# set terminal png transparent nocrop enhanced font arial 8 size 420,320 
# set output 'pm3d.18.png'
set border 4095 front linetype -1 linewidth 1.000
set style line 100  linetype 5 linewidth 0.500 pointtype 100 pointsize default
set view 50, 220, 1, 1
set samples 30, 30
set isosamples 30, 30
unset surface
set ticslevel 0
set title "solution: use independent 'set zrange' and 'set cbrange'" 
set xrange [ -1.00000 : 1.00000 ] noreverse nowriteback
set yrange [ -1.00000 : 1.00000 ] noreverse nowriteback
set zrange [ -15.0000 : 60.0000 ] noreverse nowriteback
set cbrange [ -15.0000 : 4.00000 ] noreverse nowriteback
set pm3d implicit at st
splot log(x*x*y*y)