gnuplot/demo/argb_hexdata.dem at master · gnuplot/gnuplot · GitHub

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# test unpacking of integer hex matrix data into an ARGB image

$BITS << EOB

0xafffffff 0x3fff0000 0x1f8833aa 0x00ffaa44

0xafff0000 0x3f8833aa 0x1fffaa44 0x00ffffff

0xaf8833aa 0x3fffaa44 0x1f00dddd 0xefffffff

0xafffaa44 0x3fff0000 0x1f8833aa 0x00bb0000

EOB

set pixmap 123 'gradient.png' at screen 0,0 size screen 1,1 behind

set tics 1

unset key

set xrange [-0.5:3.5]; set yrange [-1:3.5]

set title "Alpha+RGB image data loaded from a hexadecimal matrix"

plot 1+2*sin(x*x) lw 4 lc "black", $BITS matrix using 1:2:3 with rgbalpha pixels, \

$BITS matrix using 1:2:(sprintf("0x%08X",$3)) with labels center font ",12"

pause -1 "<cr> to continue"

set grid x y z vertical

set view 33, 46

splot $BITS matrix using 1:2:(1.0):3 with rgbalpha pixels

pause -1 "<cr> to continue"

reset