# set terminal pngcairo transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 # set output 'pointsize.2.png' unset border unset key set view map set noxtics set noytics set noztics set title "splot with variable size points\nit is possible to specify size and color separately" 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