-yellow-red)"; splot g(x)
set palette rgb 34,35,36; set title "AFM hot (black-red-yellow-white)"; splot g(x)
set palette model HSV
set palette rgb 3,2,2; set title "HSV model\n(red-yellow-green-cyan-blue-magenta-red)"; splot g(x)
set pal gray; set title "gray palette"; splot g(x)
unset multiplot