Inheritance diagram for lsst.meas.base.plugins.VariancePlugin:

Public Member Functions
	getExecutionOrder (cls)

	__init__ (self, config, name, schema, metadata)

	measure (self, measRecord, exposure, center)

	fail (self, measRecord, error=None)

	measureN (self, measCat, exposure, refCat, refWcs)

	makeSingleFramePlugin (cls, name)

	makeForcedPlugin (cls, name)

	getLogName (self)

Static Public Member Functions
	getTransformClass ()

Public Attributes
	varValue = schema.addField(name + '_value', type="D", doc="Variance at object position")

	emptyFootprintFlag

	config = config

	name = name

	logName = logName

Static Public Attributes
int	FAILURE_BAD_CENTROID = 1

int	FAILURE_EMPTY_FOOTPRINT = 2

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

	ConfigClass = BasePluginConfig

Protected Attributes
	_failKey = schema.addField(name + '_flag', type="Flag", doc="Set for any fatal failure")

	_generic = cls(config, name, schema, metadata)

Detailed Description

Compute the median variance corresponding to a footprint.

The aim here is to measure the background variance, rather than that of
the object itself. In order to achieve this, the variance is calculated
over an area scaled up from the shape of the input footprint.

Parameters
----------
config : `VarianceConfig`
    Plugin configuration.
name : `str`
    Plugin name.
schema : `lsst.afw.table.Schema`
    The schema for the measurement output catalog. New fields will be
    added to hold measurements produced by this plugin.
metadata : `lsst.daf.base.PropertySet`
    Plugin metadata that will be attached to the output catalog

Definition at line 231 of file plugins.py.

Constructor & Destructor Documentation

◆ init()

lsst.meas.base.plugins.VariancePlugin.__init__	(	self,
		config,
		name,
		schema,
		metadata )

Definition at line 265 of file plugins.py.

Member Function Documentation

◆ fail()

lsst.meas.base.plugins.VariancePlugin.fail	(	self,
		measRecord,
		error = None )

Record a measurement failure.

This default implementation simply records the failure in the source
record.

Parameters
----------
measRecord : `lsst.afw.table.SourceRecord`
    Catalog record for the source being measured.
error : `Exception`
    Error causing failure, or `None`.

Reimplemented from lsst.meas.base.wrappers.GenericPlugin.

Definition at line 304 of file plugins.py.

◆ getExecutionOrder()

lsst.meas.base.plugins.VariancePlugin.getExecutionOrder ( cls )

Get the relative execution order of this plugin.

Must be reimplemented as a class method by concrete derived classes.

Reimplemented from lsst.meas.base.wrappers.GenericPlugin.

Definition at line 262 of file plugins.py.

◆ getLogName()

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

inherited

Definition at line 134 of file pluginsBase.py.

◆ getTransformClass()

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.

◆ makeForcedPlugin()

lsst.meas.base.wrappers.GenericPlugin.makeForcedPlugin	(		cls,
			name )

inherited

Produce a ForcedPlugin subclass from this GenericPlugin class.

The class is also registered.

Parameters
----------
name : `str`
    Name of plugin to register.

Definition at line 652 of file wrappers.py.

◆ makeSingleFramePlugin()

lsst.meas.base.wrappers.GenericPlugin.makeSingleFramePlugin	(		cls,
			name )

inherited

Produce a SingleFramePlugin subclass from this GenericPlugin class.

The class is also registered.

Parameters
----------
name : `str`
    Name of plugin to register.

Definition at line 611 of file wrappers.py.

◆ measure()

lsst.meas.base.plugins.VariancePlugin.measure	(	self,
		measRecord,
		exposure,
		center )

Measure a single source.

It is the responsibility of this method to perform the desired
measurement and record the result in the `measRecord`.

Parameters
----------
measRecord : `lsst.afw.table.SourceRecord`
    Catalog record for the source being measured.
exposure : `lsst.afw.image.Exposure`
    Exposure on which the source is being measured.
center : `lsst.geom.Point2D`
    Pixel coordinates of the object.

Raises
------
MeasurementError
    Raised if the measurement fails for a known/justifiable reason.

Reimplemented from lsst.meas.base.wrappers.GenericPlugin.

Definition at line 276 of file plugins.py.

◆ measureN()

lsst.meas.base.wrappers.GenericPlugin.measureN	(	self,
		measCat,
		exposure,
		refCat,
		refWcs )

inherited

Measure multiple sources.

It is the responsibility of this method to perform the desired
measurement and record the result in the `measCat`.

Parameters
----------
measCat : `lsst.afw.table.SourceCatalog`
    Catalog for the sources being measured.
exposure : `lsst.afw.image.Exposure`
    Exposure on which the source is being measured.
refCat : `lsst.afw.table.SourceCatalog`
    Reference catalog.
refWcs : `lsst.afw.image.Wcs`
    Astrometric solution for the reference image.

Raises
------
MeasurementError
    Raised if the measurement fails for a known/justifiable reason.

Definition at line 571 of file wrappers.py.

Member Data Documentation

◆ _failKey

lsst.meas.base.wrappers.GenericPlugin._failKey = schema.addField(name + '_flag', type="Flag", doc="Set for any fatal failure")

protectedinherited

Definition at line 547 of file wrappers.py.

◆ _generic

lsst.meas.base.wrappers.GenericPlugin._generic = cls(config, name, schema, metadata)

protectedinherited

Definition at line 630 of file wrappers.py.

◆ 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 = config

inherited

Definition at line 130 of file pluginsBase.py.

◆ ConfigClass

lsst.meas.base.pluginsBase.BasePlugin.ConfigClass = BasePluginConfig

staticinherited

Definition at line 116 of file pluginsBase.py.

◆ DEFAULT_CATALOGCALCULATION

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

staticinherited

Definition at line 108 of file pluginsBase.py.

◆ emptyFootprintFlag

lsst.meas.base.plugins.VariancePlugin.emptyFootprintFlag

Initial value:

= schema.addField(name + '_flag_emptyFootprint', type="Flag",

doc="Set to True when the footprint has no usable pixels")

Definition at line 268 of file plugins.py.

◆ FAILURE_BAD_CENTROID

lsst.meas.base.plugins.VariancePlugin.FAILURE_BAD_CENTROID = 1

static

Definition at line 253 of file plugins.py.

◆ FAILURE_EMPTY_FOOTPRINT

lsst.meas.base.plugins.VariancePlugin.FAILURE_EMPTY_FOOTPRINT = 2

static

Definition at line 257 of file plugins.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 = logName

inherited

Definition at line 132 of file pluginsBase.py.

◆ name

lsst.meas.base.pluginsBase.BasePlugin.name = name

inherited

Definition at line 131 of file pluginsBase.py.

◆ SHAPE_ORDER

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

staticinherited

Definition at line 80 of file pluginsBase.py.

◆ varValue

lsst.meas.base.plugins.VariancePlugin.varValue = schema.addField(name + '_value', type="D", doc="Variance at object position")

Definition at line 267 of file plugins.py.

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

python/lsst/meas/base/plugins.py

Public Member Functions

Static Public Member Functions

Public Attributes

Static Public Attributes

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ __init__()

Member Function Documentation

◆ fail()

◆ getExecutionOrder()

◆ getLogName()

◆ getTransformClass()

◆ makeForcedPlugin()

◆ makeSingleFramePlugin()

◆ measure()

◆ measureN()

Member Data Documentation

◆ _failKey

◆ _generic

◆ APCORR_ORDER

◆ CENTROID_ORDER

◆ config

◆ ConfigClass

◆ DEFAULT_CATALOGCALCULATION

◆ emptyFootprintFlag

◆ FAILURE_BAD_CENTROID

◆ FAILURE_EMPTY_FOOTPRINT

◆ FLUX_ORDER

◆ logName

◆ name

◆ SHAPE_ORDER

◆ varValue

◆ init()