lsst.meas.base  20.0.0-4-gb4befbc+ac216f0d06
Public Member Functions | Static Public Member Functions | Public Attributes | Static Public Attributes | List of all members
lsst.meas.base.sfm.SingleFramePlugin Class Reference
Inheritance diagram for lsst.meas.base.sfm.SingleFramePlugin:
lsst.meas.base.baseMeasurement.BaseMeasurementPlugin lsst.meas.base.pluginsBase.BasePlugin lsst.meas.base.plugins.SingleFrameFPPositionPlugin lsst.meas.base.plugins.SingleFrameJacobianPlugin lsst.meas.base.plugins.SingleFramePeakCentroidPlugin lsst.meas.base.plugins.SingleFrameSkyCoordPlugin lsst.meas.base.wrappers.WrappedSingleFramePlugin

Public Member Functions

def __init__ (self, config, name, schema, metadata, logName=None, **kwds)
 
def measure (self, measRecord, exposure)
 
def measureN (self, measCat, exposure)
 
def getExecutionOrder (cls)
 
def getLogName (self)
 
def fail (self, measRecord, error=None)
 

Static Public Member Functions

def getTransformClass ()
 

Public Attributes

 config
 
 name
 
 logName
 

Static Public Attributes

 registry = PluginRegistry(SingleFramePluginConfig)
 
 ConfigClass = SingleFramePluginConfig
 
float CENTROID_ORDER = 0.0
 
float SHAPE_ORDER = 1.0
 
float FLUX_ORDER = 2.0
 
float APCORR_ORDER = 3.0
 
float DEFAULT_CATALOGCALCULATION = 4.0
 

Detailed Description

Base class for single-frame measurement plugin.

Parameters
----------
config : `SingleFramePlugin.ConfigClass`
    Configuration for this plugin.
name : `str`
    The string with which the plugin was registered.
schema : `lsst.afw.table.Schema`
    The schema for the source table . New fields are added here to
    hold measurements produced by this plugin.
metadata : `lsst.daf.base.PropertySet`
    Plugin metadata that will be attached to the output catalog
logName : `str`, optional
    Name to use when logging errors.

Notes
-----
New plugins can be created in Python by inheriting directly from this
class and implementing the `measure`, `fail` (from `BasePlugin`), and
optionally `__init__` and `measureN` methods.  Plugins can also be defined
in C++ via the `WrappedSingleFramePlugin` class.

Definition at line 51 of file sfm.py.

Constructor & Destructor Documentation

◆ __init__()

def lsst.meas.base.sfm.SingleFramePlugin.__init__ (   self,
  config,
  name,
  schema,
  metadata,
  logName = None,
**  kwds 
)

Definition at line 82 of file sfm.py.

Member Function Documentation

◆ fail()

def lsst.meas.base.pluginsBase.BasePlugin.fail (   self,
  measRecord,
  error = None 
)
inherited
Record a failure of the `measure` or `measureN` method.

Parameters
----------
measRecord : `lsst.afw.table.SourceRecord`
    Table record describing the source being measured.
error : `MeasurementError`, optional
    Only provided if the measurement failed due to a
    `MeasurementError` being raised; otherwise, will be `None`.

Notes
-----
When the plugin raises an exception, framework will call
`BasePlugin.fail` to allow the plugin to set its failure flag
field(s).  When `BasePlugin.measureN` raises an exception,
`BasePlugin.fail` will be called repeatedly with all the records that
were being measured.

If the exception is an `MeasurementError`, it will be passed as the
error argument; in all other cases the error argument will be `None`,
and the failure will be logged by the measurement framework as a
warning.

Reimplemented in lsst.meas.base.plugins.SingleFrameSkyCoordPlugin, lsst.meas.base.plugins.SingleFramePeakCentroidPlugin, lsst.meas.base.wrappers.GenericPlugin, lsst.meas.base.plugins.InputCountPlugin, lsst.meas.base.plugins.VariancePlugin, lsst.meas.base.plugins.SingleFrameJacobianPlugin, lsst.meas.base.plugins.SingleFrameFPPositionPlugin, lsst.meas.base.classification.CatalogCalculationClassificationPlugin, lsst.meas.base.wrappers.WrappedForcedPlugin, lsst.meas.base.footprintArea.CatalogCalculationFootprintAreaPlugin, and lsst.meas.base.wrappers.WrappedSingleFramePlugin.

Definition at line 137 of file pluginsBase.py.

◆ getExecutionOrder()

def lsst.meas.base.pluginsBase.BasePlugin.getExecutionOrder (   cls)
inherited

◆ getLogName()

def lsst.meas.base.pluginsBase.BasePlugin.getLogName (   self)
inherited

Definition at line 134 of file pluginsBase.py.

◆ getTransformClass()

def lsst.meas.base.pluginsBase.BasePlugin.getTransformClass ( )
staticinherited
Get the measurement transformation appropriate to this plugin.

This returns a subclass of `transforms.MeasurementTransform`, which
may be instantiated with details of the algorithm configuration and
then called with information about calibration and WCS to convert from
raw measurement quantities to calibrated units. Calibrated data is
then provided in a separate output table.

Notes
-----
By default, we copy everything from the input to the output without
transformation.

Reimplemented in lsst.meas.base.plugins.ForcedPeakCentroidPlugin, and lsst.meas.base.plugins.SingleFramePeakCentroidPlugin.

Definition at line 169 of file pluginsBase.py.

◆ measure()

def lsst.meas.base.sfm.SingleFramePlugin.measure (   self,
  measRecord,
  exposure 
)
Measure the properties of a source on a single image.

The image may be from a single epoch, or it may be a coadd.

Parameters
----------
measRecord : `lsst.afw.table.SourceRecord`
    Record describing the object being measured. Previously-measured
    quantities may be retrieved from here, and it will be updated
    in-place tih the outputs of this plugin.
exposure : `lsst.afw.image.ExposureF`
    The pixel data to be measured, together with the associated PSF,
    WCS, etc. All other sources in the image should have been replaced
    by noise according to deblender outputs.

Reimplemented in lsst.meas.base.plugins.SingleFrameSkyCoordPlugin, lsst.meas.base.plugins.SingleFramePeakCentroidPlugin, lsst.meas.base.plugins.SingleFrameJacobianPlugin, lsst.meas.base.plugins.SingleFrameFPPositionPlugin, and lsst.meas.base.wrappers.WrappedSingleFramePlugin.

Definition at line 85 of file sfm.py.

◆ measureN()

def lsst.meas.base.sfm.SingleFramePlugin.measureN (   self,
  measCat,
  exposure 
)
Measure the properties of blended sources on a single image.

This operates on all members of a blend family at once. The image may
be from a single epoch, or it may be a coadd.

Parameters
----------
measCat : `lsst.afw.table.SourceCatalog`
    Catalog describing the objects (and only those objects) being
    measured. Previously-measured quantities will be retrieved from
    here, and it will be updated in-place with the outputs of this
    plugin.
exposure : `lsst.afw.image.ExposureF`
    The pixel data to be measured, together with the associated PSF,
    WCS, etc. All other sources in the image should have been replaced
    by noise according to deblender outputs.

Notes
-----
Derived classes that do not implement ``measureN`` should just inherit
this disabled version.  Derived classes that do implement ``measureN``
should additionally add a bool doMeasureN config field to their config
class to signal that measureN-mode is available.

Reimplemented in lsst.meas.base.wrappers.WrappedSingleFramePlugin.

Definition at line 103 of file sfm.py.

Member Data Documentation

◆ APCORR_ORDER

float lsst.meas.base.pluginsBase.BasePlugin.APCORR_ORDER = 3.0
staticinherited

Definition at line 98 of file pluginsBase.py.

◆ CENTROID_ORDER

float lsst.meas.base.pluginsBase.BasePlugin.CENTROID_ORDER = 0.0
staticinherited

Definition at line 72 of file pluginsBase.py.

◆ config

lsst.meas.base.pluginsBase.BasePlugin.config
inherited

Definition at line 130 of file pluginsBase.py.

◆ ConfigClass

lsst.meas.base.sfm.SingleFramePlugin.ConfigClass = SingleFramePluginConfig
static

Definition at line 80 of file sfm.py.

◆ DEFAULT_CATALOGCALCULATION

float lsst.meas.base.pluginsBase.BasePlugin.DEFAULT_CATALOGCALCULATION = 4.0
staticinherited

Definition at line 108 of file pluginsBase.py.

◆ FLUX_ORDER

float lsst.meas.base.pluginsBase.BasePlugin.FLUX_ORDER = 2.0
staticinherited

Definition at line 89 of file pluginsBase.py.

◆ logName

lsst.meas.base.pluginsBase.BasePlugin.logName
inherited

Definition at line 132 of file pluginsBase.py.

◆ name

lsst.meas.base.pluginsBase.BasePlugin.name
inherited

Definition at line 131 of file pluginsBase.py.

◆ registry

lsst.meas.base.sfm.SingleFramePlugin.registry = PluginRegistry(SingleFramePluginConfig)
static

Definition at line 76 of file sfm.py.

◆ SHAPE_ORDER

float lsst.meas.base.pluginsBase.BasePlugin.SHAPE_ORDER = 1.0
staticinherited

Definition at line 80 of file pluginsBase.py.


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