# set terminal pngcairo  font "arial,8" size 500, 300 
# set output 'circles.1.png'
set style fill   solid 1.00 border -1
unset key
set object 10 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [0:20]  front lw 2.0 fc  rgb "red"  fillstyle   solid 1.00 border -1
set object 11 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [20:50]  front lw 2.0 fc  rgb "orange"  fillstyle   solid 1.00 border -1
set object 12 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [50:90]  front lw 2.0 fc  rgb "yellow"  fillstyle   solid 1.00 border -1
set object 13 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [90:120]  front lw 2.0 fc  rgb "forest-green"  fillstyle   solid 1.00 border -1
set object 14 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [120:190]  front lw 2.0 fc  rgb "dark-turquoise"  fillstyle   solid 1.00 border -1
set object 15 circle center screen 0.18, 0.32, 0 size screen 0.1 arc [190:360]  front lw 2.0 fc  rgb "dark-magenta"  fillstyle   solid 1.00 border -1
set object 20 rect from graph 0, 0, 0 to graph 1, 1, 0 behind lw 1.0 fc  rgb "cyan"  fillstyle   solid 0.20 border -1
set style data linespoints
set noxtics
set noytics
set rrange [ * : * ] noreverse nowriteback  # (currently [8.98847e+307:-8.98847e+307] )
set trange [ * : * ] noreverse nowriteback  # (currently [-5.00000:5.00000] )
set xlabel "Note that overlapping transparent circles produce a darker area" 
set xrange [ * : * ] noreverse nowriteback  # (currently [-179.870:188.870] )
set x2range [ * : * ] noreverse nowriteback  # (currently [-179.870:188.870] )
set yrange [ -70.0000 : * ] noreverse nowriteback  # (currently [:83.5400] )
set y2range [ * : * ] noreverse nowriteback  # (currently [-70.0000:83.5400] )
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