# set terminal pngcairo  background "#ffffff" enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'image2.8.png'
set arrow 1 from -10, 0, 0 to 10, 0, 0 nohead back nofilled linetype -1 linewidth 1.000
set arrow 2 from 0, -10, 0 to 0, 10, 0 nohead back nofilled linetype -1 linewidth 1.000
set arrow 3 from 0, 0, -10 to 0, 0, 10 nohead back nofilled linetype -1 linewidth 1.000
set arrow 4 from 0, 0, 0 to 30, 30, 30 head back filled linetype -1 linewidth 1.000 size screen 0.025,30.000,45.000
set style line 1  linetype -1 linewidth 1.000 pointtype -1 pointsize default pointinterval 0
set style line 2  linetype -1 linewidth 1.000 pointtype -1 pointsize default pointinterval 0
set style arrow 1 nohead back nofilled linetype -1 linewidth 1.000
set style arrow 2 head back filled linetype -1 linewidth 1.000 size screen 0.025,30.000,45.000
set title "The key word 'perpendicular' applies only to 'splot'" 
set cbrange [ 0.00000 : 255.000 ] noreverse nowriteback
splot 'blutux.rgb' binary array=(128,128) flipy rot=1.0pi center = (63.5,63.5,50) perp=(1,1,1) format='%uchar%uchar%uchar' using ($1+$2+$3)/3 with image