# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 # set output 'pm3d.12.png' set border 4095 front lt black linewidth 1.000 dashtype solid set view map scale 1 set samples 50, 50 set isosamples 50, 50 unset surface set style data pm3d set style function pm3d set xyplane relative 0 set title "cubehelix color scheme with monotonic intensity\nD A Green (2011) http://arxiv.org/abs/1108.5083" set title offset character 0, 1, 0 font "" norotate set xlabel "x" set xrange [ -15.0000 : 15.0000 ] noreverse nowriteback set ylabel "y" set yrange [ -15.0000 : 15.0000 ] noreverse nowriteback set zrange [ -0.250000 : 1.00000 ] noreverse nowriteback set pm3d implicit at b set palette cubehelix start 0.5 cycles -1.5 saturation 1 splot sin(sqrt(x**2+y**2))/sqrt(x**2+y**2)