lsst::meas::base::SdssShapeTransform Class Reference

#include <SdssShape.h>

Inheritance diagram for lsst::meas::base::SdssShapeTransform:

Public Types
typedef SdssShapeControl	Control

Public Member Functions
	SdssShapeTransform (Control const &ctrl, std::string const &name, afw::table::SchemaMapper &mapper)
virtual void	operator() (afw::table::SourceCatalog const &inputCatalog, afw::table::BaseCatalog &outputCatalog, afw::image::Wcs const &wcs, afw::image::Calib const &calib) const
Public Member Functions inherited from lsst::meas::base::BaseTransform
	BaseTransform (std::string const &name)
virtual	~BaseTransform ()

Private Attributes
FluxTransform	_fluxTransform
CentroidTransform	_centroidTransform
ShapeResultKey	_outShapeKey

Additional Inherited Members
Protected Member Functions inherited from lsst::meas::base::BaseTransform
void	checkCatalogSize (afw::table::BaseCatalog const &cat1, afw::table::BaseCatalog const &cat2) const
	Ensure that catalogs have the same size. More...
Protected Attributes inherited from lsst::meas::base::BaseTransform
std::string	_name

Detailed Description

Transformation for SdssShape measurements.

SdssShape measures not just shape but also flux and centroid. This transform operates on the first directly, and delegates to the Flux and Centroid transforms for the other two.

Definition at line 235 of file SdssShape.h.

Member Typedef Documentation

typedef SdssShapeControl lsst::meas::base::SdssShapeTransform::Control

Definition at line 237 of file SdssShape.h.

Constructor & Destructor Documentation

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

Definition at line 904 of file SdssShape.cc.

  :
    BaseTransform{name},
    _fluxTransform{name, mapper},
    _centroidTransform{name, mapper}
{
    for (auto flag = flagDefs.begin() + 1; flag < flagDefs.end(); flag++) {
        mapper.addMapping(mapper.getInputSchema().find<afw::table::Flag>(
                          mapper.getInputSchema().join(name, flag->name)).key);
    }

    _outShapeKey = ShapeResultKey::addFields(mapper.editOutputSchema(), name, "Shape in celestial moments",
                                             FULL_COVARIANCE, afw::table::CoordinateType::CELESTIAL);
}

Member Function Documentation

void lsst::meas::base::SdssShapeTransform::operator() ( afw::table::SourceCatalog const &  inputCatalog, afw::table::BaseCatalog &  outputCatalog, afw::image::Wcs const &  wcs, afw::image::Calib const &  calib  ) const

virtual

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

Definition at line 922 of file SdssShape.cc.

        {
    // The flux and cetroid transforms will check that the catalog lengths
    // match and throw if not, so we don't repeat the test here.
    _fluxTransform(inputCatalog, outputCatalog, wcs, calib);
    _centroidTransform(inputCatalog, outputCatalog, wcs, calib);

    CentroidResultKey centroidKey(inputCatalog.getSchema()[_name]);
    ShapeResultKey inShapeKey(inputCatalog.getSchema()[_name]);

    afw::table::SourceCatalog::const_iterator inSrc = inputCatalog.begin();
    afw::table::BaseCatalog::iterator outSrc = outputCatalog.begin();
    for (; inSrc != inputCatalog.end(); ++inSrc, ++outSrc) {
        ShapeResult inShape = inShapeKey.get(*inSrc);
        ShapeResult outShape;

        // The transformation from the (x, y) to the (Ra, Dec) basis.
        afw::geom::AffineTransform crdTr = wcs.linearizePixelToSky(centroidKey.get(*inSrc).getCentroid(),
                                                                   afw::geom::radians);
        outShape.setShape(inShape.getShape().transform(crdTr.getLinear()));

        // Transformation matrix from pixel to celestial basis.
        ShapeTrMatrix m = makeShapeTransformMatrix(crdTr.getLinear());
        outShape.setShapeErr((m*inShape.getShapeErr().cast<double>()*m.transpose()).cast<ErrElement>());

        _outShapeKey.set(*outSrc, outShape);
    }
}

Member Data Documentation

CentroidTransform lsst::meas::base::SdssShapeTransform::_centroidTransform

private

Definition at line 256 of file SdssShape.h.

FluxTransform lsst::meas::base::SdssShapeTransform::_fluxTransform

private

Definition at line 255 of file SdssShape.h.

ShapeResultKey lsst::meas::base::SdssShapeTransform::_outShapeKey

private

Definition at line 257 of file SdssShape.h.

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

• /home/lsstsw/stack/Linux64/meas_base/11.0+1/include/lsst/meas/base/SdssShape.h
• /home/lsstsw/stack/Linux64/meas_base/11.0+1/src/SdssShape.cc