lsst.meas.algorithms g728939a55c+71a2f45ad6
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Public Member Functions | Public Attributes | Static Public Attributes | Protected Member Functions | List of all members
lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask Class Reference
Inheritance diagram for lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask:
lsst.meas.algorithms.sourceSelector.BaseSourceSelectorTask

Public Member Functions

 __init__ (self, *args, **kwargs)
 
 selectSources (self, sourceCat, matches=None, exposure=None)
 

Public Attributes

 parentKey
 
 nChildKey
 
 centroidXKey
 
 centroidYKey
 
 centroidXErrKey
 
 centroidYErrKey
 
 centroidFlagKey
 
 primaryKey
 
 edgeKey
 
 interpolatedCenterKey
 
 saturatedKey
 
 instFluxKey
 
 fluxFlagKey
 
 instFluxErrKey
 

Static Public Attributes

 ConfigClass = AstrometrySourceSelectorConfig
 

Protected Member Functions

 _getSchemaKeys (self, schema)
 
 _isMultiple (self, sourceCat)
 
 _hasCentroid (self, sourceCat)
 
 _goodSN (self, sourceCat)
 
 _isUsable (self, sourceCat)
 
 _isPrimary (self, sourceCat)
 
 _isGood (self, sourceCat)
 
 _isBadFlagged (self, source)
 

Detailed Description

Select sources that are useful for astrometry.

Good astrometry sources have high signal/noise, are non-blended, and
did not have certain "bad" flags set during source extraction. They need not
be PSF sources, just have reliable centroids.

Definition at line 65 of file astrometrySourceSelector.py.

Constructor & Destructor Documentation

◆ __init__()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.__init__ (   self,
args,
**  kwargs 
)

Member Function Documentation

◆ _getSchemaKeys()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._getSchemaKeys (   self,
  schema 
)
protected
Extract and save the necessary keys from schema with asKey.

Definition at line 105 of file astrometrySourceSelector.py.

◆ _goodSN()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._goodSN (   self,
  sourceCat 
)
protected
Return True for each source that has Signal/Noise > config.minSnr.

Definition at line 153 of file astrometrySourceSelector.py.

◆ _hasCentroid()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._hasCentroid (   self,
  sourceCat 
)
protected
Return True for each source that has a valid centroid

Definition at line 139 of file astrometrySourceSelector.py.

◆ _isBadFlagged()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._isBadFlagged (   self,
  source 
)
protected
Return True if any of config.badFlags are set for this source.

Definition at line 202 of file astrometrySourceSelector.py.

◆ _isGood()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._isGood (   self,
  sourceCat 
)
protected
Return True for each source that is usable for matching and likely has a
good centroid.

The additional tests for a good centroid, beyond isUsable, are:
- not interpolated in the center
- not saturated
- not near the edge

Definition at line 186 of file astrometrySourceSelector.py.

◆ _isMultiple()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._isMultiple (   self,
  sourceCat 
)
protected
Return True for each source that is likely multiple sources.

Definition at line 129 of file astrometrySourceSelector.py.

◆ _isPrimary()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._isPrimary (   self,
  sourceCat 
)
protected
Return True if this is a primary source.

Definition at line 178 of file astrometrySourceSelector.py.

◆ _isUsable()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask._isUsable (   self,
  sourceCat 
)
protected
Return True for each source that is usable for matching, even if it may
have a poor centroid.

For a source to be usable it must:
- have a valid centroid
- not be deblended
- have a valid flux (of the type specified in this object's constructor)
- have adequate signal-to-noise

Definition at line 162 of file astrometrySourceSelector.py.

◆ selectSources()

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.selectSources (   self,
  sourceCat,
  matches = None,
  exposure = None 
)
Return a selection of sources that are useful for astrometry.

Parameters
----------
sourceCat : `lsst.afw.table.SourceCatalog`
    Catalog of sources to select from.
    This catalog must be contiguous in memory.
matches : `list` of `lsst.afw.table.ReferenceMatch` or None
    Ignored in this SourceSelector.
exposure : `lsst.afw.image.Exposure` or None
    The exposure the catalog was built from; used for debug display.

Returns
-------
struct : `lsst.pipe.base.Struct`
    The struct contains the following data:

    ``selected``
        Boolean array of sources that were selected, same length as
        sourceCat. (`numpy.ndarray` of `bool`)

Reimplemented from lsst.meas.algorithms.sourceSelector.BaseSourceSelectorTask.

Definition at line 77 of file astrometrySourceSelector.py.

Member Data Documentation

◆ centroidFlagKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.centroidFlagKey

Definition at line 114 of file astrometrySourceSelector.py.

◆ centroidXErrKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.centroidXErrKey

Definition at line 112 of file astrometrySourceSelector.py.

◆ centroidXKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.centroidXKey

Definition at line 110 of file astrometrySourceSelector.py.

◆ centroidYErrKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.centroidYErrKey

Definition at line 113 of file astrometrySourceSelector.py.

◆ centroidYKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.centroidYKey

Definition at line 111 of file astrometrySourceSelector.py.

◆ ConfigClass

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.ConfigClass = AstrometrySourceSelectorConfig
static

Definition at line 72 of file astrometrySourceSelector.py.

◆ edgeKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.edgeKey

Definition at line 120 of file astrometrySourceSelector.py.

◆ fluxFlagKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.fluxFlagKey

Definition at line 126 of file astrometrySourceSelector.py.

◆ instFluxErrKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.instFluxErrKey

Definition at line 127 of file astrometrySourceSelector.py.

◆ instFluxKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.instFluxKey

Definition at line 125 of file astrometrySourceSelector.py.

◆ interpolatedCenterKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.interpolatedCenterKey

Definition at line 121 of file astrometrySourceSelector.py.

◆ nChildKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.nChildKey

Definition at line 109 of file astrometrySourceSelector.py.

◆ parentKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.parentKey

Definition at line 108 of file astrometrySourceSelector.py.

◆ primaryKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.primaryKey

Definition at line 116 of file astrometrySourceSelector.py.

◆ saturatedKey

lsst.meas.algorithms.astrometrySourceSelector.AstrometrySourceSelectorTask.saturatedKey

Definition at line 122 of file astrometrySourceSelector.py.


The documentation for this class was generated from the following file: