#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'simple.8.png'
set key bmargin left horizontal Right noreverse enhanced autotitle box lt black linewidth 1.000 dashtype solid
unset parametric
set samples 800, 800
set title "Simple Plots" 
set title  font ",20" textcolor lt -1 norotate
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
NO_ANIMATION = 1
## Last datafile plotted: "3.dat"
plot [-19:19] '1.dat'with impulses ,'2.dat' ,'3.dat' with lines