stat_plot_3bars_left.gnuplot

clear
reset
unset key
# Make the x axis labels easier to read.
set xtics rotate out
# Select histogram data
set style data histogram
# Give the bars a plain fill pattern, and draw a solid line around them.
set style fill solid border

set key inside left top vertical Right noreverse noenhanced autotitle nobox


set terminal pdf

set output outputfile 
set style histogram clustered
plot for [COL=2:4] datafile using COL:xticlabels(1) title columnheader