# nile_commands.txt
#
# Usage:
#  gnuplot < nile_commands.txt
#
set term png
set output 'nile_histogram.png'
set xlabel '<--- Height of Nile at Maximum Flood --->'
set ylabel '<--- Frequency --->'
set title 'Yearly Nile Flood Height'
set grid
set timestamp
set style fill solid
unset key
binwidth = 0.25
binstart = 5.0
set boxwidth 0.9*binwidth
plot 'nile_data.txt' i 0 using (binwidth*(floor(($2-binstart)/binwidth)+0.5)+binstart):(1.0) smooth freq with boxes lc rgb 'red'
quit