lsst::jointcal::AstrometryMapping Class Reference

virtual class needed in the abstraction of the distortion model More...

#include <AstrometryMapping.h>

Inheritance diagram for lsst::jointcal::AstrometryMapping:

Public Member Functions
virtual std::size_t	getNpar () const =0
	Number of parameters in total. More...
virtual void	getMappingIndices (IndexVector &indices) const =0
	Sets how this set of parameters (of length Npar()) map into the "grand" fit Expects that indices has enough space reserved. More...
virtual void	computeTransformAndDerivatives (FatPoint const &where, FatPoint &outPoint, Eigen::MatrixX2d &H) const =0
	Actually applies the AstrometryMapping and evaluates the derivatives w.r.t the fitted parameters. More...
virtual void	transformPosAndErrors (FatPoint const &where, FatPoint &outPoint) const =0
	The same as above but without the parameter derivatives (used to evaluate chi^2) More...
virtual void	offsetParams (Eigen::VectorXd const &delta)=0
	Remember the error scale and freeze it. More...
virtual void	positionDerivative (Point const &where, Eigen::Matrix2d &derivative, double epsilon) const =0
	The derivative w.r.t. position. More...
virtual	~AstrometryMapping ()

Detailed Description

virtual class needed in the abstraction of the distortion model

Definition at line 38 of file AstrometryMapping.h.

Constructor & Destructor Documentation

~AstrometryMapping()

virtual lsst::jointcal::AstrometryMapping::~AstrometryMapping ( )

inlinevirtual

Definition at line 66 of file AstrometryMapping.h.

{};

Member Function Documentation

computeTransformAndDerivatives()

virtual void lsst::jointcal::AstrometryMapping::computeTransformAndDerivatives ( FatPoint const &  where, FatPoint &  outPoint, Eigen::MatrixX2d &  H  ) const

pure virtual

Actually applies the AstrometryMapping and evaluates the derivatives w.r.t the fitted parameters.

This is grouped into a single call because for most models, evaluating the derivatives w.r.T parameters is not much longer than just transforming

Implemented in lsst::jointcal::SimplePolyMapping, lsst::jointcal::SimpleAstrometryMapping, and lsst::jointcal::ChipVisitAstrometryMapping.

getMappingIndices()

virtual void lsst::jointcal::AstrometryMapping::getMappingIndices ( IndexVector &  indices ) const

pure virtual

Sets how this set of parameters (of length Npar()) map into the "grand" fit Expects that indices has enough space reserved.

Implemented in lsst::jointcal::SimpleAstrometryMapping, and lsst::jointcal::ChipVisitAstrometryMapping.

getNpar()

virtual std::size_t lsst::jointcal::AstrometryMapping::getNpar ( ) const

pure virtual

Number of parameters in total.

Implemented in lsst::jointcal::SimpleAstrometryMapping, and lsst::jointcal::ChipVisitAstrometryMapping.

offsetParams()

virtual void lsst::jointcal::AstrometryMapping::offsetParams ( Eigen::VectorXd const &  delta )

pure virtual

Remember the error scale and freeze it.

Implemented in lsst::jointcal::SimpleAstrometryMapping, and lsst::jointcal::ChipVisitAstrometryMapping.

positionDerivative()

virtual void lsst::jointcal::AstrometryMapping::positionDerivative ( Point const &  where, Eigen::Matrix2d &  derivative, double  epsilon  ) const

pure virtual

The derivative w.r.t. position.

Implemented in lsst::jointcal::SimplePolyMapping, lsst::jointcal::SimpleAstrometryMapping, and lsst::jointcal::ChipVisitAstrometryMapping.

transformPosAndErrors()

virtual void lsst::jointcal::AstrometryMapping::transformPosAndErrors ( FatPoint const &  where, FatPoint &  outPoint  ) const

pure virtual

The same as above but without the parameter derivatives (used to evaluate chi^2)

Implemented in lsst::jointcal::SimplePolyMapping, lsst::jointcal::SimpleAstrometryMapping, and lsst::jointcal::ChipVisitAstrometryMapping.

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

• /j/snowflake/release/lsstsw/stack/Linux64/jointcal/18.1.0/include/lsst/jointcal/AstrometryMapping.h