#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'margins.1.png'
unset key
unset parametric
set view map scale 1
set samples 50, 50
set isosamples 50, 50
set style data lines
unset ytics
set urange [ -15.0000 : 15.0000 ] noreverse nowriteback
set vrange [ -15.0000 : 15.0000 ] noreverse nowriteback
set xrange [ -15.0000 : 15.0000 ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zrange [ -0.250000 : 1.00000 ] noreverse nowriteback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set lmargin at screen 0.2
set bmargin at screen 0.1
set rmargin at screen 0.85
set tmargin at screen 0.25
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
f(h) = sin(sqrt(h**2))/sqrt(h**2)
NO_ANIMATION = 1
y = 0
plot sin(sqrt(x**2+y**2))/sqrt(x**2+y**2)