#  geyser_input.txt
#
#  Input to GNUPLOT, causing it to read GEYSER.TXT and
#  create a histogram of the data.
#
#  Choose the output device.
#
set term png medium
#
#  Name the output file.
#
set output "geyser.png"
#
#  Set the plot title.
#
set title "Time between eruptions of Old Faithful"
set xlabel "Minutes"
set ylabel "Frequency"
#
#  Add grid lines.
#
set grid
#
set style fill solid

binwidth = 5.0
bin(x,width) = width * floor(x/width) + binwidth/2.0
#
#  Timestamp the plot.
#
set timestamp
plot "geyser.txt" using (bin($1,binwidth)):(1.0) smooth freq with boxes
#
#  Terminate.
#
quit