Coverage for tests/test_scaleZeroPoint.py : 25%

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# # LSST Data Management System # Copyright 2008, 2009, 2010 LSST Corporation. # # 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/>. #
"""A test case for ScaleZeroPointTask """
for outZeroPoint in (23, 24): config = ScaleZeroPointTask.ConfigClass() config.zeroPoint = outZeroPoint zpScaler = ScaleZeroPointTask(config=config) outPhotoCalib = zpScaler.getPhotoCalib()
self.assertAlmostEqual(outPhotoCalib.instFluxToMagnitude(1.0), outZeroPoint)
for inZeroPoint in (24, 25.5): exposure = afwImage.ExposureF(10, 10) mi = exposure.getMaskedImage() mi.set(1.0) var = mi.getVariance() var.set(1.0)
inPhotoCalib = self.makePhotoCalib(inZeroPoint) exposure.setPhotoCalib(inPhotoCalib) imageScaler = zpScaler.computeImageScaler(exposure)
predScale = 1.0 / inPhotoCalib.magnitudeToInstFlux(outZeroPoint) self.assertAlmostEqual(predScale, imageScaler._scale)
inFluxAtOutZeroPoint = exposure.getPhotoCalib().magnitudeToInstFlux(outZeroPoint) outFluxAtOutZeroPoint = outPhotoCalib.magnitudeToInstFlux(outZeroPoint) self.assertAlmostEqual(outFluxAtOutZeroPoint / imageScaler._scale, inFluxAtOutZeroPoint)
inFluxMag0 = exposure.getPhotoCalib().getInstFluxAtZeroMagnitude() outFluxMag0 = outPhotoCalib.getInstFluxAtZeroMagnitude() self.assertFloatsAlmostEqual(outFluxMag0 / imageScaler._scale, inFluxMag0, rtol=5e-15)
imageScaler.scaleMaskedImage(mi) self.assertAlmostEqual(mi.image[1, 1, afwImage.LOCAL], predScale) self.assertAlmostEqual(mi.variance[1, 1, afwImage.LOCAL], predScale**2)
fluxMag0 = 10**(0.4 * zeroPoint) return afwImage.makePhotoCalibFromCalibZeroPoint(fluxMag0, 1.0)
lsst.utils.tests.init()
lsst.utils.tests.init() unittest.main() |