#!/usr/local/bin/gnuplot -persist
# set terminal pngcairo  background "#ffffff" enhanced fontscale 2.5 size 500, 500 
# set output 'cities.1.png'
unset border
unset key
unset parametric
set datafile separator "	"
set size ratio 1 1,1
set style data lines
unset xtics
unset ytics
set xrange [ * : * ] noreverse writeback
set x2range [ * : * ] noreverse writeback
set yrange [ * : * ] noreverse writeback
set y2range [ * : * ] noreverse writeback
set zrange [ * : * ] noreverse writeback
set cbrange [ * : * ] noreverse writeback
set rrange [ * : * ] noreverse writeback
set colorbox vertical origin screen 0.9, 0.2 size screen 0.05, 0.6 front  noinvert bdefault
Scale(size) = 0.25*sqrt(sqrt(column(size)))
CityName(String,Size) = sprintf("{/=%d %s}", Scale(Size), stringcolumn(String))
NO_ANIMATION = 1
save_encoding = "utf8"
## Last datafile plotted: "cities.dat"
plot 'cities.dat' using 5:4:($3 < 5000 ? "-" : CityName(1,3)) with labels