LSSTApplications  19.0.0-10-g4a5fae6+3,19.0.0-10-g920eed2,19.0.0-11-g48a0200+2,19.0.0-18-gfc4e62b+16,19.0.0-2-g3b2f90d+2,19.0.0-2-gd671419+6,19.0.0-20-g5a5a17ab+14,19.0.0-21-g2644856+17,19.0.0-24-g0913cb1,19.0.0-24-g878c510+4,19.0.0-25-g6c8df7140+1,19.0.0-25-gb330496+4,19.0.0-3-g2b32d65+6,19.0.0-3-g8227491+15,19.0.0-3-g9c54d0d+15,19.0.0-3-gca68e65+11,19.0.0-3-gcfc5f51+6,19.0.0-3-ge110943+14,19.0.0-3-ge74d124,19.0.0-30-g9c3fd16+5,19.0.0-4-g06f5963+6,19.0.0-4-g10df615,19.0.0-4-g3d16501+17,19.0.0-4-g4a9c019+6,19.0.0-4-g5a8b323,19.0.0-4-g66397f0+1,19.0.0-4-g8557e14,19.0.0-4-g8964aba+16,19.0.0-4-ge404a01+15,19.0.0-5-g40f3a5a,19.0.0-5-g4db63b3,19.0.0-5-gb9eeb60,19.0.0-5-gfb03ce7+16,19.0.0-6-gbaebbfb+15,19.0.0-61-gec4c6e08+5,19.0.0-7-g039c0b5+15,19.0.0-7-gbea9075+4,19.0.0-7-gc567de5+16,19.0.0-72-g37abf38+2,19.0.0-9-g463f923+15,v20.0.0.rc1
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()
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
lsst::meas::astrom.setMatchDistance.setMatchDistance
def setMatchDistance(matches)
Definition: setMatchDistance.py:28