#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'pm3d.38.png'
unset parametric
set samples 40, 40
set isosamples 40, 40
set xyplane relative 0
set title "pm3d explicit mode --- coloring according to the 4th parameter of 'using'" 
set xrange [ * : * ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
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
sinc(u,v) = sin(sqrt(u**2+v**2)) /sqrt(u**2+v**2)
NO_ANIMATION = 1
## Last datafile plotted: "binary2"
splot 	'binary2' binary u 1:2:3:($2+($1+$2)/10) w pm3d, 	1+sinc(x*4, y*4) w l