Class ChipVisitPhotometryMapping¶

Defined in File PhotometryMapping.h

Inheritance Relationships¶

Base Type¶

public lsst::jointcal::PhotometryMappingBase (Class PhotometryMappingBase)

Derived Types¶

public lsst::jointcal::ChipVisitFluxMapping (Class ChipVisitFluxMapping)
public lsst::jointcal::ChipVisitMagnitudeMapping (Class ChipVisitMagnitudeMapping)

Class Documentation¶

class ChipVisitPhotometryMapping : public lsst::jointcal::PhotometryMappingBase ¶

A two-level photometric transform: one for the ccd and one for the visit.

Subclassed by lsst::jointcal::ChipVisitFluxMapping, lsst::jointcal::ChipVisitMagnitudeMapping

Public Functions

ChipVisitPhotometryMapping(std::shared_ptr<PhotometryMapping> chipMapping, std::shared_ptr<PhotometryMapping> visitMapping)¶

std::size_t getNpar() const¶: Number of total parameters in this mapping.

double transform(MeasuredStar const &measuredStar, double value) const¶

Return the on-sky transformed flux for measuredStar on ccdImage.

Return

The on-sky value () transformed from value at measuredStar’s position.

Parameters

[in] measuredStar: The measured star position to transform.
[in] value: The instrument flux or magnitude to transform.

void freezeErrorTransform()¶

Once this routine has been called, the error transform is not modified by offsetParams().

The routine can be called when the mappings are roughly in place. After the call, the transformations used to propagate errors are no longer affected when updating the mappings. This allows an exactly linear fit, which can be necessary for some model+data combinations.

Eigen::VectorXd getParameters()¶

void getMappingIndices(IndexVector &indices) const¶: Gets how this set of parameters (of length getNpar()) map into the “grand” fit. Expects that indices has enough space reserved.

void setWhatToFit(bool const fittingChips, bool const fittingVisits)¶

Set whether to fit chips or visits.

This must be called before anything that depends on knowing the number of parameters in the fit, such as offsetParams(), getParameters(), or computeParameterDerivatives().