#
# LSST Data Management System
# Copyright 2012-2017 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/>.
#
import unittest
import numpy as np
from numpy.testing import assert_allclose
import lsst.utils
from lsst.validate.drp.calcsrd.amx import matchVisitComputeDistance
def test_basic_matchVisitComputeDistance():
visit_obj1 = [1, 2, 3, 4]
visit_obj2 = [1, 2, 3, 4]
ra_obj1 = np.deg2rad(np.array([10.0010, 10.0005, 10.0000, 10.0005]))
ra_obj2 = np.deg2rad(np.array([10.0008, 10.0003, 10.0005, 10.0006]))
dec_obj1 = np.deg2rad(np.array([20.001, 20.006, 20.002, 20.004]))
dec_obj2 = np.deg2rad(np.array([20.010, 20.030, 20.004, 20.003]))
exp = [0.0001571138, 0.000418891, 3.58568e-05, 1.75301e-05]
obs = matchVisitComputeDistance(visit_obj1, ra_obj1, dec_obj1,
visit_obj2, ra_obj2, dec_obj2)
# matchVisitComputeDistance doesn't preserve order
# Sort to compare
exp = np.sort(exp)
obs = np.sort(obs)
assert_allclose(exp, obs, atol=1e-7) # 1e-7 rad == 5.73e-6 deg == 0.00036 arcsec
def test_missing_matchVisitComputeDistance():
visit_obj1 = [1, 2, 3, 4]
visit_obj2 = [4, 1]
ra_obj1 = np.deg2rad(np.array([10.0010, 10.0005, 10.0000, 10.0005]))
ra_obj2 = np.deg2rad(np.array([10.0006, 10.0008]))
dec_obj1 = np.deg2rad(np.array([20.001, 20.006, 20.002, 20.004]))
dec_obj2 = np.deg2rad(np.array([20.003, 20.010]))
exp = [1.75301e-05, 0.0001571138]
obs = matchVisitComputeDistance(visit_obj1, ra_obj1, dec_obj1,
visit_obj2, ra_obj2, dec_obj2)
# matchVisitComputeDistance doesn't preserve order
# Sort to compare
exp = np.sort(exp)
obs = np.sort(obs)
assert_allclose(exp, obs, atol=1e-7) # 1e-7 rad == 5.73e-6 deg == 0.00036 arcsec
def test_speed_matchVisitComputeDistance(n=5000):
# Explicitly convert n to int to ensure consistent behavior in indexing and numpy
n = int(n)
visits = np.arange(2*n)
np.random.shuffle(visits)
visit_obj1 = visits[:n]
np.random.shuffle(visits)
visit_obj2 = visits[:n]
mu, sigma = 0, 3e-4 # mean 0, ~1 arcsec width
mean_ra = 10 # degrees
mean_dec = 20 # degrees
ra_obj1 = mean_ra + np.random.normal(mu, sigma, n) * np.cos(np.deg2rad(mean_dec))
ra_obj2 = mean_ra + np.random.normal(mu, sigma, n) * np.cos(np.deg2rad(mean_dec))
dec_obj1 = mean_dec + np.random.normal(mu, sigma, n)
dec_obj2 = mean_dec + np.random.normal(mu, sigma, n)
matchVisitComputeDistance(visit_obj1, ra_obj1, dec_obj1,
visit_obj2, ra_obj2, dec_obj2)
95 ↛ 96line 95 didn't jump to line 96, because the condition on line 95 was never trueif __name__ == "__main__":
lsst.utils.tests.init()
unittest.main()
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