Coverage for python/lsst/sims/catUtils/mixins/ObsMetaMixin.py : 32%

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1from builtins import object
2import numpy as np
4__all__ = ["ObsMetadataBase"]
6class ObsMetadataBase(object):
7 """
8 This class provides the InstanceCatalog with a way to write out parameters from its ObsMetadata object.
9 """
10 def _get_nobj(self):
11 return len(self.column_by_name('objId'))
13 def get_expMJD(self):
14 """
15 Returns the expMJD from obs_metadata (assumed to be TAI MJD exposure midpoint).
16 """
17 n_records = self._get_nobj()
18 mjd = [self.obs_metadata.mjd.TAI] * n_records
19 return np.array(mjd)
21 def get_rotSkyPos(self):
22 """
23 Returns the rotSkyPos from obs_metadata (in degrees).
24 """
25 n_records = self._get_nobj()
26 rotSkyPos = [self.obs_metadata.rotSkyPos] * n_records
27 return np.array(rotSkyPos)
29 def get_bandpass(self):
30 """
31 Returns the bandpass name from obs_metadata.
32 """
33 n_records = self._get_nobj()
34 bandpass = [self.obs_metadata.bandpass] * n_records
35 return np.array(bandpass)
37 def get_m5(self):
38 """
39 Returns m5 from obs_metadata.
40 """
41 n_records = self._get_nobj()
42 m5 = [self.obs_metadata.m5[self.obs_metadata.bandpass]] * n_records
43 return np.array(m5)
45 def get_seeing(self):
46 """
47 Returns the seeing from obs_metadata (in arcseconds).
48 """
49 n_records = self._get_nobj()
50 seeing = [self.obs_metadata.seeing[self.obs_metadata.bandpass]] * n_records
51 return np.array(seeing)
53 def get_fieldRA(self):
54 """
55 Returns the field RA from obs_metadata (in degrees).
56 """
57 n_records = self._get_nobj()
58 ra = [self.obs_metadata.unrefractedRA] * n_records
59 return np.array(ra)
61 def get_fieldDec(self):
62 """
63 Returns the field Dec from obs_metadata (in degrees).
64 """
65 n_records = self._get_nobj()
66 dec = [self.obs_metadata.unrefractedDec] * n_records
67 return np.array(dec)
69 def get_visitExpTime(self):
70 """
71 Returns the visitExpTime (open shutter time) in seconds.
72 """
73 n_records = self._get_nobj()
74 try:
75 visitExpTime = [self.obs_metadata.OpsimMetaData['visitExpTime']] * n_records
76 except KeyError:
77 # V4 future proofing.
78 visitExpTime = [self.obs_metadata.OpsimMetaData['visitExposureTime']] * n_records
79 return np.array(visitExpTime)