def load_and_normalize(filename):
"""
Load curve from file, center on mean, scale such that height is unity.
"""
x, y = _load_raw_data(DATA_FOLDER + filename, 'c0')
c0 = sample_discrete_curve(x, y)
c0.translate(-c0[0, :])
w, h = c0.dimensions()
c0.scale(1/h)
c0.translate(-c0.mean())
return c0
def sample_from_curve(c0):
"Uniformize number of sample points."
c1 = sample_discrete_curve(c0.points[:, 0], c0.points[:, 1], N=100)
return c1
