# set terminal png transparent nocrop enhanced font arial 8 size 420,320 
# set output 'pm3d.17.png'
set border 4095 lt -1 lw 1.000
set style line 100 linetype 5 linewidth 0.500 pointtype 100 pointsize 1.000
set view 50, 220, 1, 1
set samples 30, 30
set isosamples 30, 30
unset surface
set title "set pm3d hidden3d <linetype>: pm3d's much faster hidden3d variant" 0.000000,0.000000  font ""
set xrange [ -2.00000 : 2.00000 ] noreverse nowriteback
set yrange [ -2.00000 : 2.00000 ] noreverse nowriteback
set pm3d at s
set pm3d scansautomatic flush begin noftriangles hidden3d 100 solid implicit corners2color mean
splot log(x*x*y*y)