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LSST Data Management Base Package
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lsst::meas::base::FluxTransform Class Reference

Base for instFlux measurement transformations. More...

#include <FluxUtilities.h>

Inheritance diagram for lsst::meas::base::FluxTransform:
lsst::meas::base::BaseTransform lsst::meas::base::GaussianFluxTransform lsst::meas::base::LocalBackgroundTransform lsst::meas::base::PeakLikelihoodFluxTransform lsst::meas::base::PsfFluxTransform lsst::meas::base::ScaledApertureFluxTransform

Public Member Functions

 FluxTransform (std::string const &name, afw::table::SchemaMapper &mapper)
 
virtual void operator() (afw::table::SourceCatalog const &inputCatalog, afw::table::BaseCatalog &outputCatalog, afw::geom::SkyWcs const &wcs, afw::image::PhotoCalib const &photoCalib) const
 

Protected Member Functions

void checkCatalogSize (afw::table::BaseCatalog const &cat1, afw::table::BaseCatalog const &cat2) const
 Ensure that catalogs have the same size.
 

Protected Attributes

std::string _name
 

Detailed Description

Base for instFlux measurement transformations.

Provides a basic transform from instFlux plus associated uncertainty to magnitude with uncertainty. The basic "flag" attribute for the measurement algorithm is propagated to the output

Subclasses should define a constructor which take a Control argument corresponding to the measurement algorithm being transformed and ensure that any other necessary flags are propagated.

Definition at line 187 of file FluxUtilities.h.

Constructor & Destructor Documentation

◆ FluxTransform()

lsst::meas::base::FluxTransform::FluxTransform ( std::string const & name,
afw::table::SchemaMapper & mapper )

Definition at line 79 of file FluxUtilities.cc.

81 // Map the flag through to the output
82 mapper.addMapping(mapper.getInputSchema().find<afw::table::Flag>(name + "_flag").key);
83
84 // Add keys for the magnitude and associated error
85 _magKey = MagResultKey::addFields(mapper.editOutputSchema(), name);
86}
BaseTransform(std::string const &name)
Definition Transform.h:88
static MagResultKey addFields(afw::table::Schema &schema, std::string const &name)
Add a pair of _mag, _magErr fields to a Schema, and return a MagResultKey that points to them.

Member Function Documentation

◆ checkCatalogSize()

void lsst::meas::base::BaseTransform::checkCatalogSize ( afw::table::BaseCatalog const & cat1,
afw::table::BaseCatalog const & cat2 ) const
inlineprotectedinherited

Ensure that catalogs have the same size.

Parameters
[in]cat1Catalog for comparison
[in]cat2Catalog for comparison
Exceptions
LengthErrorCatalog sizes do not match

Definition at line 102 of file Transform.h.

102 {
103 if (cat1.size() != cat2.size()) {
104 throw LSST_EXCEPT(pex::exceptions::LengthError, "Catalog size mismatch");
105 }
106 }
#define LSST_EXCEPT(type,...)
Create an exception with a given type.
Definition Exception.h:48

◆ operator()()

void lsst::meas::base::FluxTransform::operator() ( afw::table::SourceCatalog const & inputCatalog,
afw::table::BaseCatalog & outputCatalog,
afw::geom::SkyWcs const & wcs,
afw::image::PhotoCalib const & photoCalib ) const
virtual

Implements lsst::meas::base::BaseTransform.

Definition at line 88 of file FluxUtilities.cc.

90 {
91 checkCatalogSize(inputCatalog, outputCatalog);
92 FluxResultKey instFluxKey(inputCatalog.getSchema()[_name]);
93 afw::table::SourceCatalog::const_iterator inSrc = inputCatalog.begin();
94 afw::table::BaseCatalog::iterator outSrc = outputCatalog.begin();
95 {
96 for (; inSrc != inputCatalog.end() && outSrc != outputCatalog.end(); ++inSrc, ++outSrc) {
97 FluxResult instFluxResult = instFluxKey.get(*inSrc);
98 _magKey.set(*outSrc,
99 photoCalib.instFluxToMagnitude(instFluxResult.instFlux, instFluxResult.instFluxErr));
100 }
101 }
102}
CatalogIterator< typename Internal::iterator > iterator
Definition Catalog.h:110
typename Base::const_iterator const_iterator
void checkCatalogSize(afw::table::BaseCatalog const &cat1, afw::table::BaseCatalog const &cat2) const
Ensure that catalogs have the same size.
Definition Transform.h:102

Member Data Documentation

◆ _name

std::string lsst::meas::base::BaseTransform::_name
protectedinherited

Definition at line 107 of file Transform.h.


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