# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'logic_timing.1.png'
unset border
set style fill   solid 0.20 border rgb "black" 
set format y "bit %.0g" 
unset key
set style data lines
unset xtics
set ytics border in scale 0,0 mirror norotate  offset character 0, 0.3, 0 autojustify
set ytics  norangelimit 1.00000,1 ,8.00000
unset ztics
unset cbtics
unset rtics
set title "Logic timing of bits in sequential ASCII characters" 
set title  font ":Bold" textcolor lt -1 norotate
set xrange [ 0.500000 : 8.00000 ] noreverse
set yrange [ 0.00000 : 9.00000 ] noreverse
set tmargin  4
bit(i)  = (DATA[column(1)] >> (i-1)) & 0x1
char(i) = sprintf( "%c", DATA[i] )
NO_ANIMATION = 1
array DATA[7] = [103,110,117,112,108,111,116]
## Last datafile plotted: "@@"
plot for [k=1:8]         DATA using 1:(0.8 * bit(k)):(0.5) with hsteps offset k lw 2 fc black,      for [k=1:8]         DATA using 1:(k):(bit(k)?"1":"0") with labels offset 0,1 font ",9",      DATA using 1:(0.5):(char($1)) with labels font ",16" tc 'blue'