def test_skewed(self):
np.random.seed(1312)
bins, n = auto_derived_lags(np.random.gamma(10, 20, 500), 'doane', 100)
# doane should condense to 6 here
self.assertTrue(n == 6)
assert_array_almost_equal(bins,
np.array(
[75.6, 80.4, 85.3, 90.2, 95.1, 100.]),
decimal=1)
def test_auto(self):
np.random.seed(42)
bins, n = auto_derived_lags(np.random.normal(10, 2, 1000), 'sturges',
None)
# sturges should find 11 classes
self.assertTrue(n == 11)
assert_array_almost_equal(bins,
np.array([
4.8, 6.1, 7.4, 8.7, 10., 11.3, 12.5,
13.8, 15.1, 16.4, 17.7
]),
decimal=1)