Coverage for tests/test_ApplyApCorr.py: 19%
130 statements
« prev ^ index » next coverage.py v7.3.2, created at 2023-10-05 10:24 +0000
1# This file is part of meas_base.
2#
3# Developed for the LSST Data Management System.
4# This product includes software developed by the LSST Project
5# (https://www.lsst.org).
6# See the COPYRIGHT file at the top-level directory of this distribution
7# for details of code ownership.
8#
9# This program is free software: you can redistribute it and/or modify
10# it under the terms of the GNU General Public License as published by
11# the Free Software Foundation, either version 3 of the License, or
12# (at your option) any later version.
13#
14# This program is distributed in the hope that it will be useful,
15# but WITHOUT ANY WARRANTY; without even the implied warranty of
16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17# GNU General Public License for more details.
18#
19# You should have received a copy of the GNU General Public License
20# along with this program. If not, see <https://www.gnu.org/licenses/>.
22import unittest
24import numpy as np
26import lsst.utils.tests
27import lsst.geom
28import lsst.meas.base.tests
29import lsst.afw.image as afwImage
30import lsst.afw.table as afwTable
31import lsst.meas.base.applyApCorr as applyApCorr
32from lsst.afw.math import ChebyshevBoundedField
33from lsst.meas.base.apCorrRegistry import addApCorrName
36def initializeSourceCatalog(schema=None, name=None, instFlux=None, sigma=None, centroid=None):
37 instFluxName = name + "_instFlux"
38 instFluxErrName = name + "_instFluxErr"
39 instFluxKey = schema.find(instFluxName).key
40 centroidKey = afwTable.Point2DKey(schema["slot_Centroid"])
41 sourceCat = afwTable.SourceCatalog(schema)
42 source = sourceCat.addNew()
43 source.set(instFluxKey, instFlux)
44 source.set(instFluxErrName, sigma)
45 source.set(centroidKey, centroid)
46 return sourceCat
49class ApplyApCorrTestCase(lsst.meas.base.tests.AlgorithmTestCase, lsst.utils.tests.TestCase):
51 def setUp(self):
52 schema = afwTable.SourceTable.makeMinimalSchema()
53 names = ["test2", "test"]
54 for name in names:
55 addApCorrName(name)
56 schema.addField(name + "_instFlux", type=np.float64)
57 schema.addField(name + "_instFluxErr", type=np.float64)
58 schema.addField(name + "_flag", type=np.float64)
59 schema.addField(name + "_Centroid_x", type=np.float64)
60 schema.addField(name + "_Centroid_y", type=np.float64)
61 schema.getAliasMap().set('slot_Centroid', name + '_Centroid')
62 self.ap_corr_task = applyApCorr.ApplyApCorrTask(schema=schema)
63 self.name = name # just use 'test' prefix for most of the tests
64 self.schema = schema
66 def tearDown(self):
67 del self.schema
68 del self.ap_corr_task
70 def testAddFields(self):
71 # Check that the required fields have been added to the schema
72 self.assertIn(self.name + "_apCorr", self.schema.getNames())
73 self.assertIn(self.name + "_apCorrErr", self.schema.getNames())
74 self.assertIn(self.name + "_flag_apCorr", self.schema.getNames())
75 self.assertLess(self.schema.find("test_apCorr").key.getOffset(),
76 self.schema.find("test2_apCorr").key.getOffset())
78 def testSuccessUnflagged(self):
79 # Check that the aperture correction flag is set to False if aperture
80 # correction was successfully run
81 flagName = self.name + "_flag_apCorr"
82 flagKey = self.schema.find(flagName).key
83 source_test_instFlux = 5.1
84 source_test_centroid = lsst.geom.Point2D(5, 7.1)
85 sourceCat = initializeSourceCatalog(schema=self.schema, name=self.name, instFlux=source_test_instFlux,
86 sigma=0, centroid=source_test_centroid)
87 instFluxName = self.name + "_instFlux"
88 instFluxErrName = self.name + "_instFluxErr"
90 apCorrMap = afwImage.ApCorrMap()
91 bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.ExtentI(10, 10))
92 coefficients = np.ones((1, 1), dtype=np.float64)
93 coefficients_sigma = np.zeros((1, 1), dtype=np.float64)
94 apCorrMap[instFluxName] = ChebyshevBoundedField(bbox, coefficients)
95 apCorrMap[instFluxErrName] = ChebyshevBoundedField(bbox, coefficients_sigma)
96 self.ap_corr_task.run(sourceCat, apCorrMap)
97 self.assertFalse(sourceCat[flagKey])
99 def testFailureFlagged(self):
100 # Check that aperture correction flag is set to True if aperture
101 # correction is invalid (negative)
102 flagName = self.name + "_flag_apCorr"
103 flagKey = self.schema.find(flagName).key
104 source_test_instFlux = 5.2
105 source_test_centroid = lsst.geom.Point2D(5, 7.1)
106 sourceCat = initializeSourceCatalog(schema=self.schema, name=self.name, instFlux=source_test_instFlux,
107 sigma=0, centroid=source_test_centroid)
108 instFluxName = self.name + "_instFlux"
109 instFluxErrName = self.name + "_instFluxErr"
111 apCorrMap = afwImage.ApCorrMap()
112 bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.ExtentI(10, 10))
113 coefficients = -(np.ones((1, 1), dtype=np.float64))
114 coefficients_sigma = np.zeros((1, 1), dtype=np.float64)
115 apCorrMap[instFluxName] = ChebyshevBoundedField(bbox, coefficients)
116 apCorrMap[instFluxErrName] = ChebyshevBoundedField(bbox, coefficients_sigma)
117 self.ap_corr_task.run(sourceCat, apCorrMap)
118 self.assertTrue(sourceCat[flagKey])
120 def testCatFluxUnchanged(self):
121 # Pick arbitrary but unique values for the test case
122 source_test_instFlux = 5.3
123 source_test_centroid = lsst.geom.Point2D(5, 7.1)
124 sourceCat = initializeSourceCatalog(schema=self.schema, name=self.name, instFlux=source_test_instFlux,
125 sigma=0, centroid=source_test_centroid)
126 instFluxName = self.name + "_instFlux"
127 instFluxErrName = self.name + "_instFluxErr"
128 instFluxKey = self.schema.find(instFluxName).key
130 apCorrMap = afwImage.ApCorrMap()
131 bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.ExtentI(10, 10))
132 coefficients = np.ones((1, 1), dtype=np.float64)
133 coefficients_sigma = np.zeros((1, 1), dtype=np.float64)
134 apCorrMap[instFluxName] = ChebyshevBoundedField(bbox, coefficients)
135 apCorrMap[instFluxErrName] = ChebyshevBoundedField(bbox, coefficients_sigma)
136 self.ap_corr_task.run(sourceCat, apCorrMap)
138 self.assertEqual(sourceCat[instFluxKey], source_test_instFlux)
140 def testCatFluxHalf(self):
141 # Pick arbitrary but unique values for the test case
142 source_test_instFlux = 5.4
143 source_test_centroid = lsst.geom.Point2D(5, 7.1)
144 sourceCat = initializeSourceCatalog(schema=self.schema, name=self.name, instFlux=source_test_instFlux,
145 sigma=0, centroid=source_test_centroid)
146 instFluxName = self.name + "_instFlux"
147 instFluxErrName = self.name + "_instFluxErr"
148 instFluxKey = self.schema.find(instFluxName).key
150 apCorrMap = afwImage.ApCorrMap()
151 bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.ExtentI(10, 10))
152 coefficients = np.ones((1, 1), dtype=np.float64)
153 coefficients /= 2.
154 coefficients_sigma = np.zeros((1, 1), dtype=np.float64)
155 apCorrMap[instFluxName] = ChebyshevBoundedField(bbox, coefficients)
156 apCorrMap[instFluxErrName] = ChebyshevBoundedField(bbox, coefficients_sigma)
157 self.ap_corr_task.run(sourceCat, apCorrMap)
159 self.assertAlmostEqual(sourceCat[instFluxKey], source_test_instFlux / 2)
161 def testCatFluxErr(self):
162 """Test catalog flux errors.
164 Notes
165 -----
166 This test will break if ``UseNaiveFluxErr = False``~
168 The alternate method significantly overestimates noise, causing this
169 test to fail. It is likely that this test will need to be modified if
170 the noise calculation is updated.
171 """
172 # Pick arbitrary but unique values for the test case
173 source_test_instFlux = 5.5
174 source_test_sigma = 0.23
175 source_test_centroid = lsst.geom.Point2D(5, 7.3)
176 sourceCat = initializeSourceCatalog(schema=self.schema, name=self.name, instFlux=source_test_instFlux,
177 sigma=source_test_sigma, centroid=source_test_centroid)
179 instFluxName = self.name + "_instFlux"
180 instFluxErrName = self.name + "_instFluxErr"
181 instFluxErrKey = self.schema.find(instFluxErrName).key
183 apCorrMap = afwImage.ApCorrMap()
184 bbox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.ExtentI(10, 10))
185 coefficients = np.ones((1, 1), dtype=np.float64)
186 coefficients_sigma = np.ones((1, 1), dtype=np.float64)
187 apCorrMap[instFluxName] = ChebyshevBoundedField(bbox, coefficients)
188 apCorrMap[instFluxErrName] = ChebyshevBoundedField(bbox, coefficients_sigma)
189 self.ap_corr_task.run(sourceCat, apCorrMap)
191 self.assertAlmostEqual(sourceCat[instFluxErrKey], source_test_sigma)
194class TestMemory(lsst.utils.tests.MemoryTestCase):
195 pass
198def setup_module(module):
199 lsst.utils.tests.init()
202if __name__ == "__main__": 202 ↛ 203line 202 didn't jump to line 203, because the condition on line 202 was never true
203 lsst.utils.tests.init()
204 unittest.main()