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LSST Data Management Base Package
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CoaddPsf is the Psf derived to be used for non-PSF-matched Coadd images. More...
#include <CoaddPsf.h>
Classes | |
class | Factory |
Public Types | |
enum | ImageOwnerEnum { COPY = 0 , INTERNAL = 1 } |
Enum passed to computeImage and computeKernelImage to determine image ownership. More... | |
using | Pixel = math::Kernel::Pixel |
Pixel type of Image returned by computeImage. | |
using | Image = image::Image<Pixel> |
Image type returned by computeImage. | |
Public Member Functions | |
CoaddPsf (afw::table::ExposureCatalog const &catalog, afw::geom::SkyWcs const &coaddWcs, std::string const &weightFieldName="weight", std::string const &warpingKernelName="lanczos3", int cacheSize=10000) | |
Main constructors for CoaddPsf. | |
CoaddPsf (afw::table::ExposureCatalog const &catalog, afw::geom::SkyWcs const &coaddWcs, CoaddPsfControl const &ctrl, std::string const &weightFieldName="weight") | |
Constructor for CoaddPsf. | |
CoaddPsf (afw::table::ExposureCatalog const &catalog, afw::geom::SkyWcs const &coaddWcs, geom::Point2D const &averagePosition, std::string const &warpingKernelName="lanczos3", int cacheSize=10000) | |
std::shared_ptr< afw::detection::Psf > | clone () const override |
Polymorphic deep copy. Usually unnecessary, as Psfs are immutable. | |
std::shared_ptr< afw::detection::Psf > | resized (int width, int height) const override |
Return a clone with specified kernel dimensions. | |
geom::Point2D | getAveragePosition () const override |
Return the average of the positions of the stars that went into this Psf. | |
afw::geom::SkyWcs | getCoaddWcs () |
Return the Wcs of the coadd (defines the coordinate system of the Psf). | |
int | getComponentCount () const |
Return the number of component Psfs in this CoaddPsf. | |
std::shared_ptr< afw::detection::Psf const > | getPsf (int index) |
Get the Psf of the component image at index. | |
afw::geom::SkyWcs | getWcs (int index) |
Get the Wcs of the component image at index. | |
double | getWeight (int index) |
Get the weight of the component image at index. | |
afw::table::RecordId | getId (int index) |
Get the exposure ID of the component image at index. | |
geom::Box2I | getBBox (int index) |
Get the bounding box (in component image Pixel coordinates) of the component image at index. | |
std::shared_ptr< afw::geom::polygon::Polygon const > | getValidPolygon (int index) |
Get the validPolygon (in component image Pixel coordinates) of the component image at index. | |
bool | isPersistable () const noexcept override |
Return true if the CoaddPsf persistable (always true). | |
std::shared_ptr< typehandling::Storable > | cloneStorable () const override |
Polymorphic deep-copy. | |
std::shared_ptr< Image > | computeImage (lsst::geom::Point2D position, image::Color color=image::Color(), ImageOwnerEnum owner=COPY) const |
Return an Image of the PSF, in a form that can be compared directly with star images. | |
std::shared_ptr< Image > | computeKernelImage (lsst::geom::Point2D position, image::Color color=image::Color(), ImageOwnerEnum owner=COPY) const |
Return an Image of the PSF, in a form suitable for convolution. | |
double | computePeak (lsst::geom::Point2D position, image::Color color=image::Color()) const |
Return the peak value of the PSF image. | |
double | computeApertureFlux (double radius, lsst::geom::Point2D position, image::Color color=image::Color()) const |
Compute the "flux" of the Psf model within a circular aperture of the given radius. | |
geom::ellipses::Quadrupole | computeShape (lsst::geom::Point2D position, image::Color color=image::Color()) const |
Compute the ellipse corresponding to the second moments of the Psf. | |
std::shared_ptr< math::Kernel const > | getLocalKernel (lsst::geom::Point2D position, image::Color color=image::Color()) const |
Return a FixedKernel corresponding to the Psf image at the given point. | |
image::Color | getAverageColor () const |
Return the average Color of the stars used to construct the Psf. | |
lsst::geom::Box2I | computeBBox (lsst::geom::Point2D position, image::Color color=image::Color()) const |
Return the bounding box of the image returned by computeKernelImage() | |
lsst::geom::Box2I | computeImageBBox (lsst::geom::Point2D position, image::Color color=image::Color()) const |
Return the bounding box of the image returned by computeImage() | |
lsst::geom::Box2I | computeKernelBBox (lsst::geom::Point2D position, image::Color color=image::Color()) const |
Return the bounding box of the image returned by computeImage() | |
std::size_t | getCacheCapacity () const |
Return the capacity of the caches. | |
void | setCacheCapacity (std::size_t capacity) |
Set the capacity of the caches. | |
virtual std::string | toString () const |
Create a string representation of this object (optional operation). | |
virtual std::size_t | hash_value () const |
Return a hash of this object (optional operation). | |
virtual bool | equals (Storable const &other) const noexcept |
Compare this object to another Storable. | |
void | writeFits (std::string const &fileName, std::string const &mode="w") const |
Write the object to a regular FITS file. | |
void | writeFits (fits::MemFileManager &manager, std::string const &mode="w") const |
Write the object to a FITS image in memory. | |
void | writeFits (fits::Fits &fitsfile) const |
Write the object to an already-open FITS object. | |
Static Public Member Functions | |
static std::shared_ptr< CoaddPsf > | readFits (fits::Fits &fitsfile) |
Read an object from an already open FITS object. | |
static std::shared_ptr< CoaddPsf > | readFits (std::string const &fileName, int hdu=fits::DEFAULT_HDU) |
Read an object from a regular FITS file. | |
static std::shared_ptr< CoaddPsf > | readFits (fits::MemFileManager &manager, int hdu=fits::DEFAULT_HDU) |
Read an object from a FITS file in memory. | |
static std::shared_ptr< CoaddPsf > | dynamicCast (std::shared_ptr< Persistable > const &ptr) |
Dynamically cast a shared_ptr. | |
static std::shared_ptr< ImagePsf > | readFits (fits::Fits &fitsfile) |
Read an object from an already open FITS object. | |
static std::shared_ptr< ImagePsf > | readFits (std::string const &fileName, int hdu=fits::DEFAULT_HDU) |
Read an object from a regular FITS file. | |
static std::shared_ptr< ImagePsf > | readFits (fits::MemFileManager &manager, int hdu=fits::DEFAULT_HDU) |
Read an object from a FITS file in memory. | |
static std::shared_ptr< Psf > | readFits (fits::Fits &fitsfile) |
Read an object from an already open FITS object. | |
static std::shared_ptr< Psf > | readFits (std::string const &fileName, int hdu=fits::DEFAULT_HDU) |
Read an object from a regular FITS file. | |
static std::shared_ptr< Psf > | readFits (fits::MemFileManager &manager, int hdu=fits::DEFAULT_HDU) |
Read an object from a FITS file in memory. | |
static std::shared_ptr< ImagePsf > | dynamicCast (std::shared_ptr< Persistable > const &ptr) |
Dynamically cast a shared_ptr. | |
static std::shared_ptr< Psf > | dynamicCast (std::shared_ptr< Persistable > const &ptr) |
Dynamically cast a shared_ptr. | |
static std::shared_ptr< Image > | recenterKernelImage (std::shared_ptr< Image > im, lsst::geom::Point2D const &position, std::string const &warpAlgorithm="lanczos5", unsigned int warpBuffer=5) |
Helper function for Psf::doComputeImage(): converts a kernel image (centered at (0,0) when xy0 is taken into account) to an image centered at position when xy0 is taken into account. | |
Protected Types | |
using | OutputArchiveHandle = io::OutputArchiveHandle |
Protected Member Functions | |
std::shared_ptr< afw::detection::Psf::Image > | doComputeKernelImage (geom::Point2D const &ccdXY, afw::image::Color const &color) const override |
These virtual member functions are private, not protected, because we only want derived classes to implement them, not call them; they should call the corresponding compute*Image member functions instead so as to let the Psf base class handle caching properly. | |
geom::Box2I | doComputeBBox (geom::Point2D const &position, afw::image::Color const &color) const override |
std::string | getPersistenceName () const override |
Return the unique name used to persist this object and look up its factory. | |
std::string | getPythonModule () const override |
Return the fully-qualified Python module that should be imported to guarantee that its factory is registered. | |
void | write (OutputArchiveHandle &handle) const override |
Write the object to one or more catalogs. | |
virtual double | doComputeApertureFlux (double radius, geom::Point2D const &position, afw::image::Color const &color) const |
virtual afw::geom::ellipses::Quadrupole | doComputeShape (geom::Point2D const &position, afw::image::Color const &color) const |
virtual std::shared_ptr< Image > | doComputeImage (lsst::geom::Point2D const &position, image::Color const &color) const |
These virtual members are protected (rather than private) so that python-implemented derived classes may opt to use the default implementations. | |
virtual lsst::geom::Box2I | doComputeImageBBox (lsst::geom::Point2D const &position, image::Color const &color) const |
Static Protected Member Functions | |
template<class T > | |
static bool | singleClassEquals (T const &lhs, Storable const &rhs) |
Test if a Storable is of a particular class and equal to another object. | |
Related Symbols | |
(Note that these are not member symbols.) | |
std::ostream & | operator<< (std::ostream &os, Storable const &storable) |
Output operator for Storable. | |
CoaddPsf is the Psf derived to be used for non-PSF-matched Coadd images.
It incorporates the logic of James Jee's Stackfit algorithm for estimating the Psf of coadd by coadding the images of the Psf models of each input exposure.
Definition at line 58 of file CoaddPsf.h.
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inherited |
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protectedinherited |
Definition at line 108 of file Persistable.h.
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inherited |
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inherited |
Enum passed to computeImage and computeKernelImage to determine image ownership.
Enumerator | |
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COPY | The image will be copied before returning; caller will own it. |
INTERNAL | An internal image will be returned without copying. The caller must not modify it, and it may be invalidated the next time a Psf member function is called with different color and/or position. |
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explicit |
Main constructors for CoaddPsf.
The ExposureCatalog contains info about each visit/ccd in Coadd; this must be provided to the constructor, and cannot be changed.
[in] | catalog | ExposureCatalog containing the id, bbox, wcs, psf and weight for each ccd/visit. This is usually the same catalog as the "ccds" catalog in the coadd Exposure's CoaddInputs. |
[in] | coaddWcs | Wcs for the coadd. |
[in] | weightFieldName | Field name that contains the weight of the exposure in the coadd; defaults to "weight". |
[in] | warpingKernelName | Name of warping kernel |
[in] | cacheSize | Warping kernel cache size |
Definition at line 142 of file CoaddPsf.cc.
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inline |
Constructor for CoaddPsf.
The ExposureCatalog contains info about each visit/ccd in Coadd; this must be provided to the constructor, and cannot be changed.
[in] | catalog | ExposureCatalog containing the id, bbox, wcs, psf and weight for each ccd/visit. This is usually the same catalog as the "ccds" catalog in the coadd Exposure's CoaddInputs. |
[in] | coaddWcs | Wcs for the coadd. |
[in] | ctrl | Configuration options. |
[in] | weightFieldName | Field name that contains the weight of the exposure in the coadd; defaults to "weight". |
Definition at line 93 of file CoaddPsf.h.
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explicit |
catalog | Unpersisted catalog |
coaddWcs | WCS for the coadd |
averagePosition | Default position for accessors |
warpingKernelName | Warping kernel name |
cacheSize | Kernel cache size |
Definition at line 171 of file CoaddPsf.cc.
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overridevirtual |
Polymorphic deep copy. Usually unnecessary, as Psfs are immutable.
Implements lsst::afw::detection::Psf.
Definition at line 180 of file CoaddPsf.cc.
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inlineoverridevirtualinherited |
Polymorphic deep copy. Usually unnecessary, as Psfs are immutable.
This method is an alias of clone that can be called from a reference to Storable.
Reimplemented from lsst::afw::typehandling::Storable.
Definition at line 122 of file Psf.h.
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inherited |
Compute the "flux" of the Psf model within a circular aperture of the given radius.
[in] | radius | Radius of the aperture to measure. |
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
The flux is relative to a Psf image that has been normalized to unit integral, and the radius is in pixels.
Definition at line 165 of file Psf.cc.
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inherited |
Return the bounding box of the image returned by computeKernelImage()
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
Definition at line 127 of file Psf.cc.
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inherited |
Return an Image of the PSF, in a form that can be compared directly with star images.
The specified position is a floating point number, and the resulting image will have a Psf centered on that point when the returned image's xy0 is taken into account.
The returned image is normalized to sum to unity.
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
[in] | owner | Whether to copy the return value or return an internal image that must be handled with care (see ImageOwnerEnum). |
The Psf class caches the most recent return value of computeImage, so repeated calls with the same arguments will be highly optimized.
Definition at line 101 of file Psf.cc.
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inherited |
Return the bounding box of the image returned by computeImage()
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
Definition at line 138 of file Psf.cc.
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inlineinherited |
Return the bounding box of the image returned by computeImage()
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). Alias for computeBBox |
Definition at line 282 of file Psf.h.
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inherited |
Return an Image of the PSF, in a form suitable for convolution.
While the position need not be an integer, the center of the PSF image returned by computeKernelImage will in the center of the center pixel of the image, which will be (0,0) when the Image's xy0 is taken into account; this is the same behavior as Kernel::computeImage().
The returned image is normalized to sum to unity.
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
[in] | owner | Whether to copy the return value or return an internal image that must be handled with care (see ImageOwnerEnum). |
The Psf class caches the most recent return value of computeKernelImage, so repeated calls with the same arguments will be highly optimized.
Definition at line 114 of file Psf.cc.
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inherited |
Return the peak value of the PSF image.
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
This calls computeKernelImage internally, but because this will usually be cached, it shouldn't be expensive (but be careful not to accidentally call it with no arguments when you actually want to call it with the same arguments just used to call computeImage or computeKernelImage).
Definition at line 158 of file Psf.cc.
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inherited |
Compute the ellipse corresponding to the second moments of the Psf.
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
The algorithm used to compute the moments is up to the derived class, and hence this method should not be used when a particular algorithm or weight function is required.
Definition at line 171 of file Psf.cc.
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protectedvirtualinherited |
Implements lsst::afw::detection::Psf.
Definition at line 45 of file ImagePsf.cc.
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overrideprotectedvirtual |
Implements lsst::afw::detection::Psf.
Definition at line 229 of file CoaddPsf.cc.
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protectedvirtualinherited |
These virtual members are protected (rather than private) so that python-implemented derived classes may opt to use the default implementations.
C++ derived classes may override these methods, but should not call them. Derived classes should call the corresponding compute* member functions instead so as to let the Psf base class handle caching properly.
Derived classes are responsible for ensuring that returned images sum to one.
Reimplemented in lsst::meas::extensions::psfex::PsfexPsf.
Definition at line 177 of file Psf.cc.
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protectedvirtualinherited |
Definition at line 183 of file Psf.cc.
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overrideprotectedvirtual |
These virtual member functions are private, not protected, because we only want derived classes to implement them, not call them; they should call the corresponding compute*Image member functions instead so as to let the Psf base class handle caching properly.
Derived classes are responsible for ensuring that returned images sum to one.
Implements lsst::afw::detection::Psf.
Definition at line 251 of file CoaddPsf.cc.
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protectedvirtualinherited |
Implements lsst::afw::detection::Psf.
Definition at line 65 of file ImagePsf.cc.
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staticinherited |
Dynamically cast a shared_ptr.
Dynamically cast a shared pointer and raise on failure.
You must provide an explicit template instantiation in the .cc file for each class that inherits from PersistableFacade. Designed to work around RTTI issues on macOS with hidden symbols;
lsst::pex::exceptions::LogicError | if the cast fails |
param[in] ptr The pointer to be cast.
lsst::pex::exceptions::TypeError | If the dynamic cast fails. |
Definition at line 218 of file Persistable.cc.
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staticinherited |
Dynamically cast a shared_ptr.
Dynamically cast a shared pointer and raise on failure.
You must provide an explicit template instantiation in the .cc file for each class that inherits from PersistableFacade. Designed to work around RTTI issues on macOS with hidden symbols;
lsst::pex::exceptions::LogicError | if the cast fails |
param[in] ptr The pointer to be cast.
lsst::pex::exceptions::TypeError | If the dynamic cast fails. |
Definition at line 218 of file Persistable.cc.
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staticinherited |
Dynamically cast a shared_ptr.
Dynamically cast a shared pointer and raise on failure.
You must provide an explicit template instantiation in the .cc file for each class that inherits from PersistableFacade. Designed to work around RTTI issues on macOS with hidden symbols;
lsst::pex::exceptions::LogicError | if the cast fails |
param[in] ptr The pointer to be cast.
lsst::pex::exceptions::TypeError | If the dynamic cast fails. |
Definition at line 218 of file Persistable.cc.
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virtualnoexceptinherited |
Compare this object to another Storable.
Subclasses that implement equality comparison must override this method to give results consistent with operator==
for all inputs that are accepted by both.
false
. If cross-class comparisons are valid, implementers should take care that they are symmetric and will give the same result no matter what the compile-time types of the left- and right-hand sides are.__eq__
if it exists. Reimplemented in lsst::afw::typehandling::StorableHelper< Base >, lsst::afw::geom::polygon::Polygon, lsst::afw::geom::SkyWcs, lsst::afw::image::PhotoCalib, and lsst::afw::image::VisitInfo.
Definition at line 48 of file Storable.cc.
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inlineinherited |
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inlineoverridevirtual |
Return the average of the positions of the stars that went into this Psf.
For CoaddPsf, this is calculated as the weighted average of the average positions of all the component Psfs.
Reimplemented from lsst::afw::detection::Psf.
Definition at line 115 of file CoaddPsf.h.
geom::Box2I lsst::meas::algorithms::CoaddPsf::getBBox | ( | int | index | ) |
Get the bounding box (in component image Pixel coordinates) of the component image at index.
[in] | index | Index of component for which the bounding box will be fetched. |
RangeError | Index of component is out of range. |
Definition at line 333 of file CoaddPsf.cc.
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inherited |
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inline |
Return the Wcs of the coadd (defines the coordinate system of the Psf).
Definition at line 118 of file CoaddPsf.h.
int lsst::meas::algorithms::CoaddPsf::getComponentCount | ( | ) | const |
Return the number of component Psfs in this CoaddPsf.
Definition at line 296 of file CoaddPsf.cc.
afw::table::RecordId lsst::meas::algorithms::CoaddPsf::getId | ( | int | index | ) |
Get the exposure ID of the component image at index.
[in] | index | Index of component for which the exposure ID will be fetched. |
RangeError | Index of component is out of range. |
Definition at line 326 of file CoaddPsf.cc.
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inherited |
Return a FixedKernel corresponding to the Psf image at the given point.
[in] | position | Position at which to evaluate the PSF. |
[in] | color | Color of the source for which to evaluate the PSF; defaults to getAverageColor(). |
This is implemented by calling computeKernelImage, and is simply provided for convenience.
Definition at line 149 of file Psf.cc.
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overrideprotectedvirtual |
Return the unique name used to persist this object and look up its factory.
Must be less than ArchiveIndexSchema::MAX_NAME_LENGTH characters.
Reimplemented from lsst::afw::table::io::Persistable.
Definition at line 430 of file CoaddPsf.cc.
std::shared_ptr< afw::detection::Psf const > lsst::meas::algorithms::CoaddPsf::getPsf | ( | int | index | ) |
Get the Psf of the component image at index.
[in] | index | Index of component for which the Psf will be fetched. |
RangeError | Index of component is out of range. |
Definition at line 298 of file CoaddPsf.cc.
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overrideprotectedvirtual |
Return the fully-qualified Python module that should be imported to guarantee that its factory is registered.
Must be less than ArchiveIndexSchema::MAX_MODULE_LENGTH characters.
Will be ignored if empty.
Reimplemented from lsst::afw::table::io::Persistable.
Definition at line 432 of file CoaddPsf.cc.
std::shared_ptr< afw::geom::polygon::Polygon const > lsst::meas::algorithms::CoaddPsf::getValidPolygon | ( | int | index | ) |
Get the validPolygon (in component image Pixel coordinates) of the component image at index.
[in] | index | Index of component for which the bounding box will be fetched. |
RangeError | Index of component is out of range. |
Definition at line 312 of file CoaddPsf.cc.
afw::geom::SkyWcs lsst::meas::algorithms::CoaddPsf::getWcs | ( | int | index | ) |
Get the Wcs of the component image at index.
[in] | index | Index of component for which the Wcs will be fetched. |
RangeError | Index of component is out of range. |
Definition at line 305 of file CoaddPsf.cc.
double lsst::meas::algorithms::CoaddPsf::getWeight | ( | int | index | ) |
Get the weight of the component image at index.
[in] | index | Index of component for which the weight will be fetched. |
RangeError | Index of component is out of range. |
Definition at line 319 of file CoaddPsf.cc.
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virtualinherited |
Return a hash of this object (optional operation).
UnsupportedOperationException | Thrown if this object is not hashable. |
__hash__
if it exists. Reimplemented in lsst::afw::geom::polygon::Polygon, lsst::afw::image::FilterLabel, lsst::afw::image::VisitInfo, and lsst::afw::typehandling::StorableHelper< Base >.
Definition at line 44 of file Storable.cc.
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inlineoverridevirtualnoexcept |
Return true if the CoaddPsf persistable (always true).
While it's actually possible to construct a CoaddPsf that isn't persistable (because its nested Psfs and Wcss are not persistable) in artificial situations, in realistic situations it's pretty much impossible, because persistence is a necessary part of how CoaddPsfs are built. And it's simpler and much faster if we just always return true, rather than loop over the elements and check each one.
Reimplemented from lsst::afw::table::io::Persistable.
Definition at line 186 of file CoaddPsf.h.
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inlinestaticinherited |
Read an object from an already open FITS object.
[in] | fitsfile | FITS object to read from, already positioned at the desired HDU. |
Definition at line 183 of file Persistable.h.
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inlinestaticinherited |
Read an object from an already open FITS object.
[in] | fitsfile | FITS object to read from, already positioned at the desired HDU. |
Definition at line 183 of file Persistable.h.
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inlinestaticinherited |
Read an object from an already open FITS object.
[in] | fitsfile | FITS object to read from, already positioned at the desired HDU. |
Definition at line 183 of file Persistable.h.
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inlinestaticinherited |
Read an object from a FITS file in memory.
[in] | manager | Manager for the memory to read from. |
[in] | hdu | HDU to read, where 0 is the primary. The special value of afw::fits::DEFAULT_HDU skips the primary HDU if it is empty. |
Definition at line 205 of file Persistable.h.
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inlinestaticinherited |
Read an object from a FITS file in memory.
[in] | manager | Manager for the memory to read from. |
[in] | hdu | HDU to read, where 0 is the primary. The special value of afw::fits::DEFAULT_HDU skips the primary HDU if it is empty. |
Definition at line 205 of file Persistable.h.
|
inlinestaticinherited |
Read an object from a FITS file in memory.
[in] | manager | Manager for the memory to read from. |
[in] | hdu | HDU to read, where 0 is the primary. The special value of afw::fits::DEFAULT_HDU skips the primary HDU if it is empty. |
Definition at line 205 of file Persistable.h.
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inlinestaticinherited |
Read an object from a regular FITS file.
[in] | fileName | Name of the file to read. |
[in] | hdu | HDU to read, where 0 is the primary. The special value of afw::fits::DEFAULT_HDU skips the primary HDU if it is empty. |
Definition at line 194 of file Persistable.h.
|
inlinestaticinherited |
Read an object from a regular FITS file.
[in] | fileName | Name of the file to read. |
[in] | hdu | HDU to read, where 0 is the primary. The special value of afw::fits::DEFAULT_HDU skips the primary HDU if it is empty. |
Definition at line 194 of file Persistable.h.
|
inlinestaticinherited |
Read an object from a regular FITS file.
[in] | fileName | Name of the file to read. |
[in] | hdu | HDU to read, where 0 is the primary. The special value of afw::fits::DEFAULT_HDU skips the primary HDU if it is empty. |
Definition at line 194 of file Persistable.h.
|
staticinherited |
Helper function for Psf::doComputeImage(): converts a kernel image (centered at (0,0) when xy0 is taken into account) to an image centered at position when xy0 is taken into account.
warpAlgorithm
is passed to afw::math::makeWarpingKernel() and can be "nearest", "bilinear", or "lanczosN"
warpBuffer
zero-pads the image before recentering. Recommended value is 1 for bilinear, N for lanczosN (note that it would be cleaner to infer this value from the warping algorithm but this would require mild API changes; same issue occurs in e.g. afw::math::offsetImage()).
The point with integer coordinates (0,0)
in the source image (with xy0 taken into account) corresponds to the point position
in the destination image. If position
is not integer-valued then we will need to fractionally shift the image using interpolation.
Note: if fractional recentering is performed, then a new image will be allocated and returned. If not, then the original image will be returned (after setting XY0).
Definition at line 85 of file Psf.cc.
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overridevirtual |
Return a clone with specified kernel dimensions.
Implements lsst::afw::detection::Psf.
Definition at line 182 of file CoaddPsf.cc.
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inherited |
|
inlinestaticprotectedinherited |
Test if a Storable is of a particular class and equal to another object.
This method template simplifies implementations of equals that delegate to operator==
without supporting cross-class comparisons.
T | The class expected of the two objects to be compared. |
lhs,rhs | The objects to compare. Note that rhs need not be a T , while lhs must be. |
true
if rhs
is a T
and lhs == rhs
; false
otherwise.operator==
. Most implementations of operator==
do not throw.operator==
with both arguments of compile-time type T const&
. Its use is not recommended if there would be any ambiguity as to which operator==
gets picked by overload resolution.This method template is typically called from equals as:
bool MyType::equals(Storable const& other) const noexcept { return singleClassEquals(*this, other); }
Definition at line 151 of file Storable.h.
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virtualinherited |
Create a string representation of this object (optional operation).
UnsupportedOperationException | Thrown if this object does not have a string representation. |
__repr__
. Reimplemented in lsst::afw::geom::polygon::Polygon, lsst::afw::geom::SkyWcs, lsst::afw::image::FilterLabel, lsst::afw::image::PhotoCalib, lsst::afw::image::VisitInfo, and lsst::afw::typehandling::StorableHelper< Base >.
Definition at line 40 of file Storable.cc.
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overrideprotectedvirtual |
Write the object to one or more catalogs.
The handle object passed to this function provides an interface for adding new catalogs and adding nested objects to the same archive (while checking for duplicates). See OutputArchiveHandle for more information.
Reimplemented from lsst::afw::table::io::Persistable.
Definition at line 434 of file CoaddPsf.cc.
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inherited |
Write the object to an already-open FITS object.
[in] | fitsfile | Open FITS object to write to. |
Definition at line 18 of file Persistable.cc.
|
inherited |
Write the object to a FITS image in memory.
[in] | manager | Name of the file to write to. |
[in] | mode | If "w", any existing file with the given name will be overwritten. If "a", new HDUs will be appended to an existing file. |
Definition at line 29 of file Persistable.cc.
|
inherited |
Write the object to a regular FITS file.
[in] | fileName | Name of the file to write to. |
[in] | mode | If "w", any existing file with the given name will be overwritten. If "a", new HDUs will be appended to an existing file. |
Definition at line 24 of file Persistable.cc.
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related |
Output operator for Storable.
os | the desired output stream |
storable | the object to print |
os
UnsupportedOperationException | Thrown if storable does not have an implementation of Storable::toString. |
Definition at line 174 of file Storable.h.