reset
set xrange [-1.5:1.5]
set yrange [-1.5:1.5]
set xlabel "v1"
set ylabel "v2"
set nokey
plot "fold3.00-1.25-0.05-1.dat" u 2:3 w lines
rep  "fold3.00-1.25-0.05-2.dat" u 2:3 w lines
rep  "fold3.00-1.25-0.05-3.dat" u 2:3 w lines
rep  "fold3.00-1.25-0.05-4.dat" u 2:3 w lines
rep  "fold3.00-1.25-0.05-5.dat" u 2:3 w lines
rep  "fold3.00-1.25-0.05-6.dat" u 2:3 w lines