/// file functions
proc VecToFile () { localobj localfile, values, time
strdef filename
filename = $s1
values = $o2
time = $o3
localfile = new File(filename)
localfile.wopen()
for l = 1, values.size() -1 {
localfile.printf("%g %g\n", time.x(l), values.x(l))
}
localfile.close()
}