class Version0HscRingsTestCase(HscRingsTestCase):
"""Testing that the version=0 RingsSkyMap works in the expected way"""
def setUp(self):
self.skymap = RingsSkyMap(self.getConfig(), version=0)
def testDm14809(self):
"""Test that DM-14809 has been partially fixed
The observed behaviour was:
skyMap.findTract(skyMap[9712].getCtrCoord()).getId() != 9712
and
skyMap[1].getCtrCoord() == skyMap[11].getCtrCoord()
Specifically for version=0, we fixed the ``findTract`` behaviour but
left the tract duplication (tract 11 duplicates tract 1) and the
missing tract (the first tract in the last ring) so that the tract
numbering would remain unchanged.
"""
# Check that the tract found for central coordinate of a tract is that tract
expect = [tract.getId() for tract in self.skymap]
expect[self.skymap._ringNums[0] + 1] = 1 # Due to the bug
got = [
self.skymap.findTract(tract.getCtrCoord()).getId()
for tract in self.skymap
]
self.assertEqual(got, expect)
# Check that the tract central coordinates are unique
# Round to integer arcminutes so differences are relatively immune to small numerical inaccuracies
centers = set([(int(coord.getRa().asArcminutes()),
int(coord.getDec().asArcminutes()))
for coord in (tract.getCtrCoord()
for tract in self.skymap)])
self.assertEqual(len(centers),
len(self.skymap) - 1) # One tract is duplicated
self.assertEqual(self.skymap[1].getCtrCoord(),
self.skymap[self.skymap._ringNums[0] +
1].getCtrCoord()) # This is the duplicate
# Check that some particular tracts we know and love haven't moved
degrees = lsst.geom.degrees
# 9712 is at RA=0, and was identified as problematic in DM-14809
self.assertEqual(
self.skymap[9712].getCtrCoord(),
lsst.geom.SpherePoint(0.0 * degrees, 0.7438016528925696 * degrees))
# The Cosmos field
self.assertEqual(
self.skymap[9813].getCtrCoord(),
lsst.geom.SpherePoint(150.2479338842975 * degrees,
2.2314049586776834 * degrees))
# Check that the first tract in the last ring does NOT exist (due to the bug)
coord = self.getFirstTractLastRingCoord()
tract = self.skymap.findTract(coord)
self.assertFalse(tract.contains(coord))
class Version0HscRingsTestCase(HscRingsTestCase):
"""Testing that the version=0 RingsSkyMap works in the expected way"""
def setUp(self):
self.skymap = RingsSkyMap(self.getConfig(), version=0)
def testDm14809(self):
"""Test that DM-14809 has been partially fixed
The observed behaviour was:
skyMap.findTract(skyMap[9712].getCtrCoord()).getId() != 9712
and
skyMap[1].getCtrCoord() == skyMap[11].getCtrCoord()
Specifically for version=0, we fixed the ``findTract`` behaviour but
left the tract duplication (tract 11 duplicates tract 1) and the
missing tract (the first tract in the last ring) so that the tract
numbering would remain unchanged.
"""
# Check that the tract found for central coordinate of a tract is that tract
expect = [tract.getId() for tract in self.skymap]
expect[self.skymap._ringNums[0] + 1] = 1 # Due to the bug
got = [self.skymap.findTract(tract.getCtrCoord()).getId() for tract in self.skymap]
self.assertEqual(got, expect)
# Check that the tract central coordinates are unique
# Round to integer arcminutes so differences are relatively immune to small numerical inaccuracies
centers = set([(int(coord.getRa().asArcminutes()), int(coord.getDec().asArcminutes())) for
coord in (tract.getCtrCoord() for tract in self.skymap)])
self.assertEqual(len(centers), len(self.skymap) - 1) # One tract is duplicated
self.assertEqual(self.skymap[1].getCtrCoord(),
self.skymap[self.skymap._ringNums[0] + 1].getCtrCoord()) # This is the duplicate
# Check that some particular tracts we know and love haven't moved
degrees = lsst.geom.degrees
# 9712 is at RA=0, and was identified as problematic in DM-14809
self.assertEqual(self.skymap[9712].getCtrCoord(),
lsst.geom.SpherePoint(0.0*degrees, 0.7438016528925696*degrees))
# The Cosmos field
self.assertEqual(self.skymap[9813].getCtrCoord(),
lsst.geom.SpherePoint(150.2479338842975*degrees, 2.2314049586776834*degrees))
# Check that the first tract in the last ring does NOT exist (due to the bug)
coord = self.getFirstTractLastRingCoord()
tract = self.skymap.findTract(coord)
self.assertFalse(tract.contains(coord))
class HscRingsTestCase(lsst.utils.tests.TestCase):
def getConfig(self):
"""Return a configuration matching that used for the HSC SSP"""
config = RingsSkyMap.ConfigClass()
config.numRings = 120
config.projection = "TAN"
config.tractOverlap = 1.0/60 # Overlap between tracts (degrees)
config.pixelScale = 0.168
return config
def setUp(self):
self.skymap = RingsSkyMap(self.getConfig())
def tearDown(self):
del self.skymap
def testDm7770(self):
"""Test that DM-7770 has been fixed
These operations previously caused:
lsst::pex::exceptions::RuntimeError: 'Error: wcslib
returned a status code of 9 at sky 30.18, -3.8 deg:
One or more of the world coordinates were invalid'
We are only testing function, and not the actual results.
"""
coordList = [lsst.afw.geom.SpherePoint(ra, dec, lsst.afw.geom.degrees) for
ra, dec in [(30.18, -3.8), (31.3, -3.8), (31.3, -2.7), (30.18, -2.7)]]
for coord in coordList:
self.skymap.findAllTracts(coord)
self.skymap.findTractPatchList(coordList)
def testDm14809(self):
"""Test that DM-14809 has been fixed"""
skyMapTestCase.checkDm14809(self, self.skymap)
# Check that the first tract in the last ring exists
coord = self.getFirstTractLastRingCoord()
tract = self.skymap.findTract(coord)
self.assertTrue(tract.contains(coord))
def testWraparound(self):
"""Check wrapping at RA=0
How-to-reproduce of a bug identified by Sogo Mineo.
"""
tractId = 9712
deviation = 10 / 3600.0 # 10 arcsec
tract = self.skymap[tractId]
center = tract.getCtrCoord()
centerRa = center.getRa().asDegrees()
centerDec = center.getDec().asDegrees()
for devRa in [-deviation, deviation]:
coord = lsst.afw.geom.SpherePoint(centerRa + devRa, centerDec, lsst.afw.geom.degrees)
foundTractId = self.skymap.findTract(coord).getId()
self.assertEqual(tractId, foundTractId)
def getFirstTractLastRingCoord(self):
"""Return the coordinates of the first tract in the last ring
This tract is missing in version=0, but this is fixed in version=1.in
"""
ringNum = self.skymap.config.numRings - 1
ringSize = math.pi/(self.skymap.config.numRings + 1)
firstRingStart = ringSize*0.5 - 0.5*math.pi
dec = ringNum*ringSize + firstRingStart
return lsst.afw.geom.SpherePoint(self.skymap.config.raStart*lsst.afw.geom.degrees,
dec*lsst.afw.geom.radians)
class HscRingsTestCase(lsst.utils.tests.TestCase):
def getConfig(self):
"""Return a configuration matching that used for the HSC SSP"""
config = RingsSkyMap.ConfigClass()
config.numRings = 120
config.projection = "TAN"
config.tractOverlap = 1.0/60 # Overlap between tracts (degrees)
config.pixelScale = 0.168
return config
def setUp(self):
self.skymap = RingsSkyMap(self.getConfig())
def tearDown(self):
del self.skymap
def testDm7770(self):
"""Test that DM-7770 has been fixed
These operations previously caused:
lsst::pex::exceptions::RuntimeError: 'Error: wcslib
returned a status code of 9 at sky 30.18, -3.8 deg:
One or more of the world coordinates were invalid'
We are only testing function, and not the actual results.
"""
coordList = [lsst.geom.SpherePoint(ra, dec, lsst.geom.degrees) for
ra, dec in [(30.18, -3.8), (31.3, -3.8), (31.3, -2.7), (30.18, -2.7)]]
for coord in coordList:
self.skymap.findAllTracts(coord)
self.skymap.findTractPatchList(coordList)
def testDm14809(self):
"""Test that DM-14809 has been fixed"""
skyMapTestCase.checkDm14809(self, self.skymap)
# Check that the first tract in the last ring exists
coord = self.getFirstTractLastRingCoord()
tract = self.skymap.findTract(coord)
self.assertTrue(tract.contains(coord))
def testWraparound(self):
"""Check wrapping at RA=0
How-to-reproduce of a bug identified by Sogo Mineo.
"""
tractId = 9712
deviation = 10 / 3600.0 # 10 arcsec
tract = self.skymap[tractId]
center = tract.getCtrCoord()
centerRa = center.getRa().asDegrees()
centerDec = center.getDec().asDegrees()
for devRa in [-deviation, deviation]:
coord = lsst.geom.SpherePoint(centerRa + devRa, centerDec, lsst.geom.degrees)
foundTractId = self.skymap.findTract(coord).getId()
self.assertEqual(tractId, foundTractId)
def getFirstTractLastRingCoord(self):
"""Return the coordinates of the first tract in the last ring
This tract is missing in version=0, but this is fixed in version=1.in
"""
ringNum = self.skymap.config.numRings - 1
ringSize = math.pi/(self.skymap.config.numRings + 1)
firstRingStart = ringSize*0.5 - 0.5*math.pi
dec = ringNum*ringSize + firstRingStart
return lsst.geom.SpherePoint(self.skymap.config.raStart*lsst.geom.degrees,
dec*lsst.geom.radians)