# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 # set output 'contours.4.png' set key at screen 1, 0.9 right top vertical Right noreverse enhanced autotitle nobox set style textbox opaque margins 0.5, 0.5 fc bgnd noborder linewidth 1.0 set view 60, 30, 0.85, 1.1 set samples 20, 20 set isosamples 21, 21 set contour base set cntrparam levels 3 set cntrparam levels discrete -75,-50 ,0 set style data lines set title "discrete set of contours (at -75, -50, 0)" set xlabel "X axis" set xrange [ * : * ] noreverse writeback set x2range [ * : * ] noreverse writeback set ylabel "Y axis" set yrange [ * : * ] noreverse writeback set y2range [ * : * ] noreverse writeback set zlabel "Z " set zlabel offset character 1, 0, 0 font "" textcolor lt -1 norotate set zrange [ * : * ] noreverse writeback set cbrange [ * : * ] noreverse writeback set rrange [ * : * ] noreverse writeback set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front noinvert bdefault NO_ANIMATION = 1 splot x*y