Hide keyboard shortcuts

Hot-keys on this page

r m x p   toggle line displays

j k   next/prev highlighted chunk

0   (zero) top of page

1   (one) first highlighted chunk

1# This file is part of meas_algorithms. 

2# 

3# Developed for the LSST Data Management System. 

4# This product includes software developed by the LSST Project 

5# (https://www.lsst.org). 

6# See the COPYRIGHT file at the top-level directory of this distribution 

7# for details of code ownership. 

8# 

9# This program is free software: you can redistribute it and/or modify 

10# it under the terms of the GNU General Public License as published by 

11# the Free Software Foundation, either version 3 of the License, or 

12# (at your option) any later version. 

13# 

14# This program is distributed in the hope that it will be useful, 

15# but WITHOUT ANY WARRANTY; without even the implied warranty of 

16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 

17# GNU General Public License for more details. 

18# 

19# You should have received a copy of the GNU General Public License 

20# along with this program. If not, see <https://www.gnu.org/licenses/>. 

21 

22import unittest 

23import numpy as np 

24import tempfile 

25 

26from lsst.meas.algorithms import stamps 

27from lsst.afw import image as afwImage 

28from lsst.daf.base import PropertyList 

29import lsst.geom as geom 

30import lsst.utils.tests 

31 

32np.random.seed(90210) 

33 

34 

35def make_stamps(): 

36 stampSize = 25 

37 # create dummy stamp stamps 

38 stampImages = [afwImage.maskedImage.MaskedImageF(stampSize, stampSize) 

39 for _ in range(3)] 

40 for stampIm in stampImages: 

41 stampImArray = stampIm.image.array 

42 stampImArray += np.random.rand(stampSize, stampSize) 

43 ras = np.random.rand(3)*360. 

44 decs = np.random.rand(3)*180 - 90 

45 stamp_list = [stamps.Stamp(stamp_im=stampIm, 

46 position=geom.SpherePoint(geom.Angle(ra, geom.degrees), 

47 geom.Angle(dec, geom.degrees))) 

48 for stampIm, ra, dec in zip(stampImages, ras, decs)] 

49 metadata = PropertyList() 

50 metadata['RA_DEG'] = ras 

51 metadata['DEC_DEG'] = decs 

52 

53 return stamps.Stamps(stamp_list, metadata=metadata) 

54 

55 

56class StampsTestCase(lsst.utils.tests.TestCase): 

57 """Test Stamps. 

58 """ 

59 def testAppend(self): 

60 """Test ability to append to a Stamps object 

61 """ 

62 ss = make_stamps() 

63 s = ss[-1] 

64 ss.append(s) 

65 self.roundtrip(ss) 

66 # check if appending something other than a Stamp raises 

67 with self.assertRaises(ValueError): 

68 ss.append('hello world') 

69 

70 def testExtend(self): 

71 ss = make_stamps() 

72 ss2 = make_stamps() 

73 ss.extend([s for s in ss2]) 

74 # check if extending with something other than a Stamps 

75 # object raises 

76 with self.assertRaises(ValueError): 

77 ss.extend(['hello', 'world']) 

78 

79 def testIO(self): 

80 """Test the class' write and readFits methods. 

81 """ 

82 self.roundtrip(make_stamps()) 

83 

84 def roundtrip(self, ss): 

85 """Round trip a Stamps object to disk and check values 

86 """ 

87 with tempfile.NamedTemporaryFile() as f: 

88 ss.writeFits(f.name) 

89 options = PropertyList() 

90 ss2 = stamps.Stamps.readFitsWithOptions(f.name, options) 

91 self.assertEqual(len(ss), len(ss2)) 

92 for s1, s2 in zip(ss, ss2): 

93 self.assertMaskedImagesAlmostEqual(s1.stamp_im, s2.stamp_im) 

94 self.assertAlmostEqual(s1.position.getRa().asDegrees(), 

95 s2.position.getRa().asDegrees()) 

96 self.assertAlmostEqual(s1.position.getDec().asDegrees(), 

97 s2.position.getDec().asDegrees()) 

98 

99 

100class MemoryTester(lsst.utils.tests.MemoryTestCase): 

101 pass 

102 

103 

104def setup_module(module): 

105 lsst.utils.tests.init() 

106 

107 

108if __name__ == "__main__": 108 ↛ 109line 108 didn't jump to line 109, because the condition on line 108 was never true

109 lsst.utils.tests.init() 

110 unittest.main()