# set terminal svg size 600,400 dynamic enhanced font 'arial,10' mousing name "pointsize_2" butt dashlength 1.0 
# set output 'pointsize.2.svg'
unset border
unset key
set view map scale 1
set style data lines
unset xtics
unset ytics
unset ztics
set title "splot with variable size points\nit is possible to specify size and color separately" 
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
NO_ANIMATION = 1
## Last datafile plotted: "world.cor"
splot 'world.dat' using 1:2:(0) with lines lt 3,       'world.cor' using 1:2:(0.5-rand(0)):(5.*rand(0)) with points pt 5 ps var lt palette