lsst.jointcal
16.0-23-gcb65559
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#include <Gtransfo.h>
Public Member Functions | |
BaseTanWcs (GtransfoLin const &pix2Tan, Point const &tangentPoint, const GtransfoPoly *corrections=nullptr) | |
BaseTanWcs (const BaseTanWcs &original) | |
void | operator= (const BaseTanWcs &original) |
void | apply (const double xIn, const double yIn, double &xOut, double &yOut) const |
Transform pixels to ICRS RA, Dec in degrees. More... | |
Point | getTangentPoint () const |
Get the sky origin (CRVAL in FITS WCS terminology) in degrees. More... | |
GtransfoLin | getLinPart () const |
The Linear part (corresponding to CD's and CRPIX's) More... | |
const GtransfoPoly * | getCorr () const |
Get a non-owning pointer to the correction transform polynomial. More... | |
void | setCorrections (std::unique_ptr< GtransfoPoly > corrections) |
Assign the correction polynomial (what it means is left to derived classes) More... | |
Point | getCrPix () const |
Get the pixel origin of the WCS (CRPIX in FITS WCS terminology, but zero-based) More... | |
virtual GtransfoPoly | getPix2TangentPlane () const =0 |
Get a transform from pixels to tangent plane (degrees) This is a linear transform plus the effects of the correction. More... | |
virtual void | pix2TP (double xPixel, double yPixel, double &xTangentPlane, double &yTangentPlane) const =0 |
Transform from pixels to tangent plane (degrees) More... | |
~BaseTanWcs () | |
void | apply (Point const &in, Point &out) const |
applies the tranfo to in and writes into out. Is indeed virtual. More... | |
Point | apply (Point const &in) const |
All these apply(..) shadow the virtual one in derived classes, unless one writes "using
Gtransfo::apply". More... | |
Frame | apply (Frame const &inputframe, bool inscribed) const |
Transform a bounding box, taking either the inscribed or circumscribed box. More... | |
virtual void | dump (std::ostream &stream=std::cout) const =0 |
dumps the transfo coefficients to stream. More... | |
std::string | __str__ () |
virtual double | fit (StarMatchList const &starMatchList)=0 |
fits a transfo to a std::list of Point pairs (p1,p2, the Point fields in StarMatch). More... | |
void | transformStar (FatPoint &in) const |
allows to write MyTransfo(MyStar) More... | |
virtual double | getJacobian (Point const &point) const |
returns the local jacobian. More... | |
virtual double | getJacobian (const double x, const double y) const |
returns the local jacobian. More... | |
virtual std::unique_ptr< Gtransfo > | clone () const =0 |
returns a copy (allocated by new) of the transformation. More... | |
virtual std::unique_ptr< Gtransfo > | composeAndReduce (Gtransfo const &right) const |
Return a reduced composition of newTransfo = this(right()), or nullptr if it cannot be reduced. More... | |
virtual void | computeDerivative (Point const &where, GtransfoLin &derivative, const double step=0.01) const |
Computes the local Derivative of a transfo, w.r.t. More... | |
virtual GtransfoLin | linearApproximation (Point const &where, const double step=0.01) const |
linear (local) approximation. More... | |
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)) More... | |
virtual std::unique_ptr< Gtransfo > | inverseTransfo (const double precision, const Frame ®ion) const |
returns an inverse transfo. Numerical if not overloaded. More... | |
void | getParams (double *params) const |
params should be at least Npar() long More... | |
void | offsetParams (Eigen::VectorXd const &delta) |
virtual double | paramRef (const int i) const |
virtual double & | paramRef (const int i) |
virtual void | paramDerivatives (Point const &where, double *dx, double *dy) const |
Derivative w.r.t parameters. More... | |
virtual std::unique_ptr< Gtransfo > | roughInverse (const Frame ®ion) const |
Rough inverse. More... | |
virtual int | getNpar () const |
returns the number of parameters (to compute chi2's) More... | |
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. More... | |
void | write (const std::string &fileName) const |
virtual void | write (std::ostream &stream) const |
Protected Attributes | |
GtransfoLin | linPix2Tan |
std::unique_ptr< GtransfoPoly > | corr |
double | ra0 |
double | dec0 |
double | cos0 |
double | sin0 |
Definition at line 551 of file Gtransfo.h.
lsst::jointcal::BaseTanWcs::BaseTanWcs | ( | GtransfoLin const & | pix2Tan, |
Point const & | tangentPoint, | ||
const GtransfoPoly * | corrections = nullptr |
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Definition at line 1320 of file Gtransfo.cc.
lsst::jointcal::BaseTanWcs::BaseTanWcs | ( | const BaseTanWcs & | original | ) |
Definition at line 1336 of file Gtransfo.cc.
lsst::jointcal::BaseTanWcs::~BaseTanWcs | ( | ) |
Definition at line 1395 of file Gtransfo.cc.
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inlineinherited |
Definition at line 94 of file Gtransfo.h.
applies the tranfo to in and writes into out. Is indeed virtual.
Definition at line 71 of file Gtransfo.h.
All these apply(..) shadow the virtual one in derived classes, unless one writes "using Gtransfo::apply".
Definition at line 75 of file Gtransfo.h.
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 74 of file Gtransfo.cc.
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virtual |
Transform pixels to ICRS RA, Dec in degrees.
Implements lsst::jointcal::Gtransfo.
Definition at line 1351 of file Gtransfo.cc.
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pure virtualinherited |
returns a copy (allocated by new) of the transformation.
Implemented in lsst::jointcal::UserTransfo, lsst::jointcal::TanRaDec2Pix, lsst::jointcal::TanSipPix2RaDec, lsst::jointcal::TanPix2RaDec, lsst::jointcal::GtransfoSkyWcs, lsst::jointcal::GtransfoLin, lsst::jointcal::GtransfoComposition, lsst::jointcal::GtransfoPoly, lsst::jointcal::GtransfoInverse, and lsst::jointcal::GtransfoIdentity.
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virtualinherited |
Return a reduced composition of newTransfo = 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. |
Reimplemented in lsst::jointcal::GtransfoIdentity.
Definition at line 92 of file Gtransfo.cc.
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virtualinherited |
Computes the local Derivative of a transfo, w.r.t.
the Derivative is represented by a GtransfoLin, 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::GtransfoLin, lsst::jointcal::GtransfoPoly, and lsst::jointcal::GtransfoIdentity.
Definition at line 116 of file Gtransfo.cc.
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pure virtualinherited |
dumps the transfo coefficients to stream.
Implemented in lsst::jointcal::UserTransfo, lsst::jointcal::TanRaDec2Pix, lsst::jointcal::TanSipPix2RaDec, lsst::jointcal::TanPix2RaDec, lsst::jointcal::GtransfoSkyWcs, lsst::jointcal::GtransfoComposition, lsst::jointcal::GtransfoPoly, lsst::jointcal::GtransfoInverse, and lsst::jointcal::GtransfoIdentity.
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pure virtualinherited |
fits a transfo to a std::list of Point pairs (p1,p2, the Point fields in StarMatch).
After the fit this(p1) yields approximately p2. The returned value is the sum of squared residuals. If you want to fit a partial transfo (e.g. such that this(T1(p1)) = T2(p2), use StarMatchList::applyTransfo beforehand.
Implemented in lsst::jointcal::UserTransfo, lsst::jointcal::TanRaDec2Pix, lsst::jointcal::TanSipPix2RaDec, lsst::jointcal::TanPix2RaDec, lsst::jointcal::GtransfoSkyWcs, lsst::jointcal::GtransfoLinRot, lsst::jointcal::GtransfoLinShift, lsst::jointcal::GtransfoComposition, lsst::jointcal::GtransfoPoly, lsst::jointcal::GtransfoInverse, and lsst::jointcal::GtransfoIdentity.
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inline |
Get a non-owning pointer to the correction transform polynomial.
Definition at line 572 of file Gtransfo.h.
Point lsst::jointcal::BaseTanWcs::getCrPix | ( | ) | const |
Get the pixel origin of the WCS (CRPIX in FITS WCS terminology, but zero-based)
Definition at line 1383 of file Gtransfo.cc.
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inlinevirtualinherited |
returns the local jacobian.
Definition at line 111 of file Gtransfo.h.
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virtualinherited |
returns the local jacobian.
Definition at line 97 of file Gtransfo.cc.
GtransfoLin lsst::jointcal::BaseTanWcs::getLinPart | ( | ) | const |
The Linear part (corresponding to CD's and CRPIX's)
Definition at line 1379 of file Gtransfo.cc.
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inlinevirtualinherited |
returns the number of parameters (to compute chi2's)
Reimplemented in lsst::jointcal::GtransfoLinScale, lsst::jointcal::GtransfoLinRot, lsst::jointcal::GtransfoLinShift, lsst::jointcal::GtransfoPoly, and lsst::jointcal::GtransfoIdentity.
Definition at line 180 of file Gtransfo.h.
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inherited |
params should be at least Npar() long
Definition at line 210 of file Gtransfo.cc.
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pure virtual |
Get a transform from pixels to tangent plane (degrees) This is a linear transform plus the effects of the correction.
Implemented in lsst::jointcal::TanSipPix2RaDec, and lsst::jointcal::TanPix2RaDec.
Point lsst::jointcal::BaseTanWcs::getTangentPoint | ( | ) | const |
Get the sky origin (CRVAL in FITS WCS terminology) in degrees.
Definition at line 1377 of file Gtransfo.cc.
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virtualinherited |
returns an inverse transfo. Numerical if not overloaded.
precision and region refer to the "input" side of this, and hence to the output side of the returned Gtransfo.
Reimplemented in lsst::jointcal::TanRaDec2Pix, lsst::jointcal::TanSipPix2RaDec, lsst::jointcal::TanPix2RaDec, lsst::jointcal::GtransfoLin, and lsst::jointcal::GtransfoInverse.
Definition at line 292 of file Gtransfo.cc.
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virtualinherited |
linear (local) approximation.
Reimplemented in lsst::jointcal::GtransfoLin, and lsst::jointcal::GtransfoIdentity.
Definition at line 133 of file Gtransfo.cc.
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inherited |
Definition at line 215 of file Gtransfo.cc.
void lsst::jointcal::BaseTanWcs::operator= | ( | const BaseTanWcs & | original | ) |
Definition at line 1341 of file Gtransfo.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::GtransfoPoly.
Definition at line 229 of file Gtransfo.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::GtransfoPoly.
Definition at line 220 of file Gtransfo.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::GtransfoPoly.
Definition at line 225 of file Gtransfo.cc.
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pure virtual |
Transform from pixels to tangent plane (degrees)
Implemented in lsst::jointcal::TanSipPix2RaDec, and lsst::jointcal::TanPix2RaDec.
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virtualinherited |
Rough inverse.
Stored by the numerical inverter to guess starting point for the trials. Just here to enable overloading.
Reimplemented in lsst::jointcal::TanRaDec2Pix, lsst::jointcal::TanPix2RaDec, and lsst::jointcal::GtransfoInverse.
Definition at line 190 of file Gtransfo.cc.
void lsst::jointcal::BaseTanWcs::setCorrections | ( | std::unique_ptr< GtransfoPoly > | corrections | ) |
Assign the correction polynomial (what it means is left to derived classes)
Definition at line 1381 of file Gtransfo.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 transfo, to help find an inverse. |
Reimplemented in lsst::jointcal::GtransfoPoly, and lsst::jointcal::GtransfoIdentity.
Definition at line 189 of file Gtransfo.h.
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virtualinherited |
transform errors (represented as double[3] in order V(xx),V(yy),Cov(xy))
Definition at line 157 of file Gtransfo.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::TanRaDec2Pix, and lsst::jointcal::GtransfoPoly.
Definition at line 140 of file Gtransfo.cc.
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inlineinherited |
allows to write MyTransfo(MyStar)
Definition at line 108 of file Gtransfo.h.
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inherited |
Definition at line 239 of file Gtransfo.cc.
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virtualinherited |
Reimplemented in lsst::jointcal::GtransfoPoly, and lsst::jointcal::GtransfoIdentity.
Definition at line 249 of file Gtransfo.cc.
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protected |
Definition at line 592 of file Gtransfo.h.
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protected |
Definition at line 594 of file Gtransfo.h.
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protected |
Definition at line 593 of file Gtransfo.h.
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protected |
Definition at line 590 of file Gtransfo.h.
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protected |
Definition at line 593 of file Gtransfo.h.
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protected |
Definition at line 594 of file Gtransfo.h.