set size 0.5,0.3
set ytics (0,200,400)
set xtics (0,200,400,600,800)
set xrange[0:850]
set yrange [0:450]
set xlabel "dataset size"
set ylabel "plateau"
set key top left
set terminal postscript eps
set output "plateaudots.eps"

plot "plateaukt.dat" using 4:($10/10*$4) title "j48" with points 1,     "plateaukt.dat" using 4:($8/10*$4) title "nbk" with points 4