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LSST Data Management Base Package
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Classes | Functions | Variables
lsst.meas.astrom.matcher_probabilistic Namespace Reference

Classes

class  CatalogExtras
 
class  ComparableCatalog
 
class  ConvertCatalogCoordinatesConfig
 
class  MatcherProbabilistic
 
class  MatchProbabilisticConfig
 

Functions

 _mul_column (np.array column, float value)
 
 _radec_to_xyz (ra, dec)
 
 default_value (dtype)
 

Variables

 logger_default = logging.getLogger(__name__)
 

Function Documentation

◆ _mul_column()

lsst.meas.astrom.matcher_probabilistic._mul_column ( np.array column,
float value )
protected

Definition at line 37 of file matcher_probabilistic.py.

37def _mul_column(column: np.array, value: float):
38 if value is not None and value != 1:
39 column *= value
40 return column
41
42

◆ _radec_to_xyz()

lsst.meas.astrom.matcher_probabilistic._radec_to_xyz ( ra,
dec )
protected
Convert input ra/dec coordinates to spherical unit vectors.

Parameters
----------
ra, dec: `numpy.ndarray`
    Arrays of right ascension/declination in degrees.

Returns
-------
vectors : `numpy.ndarray`, (N, 3)
    Output unit vectors.

Definition at line 43 of file matcher_probabilistic.py.

43def _radec_to_xyz(ra, dec):
44 """Convert input ra/dec coordinates to spherical unit vectors.
45
46 Parameters
47 ----------
48 ra, dec: `numpy.ndarray`
49 Arrays of right ascension/declination in degrees.
50
51 Returns
52 -------
53 vectors : `numpy.ndarray`, (N, 3)
54 Output unit vectors.
55 """
56 if ra.size != dec.size:
57 raise ValueError('ra and dec must be same size')
58 ras = np.radians(ra)
59 decs = np.radians(dec)
60 vectors = np.empty((ras.size, 3))
61
62 sin_dec = np.sin(np.pi / 2 - decs)
63 vectors[:, 0] = sin_dec * np.cos(ras)
64 vectors[:, 1] = sin_dec * np.sin(ras)
65 vectors[:, 2] = np.cos(np.pi / 2 - decs)
66
67 return vectors
68
69
70@dataclass

◆ default_value()

lsst.meas.astrom.matcher_probabilistic.default_value ( dtype)

Definition at line 404 of file matcher_probabilistic.py.

404def default_value(dtype):
405 if dtype == str:
406 return ''
407 elif dtype == np.signedinteger:
408 return np.Inf
409 elif dtype == np.unsignedinteger:
410 return -np.Inf
411 return None
412
413

Variable Documentation

◆ logger_default

lsst.meas.astrom.matcher_probabilistic.logger_default = logging.getLogger(__name__)

Definition at line 34 of file matcher_probabilistic.py.