def test_ndcube_components_after_slicing():
"""Tests all cube components are correctly propagated by slicing."""
# Slice test object
item = tuple([slice(0, 1)] * 3)
sliced_cube = spectrogram_instrument_axes[item]
# Generate expected result.
data = spectrogram_instrument_axes.data[item]
uncertainty = spectrogram_instrument_axes.uncertainty[item]
mask = spectrogram_instrument_axes.mask[item]
extra_coords = list(EXTRA_COORDS0)
ec_axis = 0
ec0 = list(extra_coords[0])
ec0[-1] = ec0[-1][item[ec_axis]]
ec1 = list(extra_coords[1])
ec1[-1] = ec1[-1][item[ec_axis]]
extra_coords = (tuple(ec0), tuple(ec1))
wcs = spectrogram_instrument_axes.wcs[item]
expected_cube = SpectrogramCube(
data=data,
wcs=wcs,
uncertainty=uncertainty,
mask=mask,
meta=spectrogram_instrument_axes.meta,
unit=spectrogram_instrument_axes.unit,
extra_coords=extra_coords,
missing_axes=spectrogram_instrument_axes.missing_axes,
instrument_axes=spectrogram_instrument_axes.instrument_axes)
assert_cubes_equal(sliced_cube, expected_cube)
def test_crop_by_extra_coords_shared_axis(ndcube_3d_ln_lt_l_ec_sharing_axis):
cube = ndcube_3d_ln_lt_l_ec_sharing_axis
lower_corner = (1 * u.m, 1 * u.keV)
upper_corner = (2 * u.m, 2 * u.keV)
output = cube.crop(lower_corner, upper_corner, wcs=cube.extra_coords)
expected = cube[:, 1:3]
helpers.assert_cubes_equal(output, expected)
def test_crop(ndcube_4d_ln_lt_l_t):
intervals = ndcube_4d_ln_lt_l_t.wcs.array_index_to_world([1, 2], [0, 1], [0, 1], [0, 2])
lower_corner = [coord[0] for coord in intervals]
upper_corner = [coord[-1] for coord in intervals]
expected = ndcube_4d_ln_lt_l_t[1:3, 0:2, 0:2, 0:3]
output = ndcube_4d_ln_lt_l_t.crop(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, expected)
def test_crop_by_values_1d_dependent(ndcube_4d_ln_lt_l_t):
cube_1d = ndcube_4d_ln_lt_l_t[0, :, 0, 0]
lat_range, lon_range = cube_1d.wcs.low_level_wcs.array_index_to_world_values([0, 1])
lower_corner = [lat_range[0] * u.deg, lon_range[0] * u.deg]
upper_corner = [lat_range[-1] * u.deg, lon_range[-1] * u.deg]
expected = cube_1d[0:2]
output = cube_1d.crop_by_values(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, expected)
def test_crop_tuple_non_tuple_input(ndcube_2d_ln_lt):
cube = ndcube_2d_ln_lt
frame = astropy.wcs.utils.wcs_to_celestial_frame(cube.wcs)
lower_corner = SkyCoord(Tx=359.99667, Ty=-0.0011111111, unit="deg", frame=frame)
upper_corner = SkyCoord(Tx=0.0044444444, Ty=0.0011111111, unit="deg", frame=frame)
cropped_by_tuples = cube.crop((lower_corner,), (upper_corner,))
cropped_by_coords = cube.crop(lower_corner, upper_corner)
helpers.assert_cubes_equal(cropped_by_tuples, cropped_by_coords)
def test_crop_by_values_with_nones(ndcube_4d_ln_lt_l_t):
lower_corner = [None] * 4
lower_corner[0] = 0.5 * u.min
upper_corner = [None] * 4
upper_corner[0] = 1.1 * u.min
expected = ndcube_4d_ln_lt_l_t[:, :, :, 0:3]
output = ndcube_4d_ln_lt_l_t.crop_by_values(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, expected)
def test_crop_by_values_with_equivalent_units(ndcube_2d_ln_lt):
# test cropping when passed units that are not identical to the cube wcs.world_axis_units
intervals = ndcube_2d_ln_lt.wcs.array_index_to_world_values([0, 3], [1, 6])
lower_corner = [(coord[0] * u.deg).to(u.arcsec) for coord in intervals]
upper_corner = [(coord[-1] * u.deg).to(u.arcsec) for coord in intervals]
expected = ndcube_2d_ln_lt[0:4, 1:7]
output = ndcube_2d_ln_lt.crop_by_values(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, expected)
def test_crop_by_extra_coords(ndcube_3d_ln_lt_l_ec_time):
cube = ndcube_3d_ln_lt_l_ec_time
lower_corner = (Time("2000-01-01T15:00:00", scale="utc",
format="fits"), None)
upper_corner = (Time("2000-01-01T20:00:00", scale="utc",
format="fits"), None)
output = cube.crop(lower_corner, upper_corner, wcs=cube.extra_coords)
expected = cube[0]
helpers.assert_cubes_equal(output, expected)
def test_crop_with_nones(ndcube_4d_ln_lt_l_t):
lower_corner = [None] * 3
upper_corner = [None] * 3
interval0 = ndcube_4d_ln_lt_l_t.wcs.array_index_to_world([1, 2], [0, 1], [0, 1], [0, 2])[0]
lower_corner[0] = interval0[0]
upper_corner[0] = interval0[-1]
expected = ndcube_4d_ln_lt_l_t[:, :, :, 0:3]
output = ndcube_4d_ln_lt_l_t.crop(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, expected)
def test_crop_by_extra_coords_values(ndcube_3d_ln_lt_l_ec_time):
cube = ndcube_3d_ln_lt_l_ec_time
lower_corner = (3 * 60 * 60 * u.s, 0 * u.pix)
upper_corner = (8 * 60 * 60 * u.s, 2 * u.pix)
output = cube.crop_by_values(lower_corner,
upper_corner,
wcs=cube.extra_coords)
expected = cube[0]
helpers.assert_cubes_equal(output, expected)
def test_crop_by_values(ndcube_4d_ln_lt_l_t):
intervals = ndcube_4d_ln_lt_l_t.wcs.array_index_to_world_values([1, 2], [0, 1], [0, 1], [0, 2])
units = [u.min, u.m, u.deg, u.deg]
lower_corner = [coord[0] * unit for coord, unit in zip(intervals, units)]
upper_corner = [coord[-1] * unit for coord, unit in zip(intervals, units)]
# Ensure some quantities are in units different from each other
# and those stored in the WCS.
lower_corner[0] = lower_corner[0].to(u.ms)
lower_corner[-1] = lower_corner[-1].to(u.arcsec)
upper_corner[-1] = upper_corner[-1].to(u.arcsec)
expected = ndcube_4d_ln_lt_l_t[1:3, 0:2, 0:2, 0:3]
output = ndcube_4d_ln_lt_l_t.crop_by_values(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, expected)
def test_crop_by_extra_coords_all_axes_with_coord(
ndcube_3d_ln_lt_l_ec_all_axes):
cube = ndcube_3d_ln_lt_l_ec_all_axes
interval0 = Time(["2000-01-01T15:00:00", "2000-01-01T20:00:00"],
scale="utc",
format="fits")
interval1 = [0, 1] * u.pix
interval2 = [1, 3] * u.m
lower_corner = (interval0[0], interval1[0], interval2[0])
upper_corner = (interval0[1], interval1[1], interval2[1])
output = cube.crop(lower_corner, upper_corner, wcs=cube.extra_coords)
expected = cube[0, 0:2, 1:4]
helpers.assert_cubes_equal(output, expected)
def test_crop_by_extra_coords_values_all_axes_with_coord(
ndcube_3d_ln_lt_l_ec_all_axes):
cube = ndcube_3d_ln_lt_l_ec_all_axes
interval0 = [3 * 60 * 60, 8 * 60 * 60] * u.s
interval1 = [0, 1] * u.pix
interval2 = [1, 3] * u.m
lower_corner = (interval0[0], interval1[0], interval2[0])
upper_corner = (interval0[1], interval1[1], interval2[1])
output = cube.crop_by_values(lower_corner,
upper_corner,
wcs=cube.extra_coords)
expected = cube[0, 0:2, 1:4]
helpers.assert_cubes_equal(output, expected)
def test_crop_by_coords_with_units(ndcube_4d_ln_lt_l_t):
intervals = ndcube_4d_ln_lt_l_t.wcs.array_index_to_world_values([1, 2], [0, 1], [0, 1], [0, 2])
units = [u.min, u.m, u.deg, u.deg]
lower_corner = [coord[0] for coord in intervals]
upper_corner = [coord[-1] for coord in intervals]
lower_corner[0] *= u.min
upper_corner[0] *= u.min
lower_corner[1] *= u.m
upper_corner[1] *= u.m
lower_corner[2] *= u.deg
units[0] = None
expected = ndcube_4d_ln_lt_l_t[1:3, 0:2, 0:2, 0:3]
output = ndcube_4d_ln_lt_l_t.crop_by_values(lower_corner, upper_corner, units=units)
helpers.assert_cubes_equal(output, expected)
def test_collection_pop(collection, popped_key, expected_popped,
expected_collection):
popped_collection = collection.copy()
output = popped_collection.pop(popped_key)
helpers.assert_cubes_equal(output, expected_popped)
helpers.assert_collections_equal(popped_collection, expected_collection)
def test_slice_cube_from_collection(item, collection, expected):
helpers.assert_cubes_equal(collection[item], expected)
def test_ndcubeordered(test_input, expected):
helpers.assert_cubes_equal(
NDCubeOrdered(test_input[0], test_input[1], mask=test_input[2],
uncertainty=test_input[3], extra_coords=test_input[4]),
expected)
def test_crop_by_extra_coord(test_input, expected):
helpers.assert_cubes_equal(
test_input[0].crop_by_extra_coord(*tuple(test_input[1:])), expected)
def test_crop_by_coords(test_input, expected):
helpers.assert_cubes_equal(
test_input[0].crop_by_coords(*test_input[1:]), expected)
def test_crop_by_values_all_nones(ndcube_4d_ln_lt_l_t):
lower_corner = [None] * 4
upper_corner = [None] * 4
output = ndcube_4d_ln_lt_l_t.crop_by_values(lower_corner, upper_corner)
helpers.assert_cubes_equal(output, ndcube_4d_ln_lt_l_t)
def test_ndcubeordered(test_input, expected):
helpers.assert_cubes_equal(
NDCubeOrdered(test_input[0], test_input[1], mask=test_input[2],
uncertainty=test_input[3], extra_coords=test_input[4]),
expected)
def test_crop_1d_dependent(ndcube_4d_ln_lt_l_t):
cube_1d = ndcube_4d_ln_lt_l_t[0, :, 0, 0]
sky_range = cube_1d.wcs.array_index_to_world([0, 1])
expected = cube_1d[0:2]
output = cube_1d.crop([sky_range[0]], [sky_range[-1]])
helpers.assert_cubes_equal(output, expected)
def test_crop_1d_independent(ndcube_4d_ln_lt_l_t):
cube_1d = ndcube_4d_ln_lt_l_t[0, 0, :, 0]
wl_range = SpectralCoord([3e-11, 4.5e-11], unit=u.m)
expected = cube_1d[0:2]
output = cube_1d.crop([wl_range[0]], [wl_range[-1]])
helpers.assert_cubes_equal(output, expected)
def test_crop_by_extra_coord(test_input, expected):
helpers.assert_cubes_equal(
test_input[0].crop_by_extra_coord(*tuple(test_input[1:])), expected)
def test_IRISSpectrogramCube_convert_to(input_cube, new_unit, expected_cube):
output_cube = input_cube.convert_to(new_unit)
assert_cubes_equal(output_cube, expected_cube)
def test_crop_reduces_dimensionality(ndcube_4d_ln_lt_l_t):
cube = ndcube_4d_ln_lt_l_t
point = (None, SpectralCoord([3e-11], unit=u.m), None)
expected = cube[:, :, 0, :]
output = cube.crop(point)
helpers.assert_cubes_equal(output, expected)
def test_IRISSpectrogramCube_apply_exposure_time_correction(input_cube, undo,
force, expected_cube):
output_cube = input_cube.apply_exposure_time_correction(undo=undo, force=force)
assert_cubes_equal(output_cube, expected_cube)
def test_crop_by_coords(test_input, expected):
helpers.assert_cubes_equal(
test_input[0].crop_by_coords(*test_input[1:]), expected)
