# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 600, 400 
# set output 'steps.3.png'
set style fill   solid 1.00 border
set style data lines
set title "Histogram built from unsorted data by 'smooth frequency'" 
set xlabel "bins" 
set ylabel "counts per bin" 
NO_ANIMATION = 1
## Last datafile plotted: "hemisphr.dat"
plot 'hemisphr.dat' u (floor($1*20)):(1) smooth freq with fillsteps title "with fillsteps"