Coverage for tests/test_ShapeUtilities.py : 41%

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# This file is part of meas_base. # # Developed for the LSST Data Management System. # This product includes software developed by the LSST Project # (https://www.lsst.org). # See the COPYRIGHT file at the top-level directory of this distribution # for details of code ownership. # # 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 GNU General Public License # along with this program. If not, see <https://www.gnu.org/licenses/>.
# A no-op coordinate transform translates to a no-op shape transform a = lsst.geom.AffineTransform() np.testing.assert_array_equal(a.getMatrix(), np.identity(3)) m = lsst.meas.base.makeShapeTransformMatrix(a.getLinear()) np.testing.assert_array_equal(m, np.identity(3))
# Transforming an ellipse by multiplying by the matrix should be # equivalent to calling its transform() method. lt = lsst.geom.LinearTransform.makeRotation(lsst.geom.Angle(np.random.random())) e = lsst.afw.geom.Quadrupole(np.random.random(), np.random.random(), np.random.random()) np.testing.assert_array_almost_equal(np.dot(lsst.meas.base.makeShapeTransformMatrix(lt), e.getParameterVector()), e.transform(lt).getParameterVector())
# Test that the analytically-derived correct values are computed lt = lsst.geom.LinearTransform(np.random.random((2, 2))) m = lsst.meas.base.makeShapeTransformMatrix(lt)
self.assertEqual(m[0, 0], lt[0, 0]*lt[0, 0]) self.assertEqual(m[0, 1], lt[0, 1]*lt[0, 1]) self.assertEqual(m[0, 2], 2*lt[0, 0]*lt[0, 1])
self.assertEqual(m[1, 0], lt[1, 0]*lt[1, 0]) self.assertEqual(m[1, 1], lt[1, 1]*lt[1, 1]) self.assertEqual(m[1, 2], 2*lt[1, 0]*lt[1, 1])
self.assertEqual(m[2, 0], lt[0, 0]*lt[1, 0]) self.assertEqual(m[2, 1], lt[0, 1]*lt[1, 1]) self.assertEqual(m[2, 2], lt[0, 0]*lt[1, 1] + lt[0, 1]*lt[1, 0])
lsst.utils.tests.init()
lsst.utils.tests.init() unittest.main() |