File ScaledApertureFlux.h

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 ScaledApertureFluxAlgorithm : public lsst::meas::base::SimpleAlgorithm

#include <ScaledApertureFlux.h>

Measure the instFlux in an aperture scaled to the PSF.

This algorithm performs a sinc aperture instFlux measurement where they size of the aperture is determined by multiplying the FWHM of the PSF by the scaling factor specified in the algorithm configuration.

Public Types

typedef ScaledApertureFluxControl Control

typedef ApertureFluxResult Result

Public Functions

ScaledApertureFluxAlgorithm(Control const &control, std::string const &name, afw::table::Schema &schema)

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

Measure the scaled aperture instFlux on the given image.

Python plugins will delegate to this method.

Parameters

• [inout] record: Record used to save outputs and retrieve positions.

• [in] exposure: Image to be measured.

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.

Private Members

Control _ctrl

FluxResultKey _instFluxResultKey

FlagHandler _flagHandler

SafeCentroidExtractor _centroidExtractor

class ScaledApertureFluxControl

Public Functions

lsst::meas::base::ScaledApertureFluxControl::LSST_CONTROL_FIELD(shiftKernel, std::string, "Warping kernel used to shift Sinc photometry coefficients to different center positions")

lsst::meas::base::ScaledApertureFluxControl::LSST_CONTROL_FIELD(scale, double, "Scaling factor of PSF FWHM for aperture radius.")

ScaledApertureFluxControl()

class ScaledApertureFluxTransform : public lsst::meas::base::FluxTransform

Public Types

typedef ScaledApertureFluxControl Control

Public Functions

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