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LSST Data Management Base Package
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The transformation that handles pixels to sideral transformations (Gnomonic, possibly with polynomial distortions). More...
#include <AstrometryTransform.h>
Public Member Functions | |
TanPixelToRaDec (AstrometryTransformLinear const &pixToTan, Point const &tangentPoint, const AstrometryTransformPolynomial *corrections=nullptr) | |
pixToTan describes the transform from pix to tangent plane (degrees). | |
AstrometryTransformPolynomial | getPixelToTangentPlane () const |
the transformation from pixels to tangent plane (degrees) | |
virtual void | pixToTangentPlane (double xPixel, double yPixel, double &xTangentPlane, double &yTangentPlane) const |
transforms from pixel space to tangent plane (degrees) | |
TanPixelToRaDec () | |
TanPixelToRaDec | operator* (AstrometryTransformLinear const &right) const |
composition with AstrometryTransformLinear | |
std::unique_ptr< AstrometryTransform > | composeAndReduce (AstrometryTransformLinear const &right) const |
Return a reduced composition of newTransform = this(right()), or nullptr if it cannot be reduced. | |
TanRaDecToPixel | inverted () const |
approximate inverse : it ignores corrections; | |
std::unique_ptr< AstrometryTransform > | roughInverse (const Frame ®ion) const |
Overload the "generic routine" (available for all AstrometryTransform types. | |
std::unique_ptr< AstrometryTransform > | inverseTransform (double precision, const Frame ®ion) const |
Inverse transform: returns a TanRaDecToPixel if there are no corrections, or the iterative solver if there are. | |
std::unique_ptr< AstrometryTransform > | clone () const |
returns a copy (allocated by new) of the transformation. | |
void | print (std::ostream &out) const |
prints the transform coefficients to stream. | |
double | fit (StarMatchList const &starMatchList) |
Not implemented yet, because we do it otherwise. | |
virtual void | apply (double xIn, double yIn, double &xOut, double &yOut) const=0 |
Transform pixels to ICRS RA, Dec in degrees. | |
void | apply (Point const &in, Point &out) const |
applies the tranfo to in and writes into out. Is indeed virtual. | |
Point | apply (Point const &in) const |
All these apply(..) shadow the virtual one in derived classes, unless one writes "using
AstrometryTransform::apply". | |
Frame | apply (Frame const &inputframe, bool inscribed) const |
Transform a bounding box, taking either the inscribed or circumscribed box. | |
virtual std::unique_ptr< AstrometryTransform > | composeAndReduce (AstrometryTransform const &right) const |
Return a reduced composition of newTransform = this(right()), or nullptr if it cannot be reduced. | |
Point | getTangentPoint () const |
Get the sky origin (CRVAL in FITS WCS terminology) in degrees. | |
AstrometryTransformLinear | getLinPart () const |
The Linear part (corresponding to CD's and CRPIX's) | |
const AstrometryTransformPolynomial * | getCorr () const |
Get a non-owning pointer to the correction transform polynomial. | |
void | setCorrections (std::unique_ptr< AstrometryTransformPolynomial > corrections) |
Assign the correction polynomial (what it means is left to derived classes) | |
Point | getCrPix () const |
Get the pixel origin of the WCS (CRPIX in FITS WCS terminology, but zero-based) | |
std::string | __str__ () const |
void | transformStar (FatPoint &in) const |
virtual double | getJacobian (Point const &point) const |
returns the local jacobian. | |
virtual double | getJacobian (double x, double y) const |
returns the local jacobian. | |
virtual void | computeDerivative (Point const &where, AstrometryTransformLinear &derivative, double step=0.01) const |
Computes the local Derivative of a transform, w.r.t. | |
virtual AstrometryTransformLinear | linearApproximation (Point const &where, double step=0.01) const |
linear (local) approximation. | |
virtual void | transformPosAndErrors (const FatPoint &in, FatPoint &out) const |
virtual void | transformErrors (Point const &where, const double *vIn, double *vOut) const |
transform errors (represented as double[3] in order V(xx),V(yy),Cov(xy)) | |
void | getParams (double *params) const |
params should be at least Npar() long | |
void | offsetParams (Eigen::VectorXd const &delta) |
virtual double | paramRef (Eigen::Index i) const |
virtual double & | paramRef (Eigen::Index i) |
virtual void | paramDerivatives (Point const &where, double *dx, double *dy) const |
Derivative w.r.t parameters. | |
virtual std::size_t | getNpar () const |
returns the number of parameters (to compute chi2's) | |
virtual std::shared_ptr< ast::Mapping > | toAstMap (jointcal::Frame const &domain) const |
Create an equivalent AST mapping for this transformation, including an analytic inverse if possible. | |
void | write (const std::string &fileName) const |
virtual void | write (std::ostream &stream) const |
Protected Attributes | |
AstrometryTransformLinear | linPixelToTan |
std::unique_ptr< AstrometryTransformPolynomial > | corr |
double | ra0 {} |
double | dec0 {} |
double | cos0 {} |
double | sin0 {} |
The transformation that handles pixels to sideral transformations (Gnomonic, possibly with polynomial distortions).
Definition at line 627 of file AstrometryTransform.h.
lsst::jointcal::TanPixelToRaDec::TanPixelToRaDec | ( | AstrometryTransformLinear const & | pixToTan, |
Point const & | tangentPoint, | ||
const AstrometryTransformPolynomial * | corrections = nullptr ) |
pixToTan describes the transform from pix to tangent plane (degrees).
TangentPoint in degrees. Corrections are applied between Lin and deprojection parts (as in Swarp).
Definition at line 1497 of file AstrometryTransform.cc.
lsst::jointcal::TanPixelToRaDec::TanPixelToRaDec | ( | ) |
Definition at line 1502 of file AstrometryTransform.cc.
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inlineinherited |
Definition at line 94 of file AstrometryTransform.h.
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virtual |
Transform pixels to ICRS RA, Dec in degrees.
Reimplemented from lsst::jointcal::BaseTanWcs.
Transform a bounding box, taking either the inscribed or circumscribed box.
[in] | inputframe | The frame to be transformed. |
[in] | inscribed | Return the inscribed (true) or circumscribed (false) box. |
Definition at line 89 of file AstrometryTransform.cc.
All these apply(..) shadow the virtual one in derived classes, unless one writes "using AstrometryTransform::apply".
Definition at line 75 of file AstrometryTransform.h.
applies the tranfo to in and writes into out. Is indeed virtual.
Definition at line 71 of file AstrometryTransform.h.
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virtual |
returns a copy (allocated by new) of the transformation.
Implements lsst::jointcal::AstrometryTransform.
Definition at line 1559 of file AstrometryTransform.cc.
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Return a reduced composition of newTransform = this(right()), or nullptr if it cannot be reduced.
"Reduced" in this context means that they are capable of being merged into a single transform, for example, for two polynomials:
\[ f(x) = 1 + x^2, g(x) = -1 + 3x \]
we would have h = f.composeAndReduce(g) == 2 - 6x + 9x^2
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To be overloaded by derived classes if they can properly reduce the composition.
right | The transform to apply first. |
Reimplemented from lsst::jointcal::AstrometryTransform.
Definition at line 131 of file AstrometryTransform.cc.
std::unique_ptr< AstrometryTransform > lsst::jointcal::TanPixelToRaDec::composeAndReduce | ( | AstrometryTransformLinear const & | right | ) | const |
Return a reduced composition of newTransform = this(right()), or nullptr if it cannot be reduced.
"Reduced" in this context means that they are capable of being merged into a single transform, for example, for two polynomials:
\[ f(x) = 1 + x^2, g(x) = -1 + 3x \]
we would have h = f.composeAndReduce(g) == 2 - 6x + 9x^2
.
To be overloaded by derived classes if they can properly reduce the composition.
right | The transform to apply first. |
Definition at line 1504 of file AstrometryTransform.cc.
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virtualinherited |
Computes the local Derivative of a transform, w.r.t.
the Derivative is represented by a AstrometryTransformLinear, in which (hopefully), the offset terms are zero.
position.
Step is used for numerical derivation.
Derivative should transform a vector of offsets into a vector of offsets.
Reimplemented in lsst::jointcal::AstrometryTransformIdentity, lsst::jointcal::AstrometryTransformPolynomial, and lsst::jointcal::AstrometryTransformLinear.
Definition at line 119 of file AstrometryTransform.cc.
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virtual |
Not implemented yet, because we do it otherwise.
Implements lsst::jointcal::AstrometryTransform.
Definition at line 1573 of file AstrometryTransform.cc.
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inlineinherited |
Get a non-owning pointer to the correction transform polynomial.
Definition at line 595 of file AstrometryTransform.h.
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inherited |
Get the pixel origin of the WCS (CRPIX in FITS WCS terminology, but zero-based)
Definition at line 1460 of file AstrometryTransform.cc.
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virtualinherited |
returns the local jacobian.
Definition at line 100 of file AstrometryTransform.cc.
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inlinevirtualinherited |
returns the local jacobian.
Definition at line 110 of file AstrometryTransform.h.
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inherited |
The Linear part (corresponding to CD's and CRPIX's)
Definition at line 1454 of file AstrometryTransform.cc.
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inlinevirtualinherited |
returns the number of parameters (to compute chi2's)
Reimplemented in lsst::jointcal::AstrometryTransformLinearShift, lsst::jointcal::AstrometryTransformLinearRot, lsst::jointcal::AstrometryTransformLinearScale, lsst::jointcal::AstrometryTransformIdentity, and lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 180 of file AstrometryTransform.h.
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inherited |
params should be at least Npar() long
Definition at line 217 of file AstrometryTransform.cc.
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virtual |
the transformation from pixels to tangent plane (degrees)
Implements lsst::jointcal::BaseTanWcs.
Definition at line 1541 of file AstrometryTransform.cc.
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inherited |
Get the sky origin (CRVAL in FITS WCS terminology) in degrees.
Definition at line 1452 of file AstrometryTransform.cc.
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virtual |
Inverse transform: returns a TanRaDecToPixel if there are no corrections, or the iterative solver if there are.
Reimplemented from lsst::jointcal::AstrometryTransform.
Definition at line 1532 of file AstrometryTransform.cc.
TanRaDecToPixel lsst::jointcal::TanPixelToRaDec::inverted | ( | ) | const |
approximate inverse : it ignores corrections;
Definition at line 1519 of file AstrometryTransform.cc.
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virtualinherited |
linear (local) approximation.
Reimplemented in lsst::jointcal::AstrometryTransformIdentity, and lsst::jointcal::AstrometryTransformLinear.
Definition at line 137 of file AstrometryTransform.cc.
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inherited |
Definition at line 222 of file AstrometryTransform.cc.
TanPixelToRaDec lsst::jointcal::TanPixelToRaDec::operator* | ( | AstrometryTransformLinear const & | right | ) | const |
composition with AstrometryTransformLinear
Definition at line 1513 of file AstrometryTransform.cc.
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virtualinherited |
Derivative w.r.t parameters.
Derivatives should be al least 2*NPar long. first Npar, for x, last Npar for y.
Reimplemented in lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 237 of file AstrometryTransform.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 232 of file AstrometryTransform.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 227 of file AstrometryTransform.cc.
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virtual |
transforms from pixel space to tangent plane (degrees)
Implements lsst::jointcal::BaseTanWcs.
Definition at line 1548 of file AstrometryTransform.cc.
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virtual |
prints the transform coefficients to stream.
Implements lsst::jointcal::AstrometryTransform.
Definition at line 1564 of file AstrometryTransform.cc.
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virtual |
Overload the "generic routine" (available for all AstrometryTransform types.
Reimplemented from lsst::jointcal::AstrometryTransform.
Definition at line 1527 of file AstrometryTransform.cc.
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inherited |
Assign the correction polynomial (what it means is left to derived classes)
Definition at line 1456 of file AstrometryTransform.cc.
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inlinevirtualinherited |
Create an equivalent AST mapping for this transformation, including an analytic inverse if possible.
domain | The domain of the transform, to help find an inverse. |
Reimplemented in lsst::jointcal::AstrometryTransformIdentity, and lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 189 of file AstrometryTransform.h.
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virtualinherited |
transform errors (represented as double[3] in order V(xx),V(yy),Cov(xy))
Definition at line 163 of file AstrometryTransform.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::TanRaDecToPixel, and lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 146 of file AstrometryTransform.cc.
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inlineinherited |
Definition at line 107 of file AstrometryTransform.h.
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inherited |
Definition at line 247 of file AstrometryTransform.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::AstrometryTransformIdentity, and lsst::jointcal::AstrometryTransformPolynomial.
Definition at line 257 of file AstrometryTransform.cc.
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protectedinherited |
Definition at line 616 of file AstrometryTransform.h.
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protectedinherited |
Definition at line 618 of file AstrometryTransform.h.
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protectedinherited |
Definition at line 617 of file AstrometryTransform.h.
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protectedinherited |
Definition at line 614 of file AstrometryTransform.h.
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protectedinherited |
Definition at line 617 of file AstrometryTransform.h.
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protectedinherited |
Definition at line 618 of file AstrometryTransform.h.