File SdssCentroid.h

This implements the SdssCentroid algorithm within the meas_base measurement framework

namespace lsst

Class for a simple mapping implementing a generic AstrometryTransform.

Remove all non-astronomical counts from the Chunk Exposure’s pixels.

Forward declarations for lsst::utils::Cache

For details on the Cache class, see the Cache.h file.

It uses a template rather than a pointer so that the derived classes can use the specifics of the transform. The class simplePolyMapping overloads a few routines.

A base class for image defects

Numeric constants used by the Integrate.h integrator routines.

Compute Image Statistics

Note

Gauss-Kronrod-Patterson quadrature coefficients for use in quadpack routine qng. These coefficients were calculated with 101 decimal digit arithmetic by L. W. Fullerton, Bell Labs, Nov 1981.

Note

The Statistics class itself can only handle lsst::afw::image::MaskedImage() types. The philosophy has been to handle other types by making them look like lsst::afw::image::MaskedImage() and reusing that code. Users should have no need to instantiate a Statistics object directly, but should use the overloaded makeStatistics() factory functions.

namespace meas

namespace base

class SdssCentroidAlgorithm : public lsst::meas::base::SimpleAlgorithm

#include <SdssCentroid.h>

The Sdss Centroid Algorithm.

Public Types

typedef SdssCentroidControl Control

A typedef to the Control object for this algorithm, defined above. The control object contains the configuration parameters for this algorithm.

Public Functions

SdssCentroidAlgorithm(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.

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.

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.

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.

Public Static Functions

static FlagDefinitionList const &getFlagDefinitions()

Public Static Attributes

FlagDefinition const FAILURE

FlagDefinition const EDGE

FlagDefinition const NO_SECOND_DERIVATIVE

FlagDefinition const ALMOST_NO_SECOND_DERIVATIVE

FlagDefinition const NOT_AT_MAXIMUM

Private Members

Control _ctrl

CentroidResultKey _centroidKey

FlagHandler _flagHandler

SafeCentroidExtractor _centroidExtractor

CentroidChecker _centroidChecker

class SdssCentroidControl

#include <SdssCentroid.h>

A C++ control class to handle SdssCentroidAlgorithm’s configuration.

Public Functions

lsst::meas::base::SdssCentroidControl::LSST_CONTROL_FIELD(binmax, int, "maximum allowed binning")

lsst::meas::base::SdssCentroidControl::LSST_CONTROL_FIELD(peakMin, double, "if the peak's less than this insist on binning at least once")

lsst::meas::base::SdssCentroidControl::LSST_CONTROL_FIELD(wfac, double, "fiddle factor for adjusting the binning")

lsst::meas::base::SdssCentroidControl::LSST_CONTROL_FIELD(doFootprintCheck, bool, "Do check that the centroid is contained in footprint.")

lsst::meas::base::SdssCentroidControl::LSST_CONTROL_FIELD(maxDistToPeak, double, "If set, 0, Centroid Check also checks distance from footprint peak.")

SdssCentroidControl()

Default constructor.

All control classes should define a default constructor that sets all fields to their default values.

class SdssCentroidTransform : public lsst::meas::base::CentroidTransform

Public Types

typedef SdssCentroidControl Control

Public Functions

SdssCentroidTransform(Control const &ctrl, std::string const &name, afw::table::SchemaMapper &mapper)