# POPULATION PYRAMID # Script last modified 30-May-2010  scale = 1000 # ADJUST AS NECESSARY # The increment would better be automatic, but "set xtics" doesn't # allow to specify start only. increment = 50 # ADJUST THIS AS NECESSARY gap_width = 0.11 # ADJUST THIS AS NECESSARY  # ADJUST TITLES AS NECESSARY set encoding iso_8859_1 set title "Pyramide des \342ges, Albanie, 2009" set xlabel "Effectifs (en milliers)"  # Input file contains comma-separated values fields set datafile separator ","  # Plot to dummy device and retrieve the male/female population range set term unknown  set autoscale xfix plot "data.csv" using ($4/scale):2, "data.csv" using (-$5/scale):2  range_male = (GPVAL_X_MAX > -GPVAL_X_MIN) ? GPVAL_X_MAX : -GPVAL_X_MIN range_female = range_male central_gap = (range_male + range_female) * gap_width  set term png transparent truecolor size 640,400 #set term svg size 800,500 dynamic font "sans-serif"  set style data boxxyerrorbars set style fill solid 0.5 border  # Y axis is invisible unset ytics set autoscale yfix  # X axis is labeled from zero onwards, with the given increment set xrange [-range_female-central_gap:range_male] set xtics nomirror 0,increment  set x2range [range_female:-central_gap-range_male] set x2tics axis 0,increment  plot \  "data.csv" using (0):2:(0):($4/scale):2:($2+4)\   title "Hommes" linetype rgb "#296dcc",\  "data.csv" using (0):2:(0):($5/scale):2:($2+4) axes x2y1\   title "Femmes" linetype rgb "#aa3f74",\  "data.csv" using (-central_gap/2):($2+1.8):2 title "" with labels