# president_heights_commands.txt
#
# Usage:
#  gnuplot < president_heights_commands.txt
#
set term png
set output 'president_heights_histogram.png'
set xlabel '<--- Height (inches) --->'
set ylabel '<--- Frequency --->'
set title 'Presidential Heights'
set grid
set style fill solid
set yrange [0:10]
unset key
binwidth = 1.0
binstart = 64.0
set boxwidth 0.9*binwidth
plot 'president_heights_data.txt' i 0 using (binwidth*(floor(($1-binstart)/binwidth)+0.5)+binstart):(1.0) smooth freq with boxes lc rgb 'blue'
quit