#
# 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 os
import numpy as np
import unittest
import lsst.geom
import lsst.afw.geom as afwGeom
import lsst.afw.math as afwMath
import lsst.afw.table as afwTable
import lsst.afw.image as afwImage
import lsst.meas.algorithms as measAlg
import lsst.utils.tests
try:
type(verbose)
except NameError:
verbose = 0
display = False
class CoaddApCorrMapTest(lsst.utils.tests.TestCase):
def testCoaddApCorrMap(self):
"""Check that we can create and use a coadd ApCorrMap."""
coaddBox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.Extent2I(100, 100))
scale = 5.0e-5*lsst.geom.degrees
cdMatrix = afwGeom.makeCdMatrix(scale=scale)
crval = lsst.geom.SpherePoint(0.0, 0.0, lsst.geom.degrees)
center = lsst.geom.Point2D(lsst.geom.Extent2D(coaddBox.getDimensions())*0.5)
coaddWcs = afwGeom.makeSkyWcs(crpix=lsst.geom.Point2D(0, 0), crval=crval, cdMatrix=cdMatrix)
schema = afwTable.ExposureTable.makeMinimalSchema()
weightKey = schema.addField("customweightname", type="D", doc="Coadd weight")
catalog = afwTable.ExposureCatalog(schema)
# Non-overlapping
num = 5
inputBox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.Extent2I(10, 10))
validBox = lsst.geom.Box2I(lsst.geom.Point2I(0, 0), lsst.geom.Extent2I(7, 7))
pointList = []
pointListValid = []
for i in range(num):
value = np.array([[1]], dtype=float) # Constant with value = i+1
apCorrMap = afwImage.ApCorrMap()
bf = afwMath.ChebyshevBoundedField(inputBox, value*(i + 1))
apCorrMap.set("only", bf)
point = lsst.geom.Point2D(0, 0) - lsst.geom.Extent2D(coaddBox.getDimensions())*(i+0.5)/num
wcs = afwGeom.makeSkyWcs(crpix=point, crval=crval, cdMatrix=cdMatrix)
center = lsst.geom.Box2D(inputBox).getCenter()
pointList.append(coaddWcs.skyToPixel(wcs.pixelToSky(center)))
# This point will only be valid for the second overlapping record
pointValid = center + lsst.geom.Extent2D(4, 4)
pointListValid.append(coaddWcs.skyToPixel(wcs.pixelToSky(pointValid)))
# A record with the valid polygon defining a limited region
record = catalog.getTable().makeRecord()
record.setWcs(wcs)
record.setBBox(inputBox)
record.setApCorrMap(apCorrMap)
record.set(weightKey, i + 1)
record['id'] = i
record.setValidPolygon(afwGeom.Polygon(lsst.geom.Box2D(validBox)))
catalog.append(record)
# An overlapping record with the whole region as valid
record = catalog.getTable().makeRecord()
record.setWcs(wcs)
record.setBBox(inputBox)
apCorrMap = afwImage.ApCorrMap()
bf = afwMath.ChebyshevBoundedField(inputBox, value*(i + 2))
apCorrMap.set("only", bf)
record.setApCorrMap(apCorrMap)
record.set(weightKey, i + 2)
record['id'] = i + num
record.setValidPolygon(afwGeom.Polygon(lsst.geom.Box2D(inputBox)))
catalog.append(record)
apCorrMap = measAlg.makeCoaddApCorrMap(catalog, coaddBox, coaddWcs, "customweightname")
# This will test a point where both records contribute
self.assertApCorrMap(apCorrMap, pointList)
# Only the second record will be valid for this point
self.assertApCorrMapValid(apCorrMap, pointListValid)
filename = os.path.join(os.path.dirname(os.path.realpath(__file__)), "coaddApCorrMap.fits")
exposure = afwImage.ExposureF(1, 1)
exposure.getInfo().setApCorrMap(apCorrMap)
exposure.writeFits(filename)
exposure = afwImage.ExposureF(filename)
self.assertApCorrMap(exposure.getInfo().getApCorrMap(), pointList)
self.assertApCorrMapValid(exposure.getInfo().getApCorrMap(), pointListValid)
os.unlink(filename)
def assertApCorrMap(self, apCorrMap, pointList):
for i, point in enumerate(pointList):
weights = [i + 1, i + 2]
values = [i + 1, i + 2]
expected = sum((w*v for w, v in zip(weights, values)), 0.0)/sum(weights)
actual = apCorrMap["only"].evaluate(point)
self.assertEqual(actual, expected)
def assertApCorrMapValid(self, apCorrMap, pointList):
for i, point in enumerate(pointList):
weights = [i + 2]
values = [i + 2]
expected = sum((w*v for w, v in zip(weights, values)), 0.0)/sum(weights)
actual = apCorrMap["only"].evaluate(point)
self.assertEqual(actual, expected)
class TestMemory(lsst.utils.tests.MemoryTestCase):
pass
def setup_module(module):
lsst.utils.tests.init()
141 ↛ 142line 141 didn't jump to line 142, because the condition on line 141 was never trueif __name__ == "__main__":
lsst.utils.tests.init()
unittest.main()
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