# set terminal canvas rounded size 600,400 enhanced fsize 10 lw 1.6 fontscale 1 name "pm3d_8" jsdir "." # set output 'pm3d.8.js' 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 "colour map, using default rgbformulae 7,5,15 ... traditional pm3d (black-blue-red-yellow)" 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 splot sin(sqrt(x**2+y**2))/sqrt(x**2+y**2)