Database Reference
In-Depth Information
Example 7-1. Creating a histogram using Gnuplot
# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size
# set output 'histograms.6.png'
set border 3 front linetype -1 linewidth 1.000
set boxwidth 0.75 absolute
set style fill solid 1.00 border lt -1
set grid nopolar
set grid noxtics nomxtics ytics nomytics noztics nomztics \
nox2tics nomx2tics noy2tics nomy2tics nocbtics nomcbtics
set grid layerdefault linetype 0 linewidth 1.000, linetype 0 linewidth 1.000
set key outside right top vertical Left reverse noenhanced autotitles columnhead
set style histogram columnstacked title offset character 0, 0, 0
set datafile missing '-'
set style data histograms
set xtics border in scale 1,0.5 nomirror norotate offset character 0, 0, 0 auto
set xtics norangelimit
set xtics ()
set ytics border in scale 0,0 mirror norotate offset character 0, 0, 0 autojust
set ztics border in scale 0,0 nomirror norotate offset character 0, 0, 0 autoju
set cbtics border in scale 0,0 mirror norotate offset character 0, 0, 0 autojus
set rtics axis in scale 0,0 nomirror norotate offset character 0, 0, 0 autojust
set title "Immigration from Northern Europe\n(columstacked histogram)"
set xlabel "Country of Origin"
set ylabel "Immigration by decade"
set yrange [ 0.00000 : * ] noreverse nowriteback
i = 23
plot 'immigration.dat' using 6 ti col, '' using 12 ti col, '' using 13 ti c
Note that this is trimmed to 80 characters wide. This script generates the plot shown
in
Figure 7-1
.
Figure 7-1. Immigration plot by Gnuplot
