# set terminal pngcairo  background "#ffffff" font "arial,10" fontscale 1.0 size 500, 300 
# set output 'circles.2.png'
set style fill   solid 1.00 border lt -1
set angles degrees
unset key
set object 20 rect from graph 0, 0, 0 to graph 1, 1, 0
set object 20 behind lw 1.0 fc  rgb "cyan"  fillstyle   solid 0.20 border lt -1
set size ratio -1 1,1
set noxtics
set noytics
set title "Sources of energy production, plotted for each continent" 
set yrange [ -70.0000 : * ] noreverse nowriteback
set palette positive nops_allcF maxcolors 0 gamma 1.5 color model HSV 
set palette functions gray*0.75, 0.5, 0.99
unset colorbox
r = 0.01
types = 6
keyx = -137.0
keyy = -15.0
keyr = 25.0
i = 5
plot 'world.dat' with filledcurves lc rgb "light-green" notit,      'energy_circles.dat' using 2:1:(sqrt($9)*r):6:($6+$7):5             with circles lc pal fs solid 1.0 border rgb "gray",     for [i=0:types-1] '' using (keyx):(keyy):(keyr-5):(-(i+1)*360./types):(-(i)*360./types):5             every ::i::i with circles lc pal fs solid 1.0 border rgb "gray",     for [i=0:types-1] '' using             (keyx+keyr*cos(-(i+0.5)*360./types)):(keyy+keyr*sin(-(i+0.5)*360./types)):4             every ::i::i with labels