# set terminal png transparent nocrop enhanced font arial 8 size 420,320 # 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