LSSTApplications  17.0+10,17.0+51,17.0+87,18.0.0+10,18.0.0+15,18.0.0+33,18.0.0+4,18.0.0+6,18.0.0-2-ge43143a+6,18.1.0-1-g0001055+2,18.1.0-1-g0896a44+9,18.1.0-1-g1349e88+8,18.1.0-1-g2505f39+6,18.1.0-1-g380d4d4+8,18.1.0-1-g5e4b7ea+2,18.1.0-1-g7e8fceb,18.1.0-1-g85f8cd4+6,18.1.0-1-g9a6769a+3,18.1.0-1-ga1a4c1a+5,18.1.0-1-gc037db8+2,18.1.0-1-gd55f500+3,18.1.0-1-ge10677a+6,18.1.0-10-g73b8679e+11,18.1.0-11-g311e899+7,18.1.0-12-gc95f69a+7,18.1.0-13-g451e75588,18.1.0-2-g31c43f9+6,18.1.0-2-g9c63283+8,18.1.0-2-gdf0b915+8,18.1.0-2-gf03bb23+2,18.1.0-3-g2e29e3d+9,18.1.0-3-g52aa583+3,18.1.0-3-g8f4a2b1,18.1.0-3-g9cb968e+7,18.1.0-4-gd2e8982+9,18.1.0-5-g510c42a+7,18.1.0-5-gaeab27e+8,18.1.0-6-gdda7f3e+10,18.1.0-8-g4084bf03,w.2019.33
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 
A FunctorKey used to get or set celestial coordinates from a pair of lsst::geom::Angle keys...
Definition: aggregates.h:210