#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  background "#ffffff" enhanced font "arial,8" fontscale 1.0 size 540, 360 
# set output 'rgb_variable.4.png'
set border -1 front lt black linewidth 1.000 dashtype solid
set angles degrees
unset parametric
set style data lines
set xyplane relative 0
set xtics border in scale 1,0.5 nomirror norotate  autojustify
set ytics border in scale 1,0.5 nomirror norotate  autojustify
set title "Both RGB color information\n and point size controlled by input" 
set xlabel "Red" 
set xlabel  font "" textcolor rgb "red"  norotate
set xrange [ 0.00000 : 255.000 ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set ylabel "Green" 
set ylabel  font "" textcolor rgb "green"  rotate
set yrange [ 0.00000 : 255.000 ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zlabel "Blue" 
set zlabel  font "" textcolor rgb "blue"  norotate
set zrange [ 0.00000 : 255.000 ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set lmargin  5
set bmargin  2
set rmargin  5
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
rgb(r,g,b) = int(r)*65536 + int(g)*256 + int(b)
xrgb(r,g,b) = (g-b)/255. * cos(30.)
yrgb(r,g,b) = r/255. - (g+b)/255. * sin(30.)
NO_ANIMATION = 1
## Last datafile plotted: "rgb_variable.dat"
splot 'rgb_variable.dat' using 1:2:3:(5*rand(0)):4 with points pt 7 ps variable lc rgb variable       title "variable pointsize and rgb color read as hexadecimal"