lsst::meas::algorithms::MinimizeChi2< PixelT > Class Template Reference

Inheritance diagram for lsst::meas::algorithms::MinimizeChi2< PixelT >:

Public Member Functions
	MinimizeChi2 (evalChi2Visitor< PixelT > &chi2Visitor, afwMath::Kernel *kernel, afwMath::SpatialCellSet const &psfCells, int nStarPerCell, int nComponents, int nSpatialParams)
double	Up () const
double	operator() (const std::vector< double > &coeffs) const
void	setErrorDef (double def)

Private Attributes
double	_errorDef
evalChi2Visitor< PixelT > &	_chi2Visitor
afwMath::Kernel *	_kernel
afwMath::SpatialCellSet const &	_psfCells
int	_nStarPerCell
int	_nComponents
int	_nSpatialParams

Detailed Description

template<typename PixelT>
class lsst::meas::algorithms::MinimizeChi2< PixelT >

Definition at line 570 of file SpatialModelPsf.cc.

Constructor & Destructor Documentation

template<typename PixelT>

lsst::meas::algorithms::MinimizeChi2< PixelT >::MinimizeChi2 ( evalChi2Visitor< PixelT > &  chi2Visitor, afwMath::Kernel *  kernel, afwMath::SpatialCellSet const &  psfCells, int  nStarPerCell, int  nComponents, int  nSpatialParams  )

inlineexplicit

Definition at line 572 of file SpatialModelPsf.cc.

                           : _errorDef(1.0),
                             _chi2Visitor(chi2Visitor),
                             _kernel(kernel),
                             _psfCells(psfCells),
                             _nStarPerCell(nStarPerCell),
                             _nComponents(nComponents),
                             _nSpatialParams(nSpatialParams) {}

Member Function Documentation

template<typename PixelT>

double lsst::meas::algorithms::MinimizeChi2< PixelT >::operator() ( const std::vector< double > &  coeffs ) const

inline

Definition at line 595 of file SpatialModelPsf.cc.

                                                             {
        setSpatialParameters(_kernel, coeffs);
        
        _psfCells.visitCandidates(&_chi2Visitor, _nStarPerCell);
        
        return _chi2Visitor.getValue();
    }

template<typename PixelT>

void lsst::meas::algorithms::MinimizeChi2< PixelT >::setErrorDef ( double  def )

inline

Definition at line 603 of file SpatialModelPsf.cc.

{ _errorDef = def; }

template<typename PixelT>

double lsst::meas::algorithms::MinimizeChi2< PixelT >::Up ( ) const

inline

Error definition of the function. MINUIT defines Parameter errors as the change in Parameter Value required to change the function Value by up. Normally, for chisquared fits it is 1, and for negative log likelihood, its Value is 0.5. If the user wants instead the 2-sigma errors for chisquared fits, it becomes 4,

Definition at line 592 of file SpatialModelPsf.cc.

{ return _errorDef; }

Member Data Documentation

template<typename PixelT>

evalChi2Visitor<PixelT>& lsst::meas::algorithms::MinimizeChi2< PixelT >::_chi2Visitor

private

Definition at line 607 of file SpatialModelPsf.cc.

template<typename PixelT>

double lsst::meas::algorithms::MinimizeChi2< PixelT >::_errorDef

private

Definition at line 605 of file SpatialModelPsf.cc.

template<typename PixelT>

afwMath::Kernel* lsst::meas::algorithms::MinimizeChi2< PixelT >::_kernel

private

Definition at line 608 of file SpatialModelPsf.cc.

template<typename PixelT>

int lsst::meas::algorithms::MinimizeChi2< PixelT >::_nComponents

private

Definition at line 611 of file SpatialModelPsf.cc.

template<typename PixelT>

int lsst::meas::algorithms::MinimizeChi2< PixelT >::_nSpatialParams

private

Definition at line 612 of file SpatialModelPsf.cc.

template<typename PixelT>

int lsst::meas::algorithms::MinimizeChi2< PixelT >::_nStarPerCell

private

Definition at line 610 of file SpatialModelPsf.cc.

template<typename PixelT>

afwMath::SpatialCellSet const& lsst::meas::algorithms::MinimizeChi2< PixelT >::_psfCells

private

Definition at line 609 of file SpatialModelPsf.cc.

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

• /home/lsstsw/stack/Linux64/meas_algorithms/11.0-2-gb8b8ce7/src/SpatialModelPsf.cc