def test_no_scaling(self) -> None:
gs = GeomScaler()
gs.fit(square)
test_square = numpy.copy(square)
test_square[..., :2] -= 0.5
normalized_without_scaling_square = gs.transform(test_square,
with_std=False)
numpy.testing.assert_array_equal(test_square,
normalized_without_scaling_square)
def test_zero_padded_transform(self) -> None:
gs = GeomScaler()
gs.fit(square)
zero_padding = numpy.repeat(square[:1, -1], repeats=4, axis=0)
padded_square = numpy.concatenate([square[0], zero_padding], axis=0)
normalized_square = gs.transform(numpy.array([padded_square]),
padding_type='zero')
numpy.testing.assert_array_equal(normalized_square[0, -4:],
zero_padding)
def test_upsized_transform(self) -> None:
gs = GeomScaler()
square_0 = square[0] * 2
square_0[:4, 2] = 1.
square_0[4, 4] = 1.
gs.fit(numpy.array([square_0]))
n_square = gs.transform(numpy.array([square_0]))
numpy.testing.assert_array_equal(n_square, normalized_square)
coords = [geom[:, :2].flatten() for geom in n_square]
coords = [item for sublist in coords for item in sublist]
std = numpy.std(coords)
numpy.testing.assert_array_almost_equal(std, 1., 1)
def test_transform(self) -> None:
with self.subTest('It rejects unfitted geometry scalers on transform'):
with self.assertRaises(AssertionError):
gs = GeomScaler()
gs.transform(square)
with self.subTest('It transforms a sample square'):
gs = GeomScaler()
# scaled_square = square[0] * 2
# scaled_square[4, 12] = 1.
gs.fit(square)
n_square = gs.transform(square)
numpy.testing.assert_array_equal(n_square, normalized_square)
coords = [geom[:, :2].flatten() for geom in n_square]
coords = [item for sublist in coords for item in sublist]
std = numpy.std(coords)
numpy.testing.assert_array_almost_equal(std, 1., 1)
def test_no_centering(self) -> None:
gs = GeomScaler()
gs.fit(square)
test_square = numpy.copy(square)
test_square[..., :2] += 2
gs.scale_factor = 1. # manually override scale for testing
normalized_without_centering_square = gs.transform(test_square,
with_mean=False)
numpy.testing.assert_array_equal(test_square,
normalized_without_centering_square)
def test_scaling_square_dup_nodes(self) -> None:
gs = GeomScaler()
gs.fit(square_duplicate_nodes)
self.assertEqual(gs.scale_factor, 0.5)
def test_scaling_square(self) -> None:
gs = GeomScaler()
gs.fit(square)
self.assertEqual(gs.scale_factor, 0.5)