LSST Applications
21.0.0-172-gfb10e10a+18fedfabac,22.0.0+297cba6710,22.0.0+80564b0ff1,22.0.0+8d77f4f51a,22.0.0+a28f4c53b1,22.0.0+dcf3732eb2,22.0.1-1-g7d6de66+2a20fdde0d,22.0.1-1-g8e32f31+297cba6710,22.0.1-1-geca5380+7fa3b7d9b6,22.0.1-12-g44dc1dc+2a20fdde0d,22.0.1-15-g6a90155+515f58c32b,22.0.1-16-g9282f48+790f5f2caa,22.0.1-2-g92698f7+dcf3732eb2,22.0.1-2-ga9b0f51+7fa3b7d9b6,22.0.1-2-gd1925c9+bf4f0e694f,22.0.1-24-g1ad7a390+a9625a72a8,22.0.1-25-g5bf6245+3ad8ecd50b,22.0.1-25-gb120d7b+8b5510f75f,22.0.1-27-g97737f7+2a20fdde0d,22.0.1-32-gf62ce7b1+aa4237961e,22.0.1-4-g0b3f228+2a20fdde0d,22.0.1-4-g243d05b+871c1b8305,22.0.1-4-g3a563be+32dcf1063f,22.0.1-4-g44f2e3d+9e4ab0f4fa,22.0.1-42-gca6935d93+ba5e5ca3eb,22.0.1-5-g15c806e+85460ae5f3,22.0.1-5-g58711c4+611d128589,22.0.1-5-g75bb458+99c117b92f,22.0.1-6-g1c63a23+7fa3b7d9b6,22.0.1-6-g50866e6+84ff5a128b,22.0.1-6-g8d3140d+720564cf76,22.0.1-6-gd805d02+cc5644f571,22.0.1-8-ge5750ce+85460ae5f3,master-g6e05de7fdc+babf819c66,master-g99da0e417a+8d77f4f51a,w.2021.48
LSST Data Management Base Package
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A reusable struct for moments-based shape measurements. More...
#include <ShapeUtilities.h>
Public Member Functions | |
ShapeResult () | |
Constructor; initializes everything to NaN. More... | |
ShapeResult (ShapeElement xx_, ShapeElement yy_, ShapeElement xy_, ShapeCov const &matrix) | |
Constructor; initializes everything from values. More... | |
ShapeResult (ShapeElement xx_, ShapeElement yy_, ShapeElement xy_, ErrElement xxErr_, ErrElement yyErr_, ErrElement xyErr_) | |
Constructor; initializes everything from values. More... | |
Shape const | getShape () const |
Return an afw::geom::ellipses object corresponding to xx, yy, xy. More... | |
afw::geom::ellipses::Quadrupole | getQuadrupole () |
void | setShape (Shape const &shape) |
Set struct elements from the given Quadrupole object. More... | |
ShapeCov const | getShapeErr () const |
Return the 3x3 symmetric covariance matrix, with rows and columns ordered (xx, yy, xy) More... | |
void | setShapeErr (ShapeCov const &matrix) |
Set the struct standard deviation elements from the given matrix, with rows and columns ordered (xx, yy, xy) More... | |
void | setShapeErr (ErrElement xxErr, ErrElement yyErr, ErrElement xyErr) |
Set the struct standard deviation elements from the given values. More... | |
Public Attributes | |
ShapeElement | xx |
image or model second moment for x^2 More... | |
ShapeElement | yy |
image or model second moment for y^2 More... | |
ShapeElement | xy |
image or model second moment for xy^2 More... | |
ErrElement | xxErr |
standard deviation of xx More... | |
ErrElement | yyErr |
standard deviation of yy More... | |
ErrElement | xyErr |
standard deviation of xy More... | |
ErrElement | xx_yy_Cov |
xx,yy term in the uncertainty convariance matrix More... | |
ErrElement | xx_xy_Cov |
xx,xy term in the uncertainty convariance matrix More... | |
ErrElement | yy_xy_Cov |
yy,xy term in the uncertainty convariance matrix More... | |
A reusable struct for moments-based shape measurements.
Shape measurements and their errors should always be in pixels coordinates. This struct should generally be preferred over a custom struct with other ellipse parametrizations unless the measurement takes place in another parametrization and a transformation to this one would result in a loss of information or obfuscate the results of the measurement (i.e. use this one unless you have a good reason not to).
Definition at line 43 of file ShapeUtilities.h.
lsst::meas::base::ShapeResult::ShapeResult | ( | ) |
Constructor; initializes everything to NaN.
Definition at line 30 of file ShapeUtilities.cc.
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inlineexplicit |
Constructor; initializes everything from values.
Definition at line 58 of file ShapeUtilities.h.
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inlineexplicit |
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inline |
Definition at line 91 of file ShapeUtilities.h.
Shape const lsst::meas::base::ShapeResult::getShape | ( | ) | const |
Return an afw::geom::ellipses object corresponding to xx, yy, xy.
This method can be used to return an average radius for the measured shape, e.g. getShape()
.getDeterminantRadius()
Definition at line 41 of file ShapeUtilities.cc.
ShapeCov const lsst::meas::base::ShapeResult::getShapeErr | ( | ) | const |
Return the 3x3 symmetric covariance matrix, with rows and columns ordered (xx, yy, xy)
Definition at line 49 of file ShapeUtilities.cc.
void lsst::meas::base::ShapeResult::setShape | ( | Shape const & | shape | ) |
Set struct elements from the given Quadrupole object.
Definition at line 43 of file ShapeUtilities.cc.
void lsst::meas::base::ShapeResult::setShapeErr | ( | ErrElement | xxErr, |
ErrElement | yyErr, | ||
ErrElement | xyErr | ||
) |
void lsst::meas::base::ShapeResult::setShapeErr | ( | ShapeCov const & | matrix | ) |
Set the struct standard deviation elements from the given matrix, with rows and columns ordered (xx, yy, xy)
Definition at line 56 of file ShapeUtilities.cc.
ShapeElement lsst::meas::base::ShapeResult::xx |
image or model second moment for x^2
Definition at line 44 of file ShapeUtilities.h.
ErrElement lsst::meas::base::ShapeResult::xx_xy_Cov |
xx,xy term in the uncertainty convariance matrix
Definition at line 51 of file ShapeUtilities.h.
ErrElement lsst::meas::base::ShapeResult::xx_yy_Cov |
xx,yy term in the uncertainty convariance matrix
Definition at line 50 of file ShapeUtilities.h.
ErrElement lsst::meas::base::ShapeResult::xxErr |
standard deviation of xx
Definition at line 47 of file ShapeUtilities.h.
ShapeElement lsst::meas::base::ShapeResult::xy |
image or model second moment for xy^2
Definition at line 46 of file ShapeUtilities.h.
ErrElement lsst::meas::base::ShapeResult::xyErr |
standard deviation of xy
Definition at line 49 of file ShapeUtilities.h.
ShapeElement lsst::meas::base::ShapeResult::yy |
image or model second moment for y^2
Definition at line 45 of file ShapeUtilities.h.
ErrElement lsst::meas::base::ShapeResult::yy_xy_Cov |
yy,xy term in the uncertainty convariance matrix
Definition at line 52 of file ShapeUtilities.h.
ErrElement lsst::meas::base::ShapeResult::yyErr |
standard deviation of yy
Definition at line 48 of file ShapeUtilities.h.