# set terminal svg size 600,400 dynamic enhanced fname 'arial'  fsize 10 mousing name "circles_1" butt solid 
# set output 'circles.1.svg'
set style fill   solid 1.00 border lt -1
unset key
set object 10 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [0:20] 
set object 10 front lw 1.0 fc  rgb "red"  fillstyle   solid 1.00 border lt -1
set object 11 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [20:50] 
set object 11 front lw 1.0 fc  rgb "orange"  fillstyle   solid 1.00 border lt -1
set object 12 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [50:90] 
set object 12 front lw 1.0 fc  rgb "yellow"  fillstyle   solid 1.00 border lt -1
set object 13 circle center screen 0.1767, 0.342, 0 size screen 0.1 arc [90:120] 
set object 13 front lw 1.0 fc  rgb "forest-green"  fillstyle   solid 1.00 border lt -1
set object 14 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [120:190] 
set object 14 front lw 1.0 fc  rgb "dark-turquoise"  fillstyle   solid 1.00 border lt -1
set object 15 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [190:360] 
set object 15 front lw 1.0 fc  rgb "dark-magenta"  fillstyle   solid 1.00 border lt -1
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 xlabel "Note that overlapping transparent circles produce a darker area" 
set yrange [ -70.0000 : * ] noreverse nowriteback
plot 'world.dat' with filledcurves lc rgb "light-green" ,      'world.cor' using 1:2:(7.*rand(0)) with circles lt 3                  fs transparent solid 0.5 noborder