# set terminal png transparent nocrop enhanced font arial 8 size 420,320 # set output 'surface1.8.png' set samples 21, 21 set isosamples 11, 11 set title "3D gnuplot demo" set xlabel "X axis" set xlabel offset character -3, -2, 0 font "" textcolor lt -1 norotate set xrange [ -10.0000 : 10.0000 ] noreverse nowriteback set ylabel "Y axis" set ylabel offset character 3, -2, 0 font "" textcolor lt -1 rotate by 90 set yrange [ -10.0000 : 10.0000 ] noreverse nowriteback set zlabel "Z axis" set zlabel offset character -5, 0, 0 font "" textcolor lt -1 norotate splot x*y with points