set term png large enhanced
set output "_a.png"
#set size 0.8,0.5
unset key
set xlabel "residue index"
set ylabel "residue index"
plot "< awk -f ../files/peaks.awk _a.nmr | grep '1$'" u 2:3:1 lc variable pt 1 lw 2,"< awk -f ../files/peaks.awk _a.nmr | grep '0$'" u 2:3:1 pt 5 ps 1 lc -1
set output
#    EOF