LSSTApplications  17.0+124,17.0+14,17.0+73,18.0.0+37,18.0.0+80,18.0.0-4-g68ffd23+4,18.1.0-1-g0001055+12,18.1.0-1-g03d53ef+5,18.1.0-1-g1349e88+55,18.1.0-1-g2505f39+44,18.1.0-1-g5315e5e+4,18.1.0-1-g5e4b7ea+14,18.1.0-1-g7e8fceb+4,18.1.0-1-g85f8cd4+48,18.1.0-1-g8ff0b9f+4,18.1.0-1-ga2c679d+1,18.1.0-1-gd55f500+35,18.1.0-10-gb58edde+2,18.1.0-11-g0997b02+4,18.1.0-13-gfe4edf0b+12,18.1.0-14-g259bd21+21,18.1.0-19-gdb69f3f+2,18.1.0-2-g5f9922c+24,18.1.0-2-gd3b74e5+11,18.1.0-2-gfbf3545+32,18.1.0-26-g728bddb4+5,18.1.0-27-g6ff7ca9+2,18.1.0-3-g52aa583+25,18.1.0-3-g8ea57af+9,18.1.0-3-gb69f684+42,18.1.0-3-gfcaddf3+6,18.1.0-32-gd8786685a,18.1.0-4-gf3f9b77+6,18.1.0-5-g1dd662b+2,18.1.0-5-g6dbcb01+41,18.1.0-6-gae77429+3,18.1.0-7-g9d75d83+9,18.1.0-7-gae09a6d+30,18.1.0-9-gc381ef5+4,w.2019.45
LSSTDataManagementBasePackage
Functions
lsst.meas.astrom.setMatchDistance Namespace Reference

Functions

def setMatchDistance (matches)
 

Function Documentation

◆ setMatchDistance()

def lsst.meas.astrom.setMatchDistance.setMatchDistance (   matches) 
Set the distance field of the matches in a match list to the distance in
radians on the sky.

Parameters
----------
matches : `list` of `lsst.afw.table.ReferenceMatch`
    a list of matches, reads the coord field of the source and reference
    object of each match writes the distance field of each match

Notes
-----
.. warning::
   the coord field of the source in each match must be correct

Definition at line 28 of file setMatchDistance.py.

28 def setMatchDistance(matches):
29  """Set the distance field of the matches in a match list to the distance in
30  radians on the sky.
31 
32  Parameters
33  ----------
34  matches : `list` of `lsst.afw.table.ReferenceMatch`
35  a list of matches, reads the coord field of the source and reference
36  object of each match writes the distance field of each match
37 
38  Notes
39  -----
40  .. warning::
41  the coord field of the source in each match must be correct
42  """
43  if len(matches) < 1:
44  return
45 
46  sourceCoordKey = afwTable.CoordKey(matches[0].first.schema["coord"])
47  refObjCoordKey = afwTable.CoordKey(matches[0].second.schema["coord"])
48  for match in matches:
49  sourceCoord = match.first.get(sourceCoordKey)
50  refObjCoord = match.second.get(refObjCoordKey)
51  match.distance = refObjCoord.separation(sourceCoord).asRadians()
52 
lsst::afw::table::CoordKey
A FunctorKey used to get or set celestial coordinates from a pair of lsst::geom::Angle keys...
Definition: aggregates.h:210
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