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# 

# LSST Data Management System 

# 

# Copyright 2008-2016 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 <https://www.lsstcorp.org/LegalNotices/>. 

# 

 

import unittest 

 

import lsst.geom 

import lsst.afw.table as afwTable 

import lsst.daf.base as dafBase 

from lsst.meas.algorithms import SourceDetectionTask 

from lsst.meas.base import SingleFrameMeasurementTask as SourceMeasurementTask 

from lsst.meas.algorithms.testUtils import plantSources 

import lsst.utils.tests 

 

try: 

type(display) 

import lsst.afw.display.ds9 as ds9 

except NameError: 

display = False 

 

 

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

"""A test case for negative objects.""" 

 

def testBasics(self): 

bbox = lsst.geom.Box2I(lsst.geom.Point2I(256, 100), lsst.geom.Extent2I(128, 127)) 

minCounts = 2000 

maxCounts = 20000 

starSigma = 1.5 

numX = 4 

numY = 4 

coordList = self.makeCoordList( 

bbox=bbox, 

numX=numX, 

numY=numY, 

minCounts=minCounts, 

maxCounts=maxCounts, 

sigma=starSigma, 

) 

kwid = 11 

sky = 2000 

addPoissonNoise = True 

exposure = plantSources(bbox=bbox, kwid=kwid, sky=sky, coordList=coordList, 

addPoissonNoise=addPoissonNoise) 

 

if display: 

ds9.mtv(exposure) 

 

schema = afwTable.SourceTable.makeMinimalSchema() 

config = SourceDetectionTask.ConfigClass() 

config.reEstimateBackground = False 

config.thresholdPolarity = 'both' 

detection = SourceDetectionTask(config=config, schema=schema) 

algMetadata = dafBase.PropertyList() 

measurement = SourceMeasurementTask(schema=schema, algMetadata=algMetadata) 

 

table = afwTable.SourceTable.make(schema) 

detections = detection.makeSourceCatalog(table, exposure) 

sources = detections.sources 

fpSets = detections.fpSets 

 

self.assertEqual(len(sources), numX * numY) 

self.assertEqual(fpSets.numPos, numX * numY / 2) 

self.assertEqual(fpSets.numNeg, numX * numY / 2) 

 

measurement.run(sources, exposure) 

 

nGoodCent = 0 

nGoodShape = 0 

for s in sources: 

cent = s.getCentroid() 

shape = s.getShape() 

 

if cent[0] == cent[0] and cent[1] == cent[1]: 

nGoodCent += 1 

 

if (shape.getIxx() == shape.getIxx() and 

shape.getIyy() == shape.getIyy() and 

shape.getIxy() == shape.getIxy()): 

nGoodShape += 1 

 

if display: 

xy = cent[0] - exposure.getX0(), cent[1] - exposure.getY0() 

ds9.dot('+', *xy) 

ds9.dot(shape, *xy, ctype=ds9.RED) 

 

self.assertEqual(nGoodCent, numX * numY) 

self.assertEqual(nGoodShape, numX * numY) 

 

def makeCoordList(self, bbox, numX, numY, minCounts, maxCounts, sigma): 

"""Make a coordList for makeExposure.""" 

dX = bbox.getWidth() / float(numX) 

dY = bbox.getHeight() / float(numY) 

minX = bbox.getMinX() + (dX / 2.0) 

minY = bbox.getMinY() + (dY / 2.0) 

dCounts = (maxCounts - minCounts) / (numX * numY / 2 - 1) 

 

coordList = [] 

counts = minCounts 

for i in range(numX): 

x = minX + (dX * i) 

for j in range(numY): 

y = minY + (dY * j) 

if j % 2 == 0: 

coordList.append([x, y, counts, sigma]) 

else: 

coordList.append([x, y, -counts, sigma]) 

counts += dCounts 

return coordList 

 

 

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

pass 

 

 

def setup_module(module): 

lsst.utils.tests.init() 

 

 

139 ↛ 140line 139 didn't jump to line 140, because the condition on line 139 was never trueif __name__ == "__main__": 

lsst.utils.tests.init() 

unittest.main()