set size 0.5,0.5
set terminal postscript eps "Helvetica" 11
set output 'heart1-4.eps'
set key left top box
set title 'Heart (4, 59%)'
set ytics 500
set xtics 200
set xlabel "x"
set ylabel "position"
plot "resultsheart1-4.dat" using 1:2 title "before(22, 12)" with lines, \
 "resultsheart-4.dat" using 1:3 title "after(17, 8)" with lines