#
# plot results for estimating pi using a Monte Carlo approach,
# using three different methods for generating random numbers.
#

# to run in batch:
# gnuplot histogram.plotin

# to use interactively:
# omit or comment out the following two lines, then from gnuplot:
# load "histogram.plotin"

set terminal png
set output "histogram.png"

set style data histogram 
set style fill solid
set xlabel "Number of samples"
set ylabel "Error in computation"
set xtics rotate out # x-axis labels rotated
plot "combined.dat" \
         using 2:xticlabels(1) title "with C library function (seed 29)", \
        "" using 3 title "with Java library class (seed 31)", \
        "" using 4 title "with custom LCG function (seed 4321)"