examples/plot_histogram/plot.gnuplot
set term png size 600,600
set output './gnuplot.png'
set title "Histogram example"
set style data histograms
set xtics nomirror rotate by -45
$DATA << EOD
"1891-1900" 234081 181288 18167
"1901-1910" 668209 808511 41635
"1911-1920" 453649 442693 33746
"1921-1930" 32868 30680 15846
"1931-1940" 3563 7861 4817
"1941-1950" 24860 3469 12189
"1951-1960" 67106 36637 18575
"1961-1970" 20621 5401 9192
EOD
plot $DATA using 2:xtic(1) title 'Austria',\
$DATA using 3:xtic(1) title 'Hungary',\
$DATA using 4:xtic(1) title 'Belgium'
unset output