lsst.meas.astrom ga6835749f4+6fa501ee91
Functions
lsst.meas.astrom.denormalizeMatches Namespace Reference

Functions

def denormalizeMatches (matches, matchMeta=None)
 

Function Documentation

◆ denormalizeMatches()

def lsst.meas.astrom.denormalizeMatches.denormalizeMatches (   matches,
  matchMeta = None 
)
Generate a denormalized Catalog of matches

Parameters
----------
matches : `list` of `lsst.afw.table.ReferenceMatch`
    List of matches between reference catalog and source catalog.
matchMeta : `lsst.daf.base.PropertyList`
    Matching metadata to write in catalog.

Returns
-------
catalog : `lsst.afw.table.BaseCatalog`
    Catalog containing matchlist entries.

Notes
-----
This is intended for writing matches in a convenient way.
Normally we write matches in a 'normalized' form: recording only the join
table (reference ID, source ID) to minimise space (the reference and source
catalogs should both be available separately, so the only extra information
we need is how to join them). However, using that can be a pain, since it
requires reading each catalog and doing the join.

This function generates a Catalog containing all the information in the
matches. The reference catalog entries are in columns with 'ref'
prepended, while the source catalog entries are in columns with 'src'
prepended (including any alias mappings). The distance between the
matches is in a column named "distance".

See Also
--------
lsst.afw.table.packMatches

Definition at line 27 of file denormalizeMatches.py.