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# 

# LSST Data Management System 

# Copyright 2008-2017 AURA/LSST. 

# 

# This product includes software developed by the 

# LSST Project (http://www.lsst.org/). 

# 

# This program is free software: you can redistribute it and/or modify 

# it under the terms of the GNU General Public License as published by 

# the Free Software Foundation, either version 3 of the License, or 

# (at your option) any later version. 

# 

# This program is distributed in the hope that it will be useful, 

# but WITHOUT ANY WARRANTY; without even the implied warranty of 

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

# GNU General Public License for more details. 

# 

# You should have received a copy of the LSST License Statement and 

# the GNU General Public License along with this program. If not, 

# see <http://www.lsstcorp.org/LegalNotices/>. 

# 

 

import unittest 

 

import numpy as np 

 

import lsst.geom 

import lsst.afw.image as afwImage 

import lsst.afw.table as afwTable 

import lsst.meas.base 

import lsst.utils.tests 

import testLib 

 

try: 

type(verbose) 

except NameError: 

verbose = 0 

 

lsst.meas.base.wrapSimpleAlgorithm( 

testLib.SillyCentroidAlgorithm, 

# algorithm name is specified manually here because testLib isn't in a normal Python package; 

# normally this is unnecessary 

name="testLib_SillyCentroid", 

Control=testLib.SillyCentroidControl, 

executionOrder=lsst.meas.base.BasePlugin.CENTROID_ORDER, 

) 

 

 

class CentroidTestCase(lsst.utils.tests.TestCase): 

"""A test case for centroiding.""" 

 

def setUp(self): 

pass 

 

def tearDown(self): 

pass 

 

def testApplyCentroid(self): 

"""Test that we can instantiate and play with SillyMeasureCentroid""" 

 

for imageFactory in ( 

afwImage.MaskedImageF, 

): 

im = imageFactory(lsst.geom.ExtentI(100, 100)) 

exp = afwImage.makeExposure(im) 

for offset in (0, 1, 2): 

control = testLib.SillyCentroidControl() 

control.param = offset 

x, y = 10, 20 

schema = afwTable.SourceTable.makeMinimalSchema() 

schema.addField("centroid_x", type=np.float64) 

schema.addField("centroid_y", type=np.float64) 

schema.getAliasMap().set("slot_Centroid", "centroid") 

plugin = testLib.SillyCentroidAlgorithm(control, "test", schema) 

measCat = afwTable.SourceCatalog(schema) 

source = measCat.makeRecord() 

source.set("centroid_x", x) 

source.set("centroid_y", y) 

plugin.measure(source, exp) 

self.assertEqual(x, source.get("test_x") - offset) 

self.assertEqual(y, source.get("test_y") - offset) 

 

def testMeasureCentroid(self): 

"""Test that we can use our silly centroid through the usual Tasks.""" 

testLib.SillyCentroidControl() 

x, y = 10, 20 

 

im = afwImage.MaskedImageF(lsst.geom.ExtentI(512, 512)) 

im.set(0) 

arr = im.getImage().getArray() 

arr[y, x] = 1000 

exp = afwImage.makeExposure(im) 

 

schema = afwTable.SourceTable.makeMinimalSchema() 

schema.addField("flags_negative", type="Flag", 

doc="set if source was detected as significantly negative") 

sfm_config = lsst.meas.base.sfm.SingleFrameMeasurementConfig() 

sfm_config.plugins = ["testLib_SillyCentroid"] 

sfm_config.plugins["testLib_SillyCentroid"].param = 5 

sfm_config.slots.centroid = "testLib_SillyCentroid" 

sfm_config.slots.shape = None 

sfm_config.slots.psfShape = None 

sfm_config.slots.psfFlux = None 

sfm_config.slots.gaussianFlux = None 

sfm_config.slots.calibFlux = None 

sfm_config.slots.apFlux = None 

sfm_config.slots.modelFlux = None 

sfm_config.doReplaceWithNoise = False 

task = lsst.meas.base.SingleFrameMeasurementTask(schema, config=sfm_config) 

measCat = afwTable.SourceCatalog(schema) 

measCat.defineCentroid("testLib_SillyCentroid") 

source = measCat.addNew() 

source.set("testLib_SillyCentroid_x", x) 

source.set("testLib_SillyCentroid_y", y) 

source.set("parent", 0) 

source.set("flags_negative", False) 

 

# now run the SFM task with the test plugin 

task.run(measCat, exp) 

self.assertEqual(len(measCat), 1) 

self.assertEqual(measCat[0].getY(), y + 5) 

self.assertEqual(measCat[0].getX(), x + 5) 

 

 

class TestMemory(lsst.utils.tests.MemoryTestCase): 

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

133 ↛ 134line 133 didn't jump to line 134, because the condition on line 133 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()