def testCtorFromMetadata(self):
"""Test building a Calib from metadata"""
isoDate = "1995-01-26T07:32:00.000000000Z"
exptime = 123.4
flux0, flux0Err = 1e12, 1e10
flux, fluxErr = 1000.0, 10.0
metadata = dafBase.PropertySet()
metadata.add("TIME-MID", isoDate)
metadata.add("EXPTIME", exptime)
metadata.add("FLUXMAG0", flux0)
metadata.add("FLUXMAG0ERR", flux0Err)
self.calib = afwImage.Calib(metadata)
self.assertEqual(isoDate, self.calib.getMidTime().toString())
self.assertAlmostEqual(self.calib.getMidTime().get(), 49743.3142245)
self.assertEqual(self.calib.getExptime(), exptime)
self.assertEqual(flux0, self.calib.getFluxMag0()[0])
self.assertEqual(flux0Err, self.calib.getFluxMag0()[1])
self.assertEqual(22.5, self.calib.getMagnitude(flux))
# Error just in flux
self.calib.setFluxMag0(flux0, 0)
self.assertAlmostEqual(
self.calib.getMagnitude(flux, fluxErr)[1],
2.5 / math.log(10) * fluxErr / flux)
#
# Check that we can clean up metadata
#
afwImage.stripCalibKeywords(metadata)
self.assertEqual(len(metadata.names()), 0)
def testCtorFromMetadata(self):
"""Test building a Calib from metadata"""
isoDate = "1995-01-26T07:32:00.000000000Z"
exptime = 123.4
flux0, flux0Err = 1e12, 1e10
flux, fluxErr = 1000.0, 10.0
metadata = dafBase.PropertySet()
metadata.add("TIME-MID", isoDate)
metadata.add("EXPTIME", exptime)
metadata.add("FLUXMAG0", flux0)
metadata.add("FLUXMAG0ERR", flux0Err)
self.calib = afwImage.Calib(metadata)
self.assertEqual(isoDate, self.calib.getMidTime().toString())
self.assertAlmostEqual(self.calib.getMidTime().get(), 49743.3142245)
self.assertEqual(self.calib.getExptime(), exptime)
self.assertEqual(flux0, self.calib.getFluxMag0()[0])
self.assertEqual(flux0Err, self.calib.getFluxMag0()[1])
self.assertEqual(22.5, self.calib.getMagnitude(flux))
# Error just in flux
self.calib.setFluxMag0(flux0, 0)
self.assertAlmostEqual(self.calib.getMagnitude(flux, fluxErr)[1], 2.5/math.log(10)*fluxErr/flux)
#
# Check that we can clean up metadata
#
afwImage.stripCalibKeywords(metadata)
self.assertEqual(len(metadata.names()), 0)
def testCtorFromMetadata(self):
"""Test building a Calib from metadata"""
flux0, flux0Err = 1e12, 1e10
flux, fluxErr = 1000.0, 10.0
metadata = dafBase.PropertySet()
metadata.add("FLUXMAG0", flux0)
metadata.add("FLUXMAG0ERR", flux0Err)
self.calib = afwImage.Calib(metadata)
self.assertEqual(flux0, self.calib.getFluxMag0()[0])
self.assertEqual(flux0Err, self.calib.getFluxMag0()[1])
self.assertEqual(22.5, self.calib.getMagnitude(flux))
# Error just in flux
self.calib.setFluxMag0(flux0, 0)
self.assertAlmostEqual(
self.calib.getMagnitude(flux, fluxErr)[1],
2.5 / math.log(10) * fluxErr / flux)
# Check that we can clean up metadata
afwImage.stripCalibKeywords(metadata)
self.assertEqual(len(metadata.names()), 0)