#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  background "#ffffff" enhanced font "arial,8" fontscale 1.0 size 540, 384 
# set output 'image.4.png'
unset key
set label 1 "\"This picture was taken by my friend Ansel Adams.\"" at 63.0000, 140.000, 0.00000 center norotate back nopoint
unset parametric
set xtics border out scale 1,0.5 mirror norotate  autojustify
set ytics border out scale 1,0.5 mirror norotate  autojustify
set ztics border out scale 1,0.5 nomirror norotate  autojustify
set cbtics border out scale 1,0.5 mirror norotate  autojustify
set rtics axis out scale 1,0.5 nomirror norotate  autojustify
set title "The palette can be changed from color to gray scale" 
set xrange [ -10.0000 : 137.000 ] noreverse nowriteback
set x2range [ * : * ] noreverse writeback
set yrange [ -10.0000 : 157.000 ] noreverse nowriteback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set palette positive nops_allcF maxcolors 0 gamma 1.5 gray
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
unset colorbox
NO_ANIMATION = 1
## Last datafile plotted: "blutux.rgb"
plot 'blutux.rgb' binary array=(128,128) flipy format='%uchar%uchar%uchar' using ($1+$2+$3)/3 with image