mszep

from pylab import *

def generate_lines():
  f = open("test.dat", 'r')
  EOF = False
  [x, y, z] = [float(n) for n in f.next().split()] # read in the first row
  while not EOF:
    stab = (z < 0.0)
    xs = [x]
    ys = [y]