lsst.meas.base  14.0
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lsst::meas::base::GaussianFluxAlgorithm Class Reference

A measurement algorithm that estimates flux using an elliptical Gaussian weight. More...

#include <GaussianFlux.h>

Inheritance diagram for lsst::meas::base::GaussianFluxAlgorithm:
lsst::meas::base::SimpleAlgorithm lsst::meas::base::SingleFrameAlgorithm lsst::meas::base::ForcedAlgorithm lsst::meas::base::BaseAlgorithm lsst::meas::base::BaseAlgorithm

Public Types

typedef GaussianFluxControl Control
 A typedef to the Control object for this algorithm, defined above. More...
 

Public Member Functions

 GaussianFluxAlgorithm (Control const &ctrl, std::string const &name, afw::table::Schema &schema)
 
virtual void measure (afw::table::SourceRecord &measRecord, afw::image::Exposure< float > const &exposure) const
 Called to measure a single child source in an image. More...
 
virtual void fail (afw::table::SourceRecord &measRecord, MeasurementError *error=nullptr) const
 Handle an exception thrown by the current algorithm by setting flags in the given record. More...
 
- Public Member Functions inherited from lsst::meas::base::SimpleAlgorithm
virtual void measureForced (afw::table::SourceRecord &measRecord, afw::image::Exposure< float > const &exposure, afw::table::SourceRecord const &refRecord, afw::image::Wcs const &refWcs) const
 Called to measure a single child source in an image. More...
 
virtual void measureNForced (afw::table::SourceCatalog const &measCat, afw::image::Exposure< float > const &exposure, afw::table::SourceCatalog const &refRecord, afw::image::Wcs const &refWcs) const
 Called to simultaneously measure all children in a deblend family, in a single image. More...
 
- Public Member Functions inherited from lsst::meas::base::SingleFrameAlgorithm
virtual void measureN (afw::table::SourceCatalog const &measCat, afw::image::Exposure< float > const &exposure) const
 Called to simultaneously measure all children in a deblend family, in a single image. More...
 
- Public Member Functions inherited from lsst::meas::base::BaseAlgorithm
virtual ~BaseAlgorithm ()
 
std::string getLogName () const
 

Static Public Member Functions

static FlagDefinitionList const & getFlagDefinitions ()
 

Static Public Attributes

static FlagDefinition const FAILURE = flagDefinitions.addFailureFlag()
 

Additional Inherited Members

- Protected Attributes inherited from lsst::meas::base::BaseAlgorithm
std::string _logName
 

Detailed Description

A measurement algorithm that estimates flux using an elliptical Gaussian weight.

This algorithm computes flux as the dot product of an elliptical Gaussian weight function with the image. The size and ellipticity of the weight function are determined using the SdssShape algorithm, or retreived from a named field.

Definition at line 62 of file GaussianFlux.h.

Member Typedef Documentation

A typedef to the Control object for this algorithm, defined above.

The control object contains the configuration parameters for this algorithm.

Definition at line 71 of file GaussianFlux.h.

Constructor & Destructor Documentation

lsst::meas::base::GaussianFluxAlgorithm::GaussianFluxAlgorithm ( Control const &  ctrl,
std::string const &  name,
afw::table::Schema &  schema 
)

Definition at line 45 of file GaussianFlux.cc.

Member Function Documentation

void lsst::meas::base::GaussianFluxAlgorithm::fail ( afw::table::SourceRecord &  measRecord,
MeasurementError error = nullptr 
) const
virtual

Handle an exception thrown by the current algorithm by setting flags in the given record.

fail() is called by the measurement framework when an exception is allowed to propagate out of one the algorithm's measure() methods. It should generally set both a general failure flag for the algorithm as well as a specific flag indicating the error condition, if possible. To aid in this, if the exception was an instance of MeasurementError, it will be passed in, carrying information about what flag to set.

An algorithm can also to chose to set flags within its own measure() methods, and then just return, rather than throw an exception. However, fail() should be implemented even when all known failure modes do not throw exceptions, to ensure that unexpected exceptions thrown in lower-level code are properly handled.

Implements lsst::meas::base::BaseAlgorithm.

Definition at line 75 of file GaussianFlux.cc.

FlagDefinitionList const & lsst::meas::base::GaussianFluxAlgorithm::getFlagDefinitions ( )
static

Definition at line 40 of file GaussianFlux.cc.

void lsst::meas::base::GaussianFluxAlgorithm::measure ( afw::table::SourceRecord &  measRecord,
afw::image::Exposure< float > const &  exposure 
) const
virtual

Called to measure a single child source in an image.

Before this method is called, all neighbors will be replaced with noise, using the outputs of the deblender. Outputs should be saved in the given SourceRecord, which can also be used to obtain centroid (see SafeCentroidExtractor) and shape (see SafeShapeExtractor) information.

Implements lsst::meas::base::SingleFrameAlgorithm.

Definition at line 59 of file GaussianFlux.cc.

Member Data Documentation

FlagDefinition const lsst::meas::base::GaussianFluxAlgorithm::FAILURE = flagDefinitions.addFailureFlag()
static

Definition at line 67 of file GaussianFlux.h.


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