# set terminal png transparent nocrop enhanced font arial 8 size 420,320 # set output 'contours.2.png' set view 60, 30, 0.85, 1.1 set samples 20, 20 set isosamples 21, 21 set contour base set cntrparam levels auto 20 set title "3D gnuplot demo - contour plot (more contours)" set xlabel "X axis" set ylabel "Y axis" set zlabel "Z axis" set zlabel offset character 1, 0, 0 font "" textcolor lt -1 norotate splot x*y