/
test_galaxy_data.py
274 lines (193 loc) · 14.7 KB
/
test_galaxy_data.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
import numpy as np
import pytest
from autolens import exc
from autolens.data.array.util import grid_util
from autolens.data.array import mask as msk, scaled_array as sca
from autolens.model.galaxy import galaxy as g, galaxy_data as gd
from autolens.model.profiles import light_profiles as lp
from autolens.model.profiles import mass_profiles as mp
from test.mock.mock_galaxy import MockGalaxy
@pytest.fixture(name='image')
def make_image():
return sca.ScaledSquarePixelArray(array=np.ones((4, 4)), pixel_scale=3.0)
@pytest.fixture(name="mask")
def make_mask():
return msk.Mask(np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]]), pixel_scale=3.0)
@pytest.fixture(name="galaxy_data")
def make_galaxy_data(image, mask):
noise_map = sca.ScaledSquarePixelArray(array=2.0*np.ones((4,4)), pixel_scale=3.0)
galaxy_data = gd.GalaxyData(image=image, noise_map=noise_map, pixel_scale=3.0)
return gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, use_intensities=True)
class TestGalaxyFitData(object):
def test__image_and_mapper(self, galaxy_data):
assert galaxy_data.pixel_scale == 3.0
assert (galaxy_data.image == np.ones((4,4))).all()
assert (galaxy_data.noise_map == 2.0 * np.ones((4,4))).all()
assert (galaxy_data.mask == np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]])).all()
assert (galaxy_data.image_1d == np.ones(4)).all()
assert (galaxy_data.noise_map_1d == 2.0* np.ones(4)).all()
assert (galaxy_data.mask_1d == np.array([False, False, False, False])).all()
def test__grid_stack(self, galaxy_data):
assert galaxy_data.grid_stack.regular.shape == (4, 2)
assert (galaxy_data.grid_stack.regular == np.array([[1.5, -1.5], [1.5, 1.5],
[-1.5, -1.5], [-1.5, 1.5]])).all()
assert (galaxy_data.grid_stack.sub == np.array([[2.0, -2.0], [2.0, -1.0], [1.0, -2.0], [1.0, -1.0],
[2.0, 1.0], [2.0, 2.0], [1.0, 1.0], [1.0, 2.0],
[-1.0, -2.0], [-1.0, -1.0], [-2.0, -2.0], [-2.0, -1.0],
[-1.0, 1.0], [-1.0, 2.0], [-2.0, 1.0], [-2.0, 2.0]])).all()
def test__padded_grid_stack(self, galaxy_data):
padded_image_util = grid_util.regular_grid_1d_masked_from_mask_pixel_scales_and_origin(mask=np.full((4, 4), False),
pixel_scales=galaxy_data.image.pixel_scales)
assert (galaxy_data.padded_grid_stack.regular == padded_image_util).all()
assert galaxy_data.padded_grid_stack.regular.image_shape == (4, 4)
assert galaxy_data.padded_grid_stack.regular.padded_shape == (4, 4)
padded_sub_util = grid_util.sub_grid_1d_masked_from_mask_pixel_scales_and_sub_grid_size(
mask=np.full((4, 4), False), pixel_scales=galaxy_data.image.pixel_scales,
sub_grid_size=galaxy_data.grid_stack.sub.sub_grid_size)
assert galaxy_data.padded_grid_stack.sub == pytest.approx(padded_sub_util, 1e-4)
assert galaxy_data.padded_grid_stack.sub.image_shape == (4, 4)
assert galaxy_data.padded_grid_stack.sub.padded_shape == (4, 4)
def test__galaxy_data_intensities(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
galaxy_fit_data = gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2, use_intensities=True)
assert galaxy_fit_data.pixel_scale == 3.0
assert (galaxy_fit_data.image == np.ones((4, 4))).all()
assert (galaxy_fit_data.noise_map == 2.0 * np.ones((4,4))).all()
assert (galaxy_fit_data.mask == np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]])).all()
assert (galaxy_fit_data.image_1d == np.ones(4)).all()
assert (galaxy_fit_data.noise_map_1d == 2.0* np.ones(4)).all()
assert (galaxy_fit_data.mask_1d == np.array([False, False, False, False])).all()
galaxy = MockGalaxy(value=1, shape=4)
intensities = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (intensities == np.array([1.0, 1.0, 1.0, 1.0])).all()
galaxy = g.Galaxy(light=lp.SphericalSersic(intensity=1.0))
intensities_gal = galaxy.intensities_from_grid(grid=galaxy_fit_data.grid_stack.sub)
intensities_gal = galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(sub_array=intensities_gal)
intensities_gd = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (intensities_gal == intensities_gd).all()
def test__galaxy_data_surface_density(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
galaxy_fit_data = gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2, use_surface_density=True)
assert galaxy_fit_data.pixel_scale == 3.0
assert (galaxy_fit_data.image == np.ones((4, 4))).all()
assert (galaxy_fit_data.noise_map == 2.0 * np.ones((4,4))).all()
assert (galaxy_fit_data.mask == np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]])).all()
assert (galaxy_fit_data.image_1d == np.ones(4)).all()
assert (galaxy_fit_data.noise_map_1d == 2.0* np.ones(4)).all()
assert (galaxy_fit_data.mask_1d == np.array([False, False, False, False])).all()
galaxy = MockGalaxy(value=1, shape=4)
surface_density = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (surface_density == np.array([1.0, 1.0, 1.0, 1.0])).all()
galaxy = g.Galaxy(mass=mp.SphericalIsothermal(einstein_radius=1.0))
surface_density_gal = galaxy.surface_density_from_grid(grid=galaxy_fit_data.grid_stack.sub)
surface_density_gal = galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(sub_array=surface_density_gal)
surface_density_gd = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (surface_density_gal == surface_density_gd).all()
def test__galaxy_data_potential(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
galaxy_fit_data = gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2, use_potential=True)
assert galaxy_fit_data.pixel_scale == 3.0
assert (galaxy_fit_data.image == np.ones((4, 4))).all()
assert (galaxy_fit_data.noise_map == 2.0 * np.ones((4,4))).all()
assert (galaxy_fit_data.mask == np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]])).all()
assert (galaxy_fit_data.image_1d == np.ones(4)).all()
assert (galaxy_fit_data.noise_map_1d == 2.0* np.ones(4)).all()
assert (galaxy_fit_data.mask_1d == np.array([False, False, False, False])).all()
galaxy = MockGalaxy(value=1, shape=4)
potential = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (potential == np.array([1.0, 1.0, 1.0, 1.0])).all()
galaxy = g.Galaxy(mass=mp.SphericalIsothermal(einstein_radius=1.0))
potential_gal = galaxy.potential_from_grid(grid=galaxy_fit_data.grid_stack.sub)
potential_gal = galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(sub_array=potential_gal)
potential_gd = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (potential_gal == potential_gd).all()
def test__galaxy_data_deflections_y(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
galaxy_fit_data = gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2, use_deflections_y=True)
assert galaxy_fit_data.pixel_scale == 3.0
assert (galaxy_fit_data.image == np.ones((4, 4))).all()
assert (galaxy_fit_data.noise_map == 2.0 * np.ones((4,4))).all()
assert (galaxy_fit_data.mask == np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]])).all()
assert (galaxy_fit_data.image_1d == np.ones(4)).all()
assert (galaxy_fit_data.noise_map_1d == 2.0* np.ones(4)).all()
assert (galaxy_fit_data.mask_1d == np.array([False, False, False, False])).all()
galaxy = MockGalaxy(value=1, shape=4)
deflections_y = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (deflections_y == np.array([1.0, 1.0, 1.0, 1.0])).all()
galaxy = g.Galaxy(mass=mp.SphericalIsothermal(einstein_radius=1.0))
deflections_gal = galaxy.deflections_from_grid(grid=galaxy_fit_data.grid_stack.sub)
deflections_gal = np.asarray([galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(deflections_gal[:, 0]),
galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(deflections_gal[:, 1])]).T
deflections_gd = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (deflections_gal[:,0] == deflections_gd).all()
def test__galaxy_data_deflections_x(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
galaxy_fit_data = gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2, use_deflections_x=True)
assert galaxy_fit_data.pixel_scale == 3.0
assert (galaxy_fit_data.image == np.ones((4, 4))).all()
assert (galaxy_fit_data.noise_map == 2.0 * np.ones((4,4))).all()
assert (galaxy_fit_data.mask == np.array([[True, True, True, True],
[True, False, False, True],
[True, False, False, True],
[True, True, True, True]])).all()
assert (galaxy_fit_data.image_1d == np.ones(4)).all()
assert (galaxy_fit_data.noise_map_1d == 2.0* np.ones(4)).all()
assert (galaxy_fit_data.mask_1d == np.array([False, False, False, False])).all()
galaxy = MockGalaxy(value=1, shape=4)
deflections_x = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (deflections_x == np.array([1.0, 1.0, 1.0, 1.0])).all()
galaxy = g.Galaxy(mass=mp.SphericalIsothermal(einstein_radius=1.0))
deflections_gal = galaxy.deflections_from_grid(grid=galaxy_fit_data.grid_stack.sub)
deflections_gal = np.asarray([galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(deflections_gal[:, 0]),
galaxy_fit_data.grid_stack.sub.sub_data_to_regular_data(deflections_gal[:, 1])]).T
deflections_gd = galaxy_fit_data.profile_quantity_from_galaxy_and_sub_grid(galaxies=[galaxy],
sub_grid=galaxy_fit_data.grid_stack.sub)
assert (deflections_gal[:,1] == deflections_gd).all()
def test__no_use_method__raises_exception(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
with pytest.raises(exc.GalaxyException):
gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2)
def test__multiple_use_methods__raises_exception(self, image, mask):
galaxy_data = gd.GalaxyData(image=image, noise_map=2.0*np.ones((4, 4)), pixel_scale=3.0)
with pytest.raises(exc.GalaxyException):
gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2,
use_intensities=True, use_surface_density=True)
with pytest.raises(exc.GalaxyException):
gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2,
use_intensities=True, use_potential=True)
with pytest.raises(exc.GalaxyException):
gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2,
use_intensities=True, use_deflections_y=True)
with pytest.raises(exc.GalaxyException):
gd.GalaxyFitData(galaxy_data=galaxy_data, mask=mask, sub_grid_size=2,
use_intensities=True, use_surface_density=True, use_potential=True)
with pytest.raises(exc.GalaxyException):
gd.GalaxyFitData(galaxy_data=galaxy_data,mask=mask, sub_grid_size=2,
use_intensities=True, use_surface_density=True, use_potential=True, use_deflections_x=True)