def test___call__(self):
"""
Tests :func:`colour.algebra.extrapolation.Extrapolator.__call__`
method.
"""
extrapolator = Extrapolator(
LinearInterpolator(
np.array([5, 6, 7]),
np.array([5, 6, 7])))
np.testing.assert_almost_equal(extrapolator((4, 8)), (4, 8))
self.assertEqual(extrapolator(4), 4)
extrapolator = Extrapolator(
LinearInterpolator(
np.array([3, 4, 5]),
np.array([1, 2, 3])),
method='Constant')
np.testing.assert_almost_equal(extrapolator((0.1, 0.2, 8, 9)),
(1, 1, 3, 3))
self.assertEqual(extrapolator(0.1), 1.)
extrapolator = Extrapolator(
LinearInterpolator(
np.array([3, 4, 5]),
np.array([1, 2, 3])),
method='Constant',
left=0)
np.testing.assert_almost_equal(extrapolator((0.1, 0.2, 8, 9)),
(0, 0, 3, 3))
self.assertEqual(extrapolator(0.1), 0)
extrapolator = Extrapolator(
LinearInterpolator(
np.array([3, 4, 5]),
np.array([1, 2, 3])),
method='Constant',
right=0)
np.testing.assert_almost_equal(extrapolator((0.1, 0.2, 8, 9)),
(1, 1, 0, 0))
self.assertEqual(extrapolator(9), 0)
extrapolator = Extrapolator(
CubicSplineInterpolator(
np.array([3, 4, 5, 6]),
np.array([1, 2, 3, 4])))
np.testing.assert_almost_equal(extrapolator((0.1, 0.2, 8.0, 9.0)),
(-1.9, -1.8, 6.0, 7.0))
self.assertEqual(extrapolator(9), 7)
extrapolator = Extrapolator(
PchipInterpolator(
np.array([3, 4, 5]),
np.array([1, 2, 3])))
np.testing.assert_almost_equal(extrapolator((0.1, 0.2, 8.0, 9.0)),
(-1.9, -1.8, 6.0, 7.0))
self.assertEqual(extrapolator(9), 7.)
def test_method(self):
"""
Tests :func:`colour.algebra.extrapolation.Extrapolator.method`
property.
"""
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])))
self.assertEqual(extrapolator.method, 'linear')
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])),
method='Constant')
self.assertEqual(extrapolator.method, 'constant')
def test_method(self):
"""
Test :attr:`colour.algebra.extrapolation.Extrapolator.method`
property.
"""
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])))
self.assertEqual(extrapolator.method, "linear")
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])),
method="Constant",
)
self.assertEqual(extrapolator.method, "constant")
def test__call__(self):
"""
Test :meth:`colour.algebra.interpolation.LinearInterpolator.__call__`
method.
"""
interval = 0.1
x = np.arange(len(DATA_POINTS_A))
linear_interpolator = LinearInterpolator(x, DATA_POINTS_A)
for i, value in enumerate(
np.arange(0, len(DATA_POINTS_A) - 1 + interval, interval)
):
self.assertAlmostEqual(
DATA_POINTS_A_LINEAR_INTERPOLATED_10_SAMPLES[i],
linear_interpolator(value),
places=7,
)
np.testing.assert_almost_equal(
linear_interpolator(
np.arange(0, len(DATA_POINTS_A) - 1 + interval, interval)
),
DATA_POINTS_A_LINEAR_INTERPOLATED_10_SAMPLES,
)
def test_interpolator(self):
"""
Tests :func:`colour.algebra.extrapolation.Extrapolator.interpolator`
property.
"""
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])))
self.assertIsInstance(extrapolator.interpolator, LinearInterpolator)
def test_right(self):
"""
Tests :func:`colour.algebra.extrapolation.Extrapolator.right`
property.
"""
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])),
right=0)
self.assertEqual(extrapolator.right, 0)
def test_left(self):
"""
Test :attr:`colour.algebra.extrapolation.Extrapolator.left`
property.
"""
extrapolator = Extrapolator(
LinearInterpolator(np.array([5, 6, 7]), np.array([5, 6, 7])),
left=0,
)
self.assertEqual(extrapolator.left, 0)
def test_raise_exception___call__(self):
"""
Tests :func:`colour.algebra.interpolation.LinearInterpolator.__call__`
method raised exception.
"""
x = y = np.linspace(0, 1, 10)
linear_interpolator = LinearInterpolator(x, y)
self.assertRaises(ValueError, linear_interpolator, -1)
self.assertRaises(ValueError, linear_interpolator, 11)
def _log_decoding_FilmicPro6_interpolator():
"""
Returns the *FiLMiC Pro 6* log decoding curve / electro-optical transfer
function interpolator and caches it if not existing.
Returns
-------
Extrapolator
*FiLMiC Pro 6* log decoding curve / electro-optical transfer
function interpolator.
"""
global _LOG_DECODING_FILMICPRO_INTERPOLATOR_CACHE
t = np.arange(0, 1, 0.0001)
if _LOG_DECODING_FILMICPRO_INTERPOLATOR_CACHE is None:
_LOG_DECODING_FILMICPRO_INTERPOLATOR_CACHE = Extrapolator(
LinearInterpolator(log_encoding_FilmicPro6(t), t))
return _LOG_DECODING_FILMICPRO_INTERPOLATOR_CACHE
def test___call__(self):
"""
Tests :func:`colour.algebra.interpolation.LinearInterpolator.__call__`
method.
"""
steps = 0.1
x = np.arange(len(POINTS_DATA_A))
linear_interpolator = LinearInterpolator(x, POINTS_DATA_A)
for i, value in enumerate(
np.arange(0, len(POINTS_DATA_A) - 1 + steps, steps)):
self.assertAlmostEqual(
LINEAR_INTERPOLATED_POINTS_DATA_A_10_SAMPLES[i],
linear_interpolator(value),
places=7)
np.testing.assert_almost_equal(
linear_interpolator(
np.arange(0, len(POINTS_DATA_A) - 1 + steps, steps)),
LINEAR_INTERPOLATED_POINTS_DATA_A_10_SAMPLES)
