# set terminal svg size 600,400 dynamic enhanced fname 'arial' fsize 10 mousing name "pm3d_11" butt solid # set output 'pm3d.11.svg' set border 4095 front linetype -1 linewidth 1.000 set view map set samples 50, 50 set isosamples 50, 50 unset surface set style data pm3d set style function pm3d set ticslevel 0 set title "colour, rgbformulae 30,31,32 ... color printable on gray (black-blue-violet-yellow-white)" 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 rgbformulae 30, 31, 32 splot sin(sqrt(x**2+y**2))/sqrt(x**2+y**2)