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LSST Data Management Base Package
scaledPolynomialTransformFitter.cc
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1/*
2 * LSST Data Management System
3 *
4 * This product includes software developed by the
5 * LSST Project (http://www.lsst.org/).
6 * See the COPYRIGHT file
7 *
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the LSST License Statement and
19 * the GNU General Public License along with this program. If not,
20 * see <https://www.lsstcorp.org/LegalNotices/>.
21 */
22#include "pybind11/pybind11.h"
23#include "pybind11/stl.h"
24
25#include <vector>
26
27#include "lsst/pex/config/python.h" // defines LSST_DECLARE_CONTROL_FIELD
30
31namespace py = pybind11;
32using namespace pybind11::literals;
33
34namespace lsst {
35namespace meas {
36namespace astrom {
37namespace {
38
39static void declareOutlierRejectionControl(py::module& mod) {
40 py::class_<OutlierRejectionControl> cls(mod, "OutlierRejectionControl");
41
42 cls.def(py::init<>());
43
44 LSST_DECLARE_CONTROL_FIELD(cls, OutlierRejectionControl, nSigma);
45 LSST_DECLARE_CONTROL_FIELD(cls, OutlierRejectionControl, nClipMin);
46 LSST_DECLARE_CONTROL_FIELD(cls, OutlierRejectionControl, nClipMax);
47}
48
49static void declareScaledPolynomialTransformFitter(py::module& mod) {
50 py::class_<ScaledPolynomialTransformFitter> cls(mod, "ScaledPolynomialTransformFitter");
51
52 cls.def_static("fromMatches", &ScaledPolynomialTransformFitter::fromMatches);
53 cls.def_static("fromGrid", &ScaledPolynomialTransformFitter::fromGrid);
54 cls.def("fit", &ScaledPolynomialTransformFitter::fit, "order"_a = -1);
55 cls.def("updateModel", &ScaledPolynomialTransformFitter::updateModel);
56 cls.def("updateIntrinsicScatter", &ScaledPolynomialTransformFitter::updateIntrinsicScatter);
57 cls.def("getIntrinsicScatter", &ScaledPolynomialTransformFitter::getIntrinsicScatter);
58 cls.def("rejectOutliers", &ScaledPolynomialTransformFitter::rejectOutliers, "ctrl"_a);
60 py::return_value_policy::reference_internal);
61 cls.def("getTransform", &ScaledPolynomialTransformFitter::getTransform, py::return_value_policy::copy);
62 cls.def("getPoly", &ScaledPolynomialTransformFitter::getPoly, py::return_value_policy::copy);
63 cls.def("getInputScaling", &ScaledPolynomialTransformFitter::getInputScaling,
64 py::return_value_policy::copy);
65 cls.def("getOutputScaling", &ScaledPolynomialTransformFitter::getOutputScaling,
66 py::return_value_policy::copy);
67}
68
69} // namespace
70
71PYBIND11_MODULE(scaledPolynomialTransformFitter, mod) {
72 declareOutlierRejectionControl(mod);
73 declareScaledPolynomialTransformFitter(mod);
74}
75
76} // namespace astrom
77} // namespace meas
78} // namespace lsst
static ScaledPolynomialTransformFitter fromMatches(int maxOrder, afw::table::ReferenceMatchVector const &matches, afw::geom::SkyWcs const &initialWcs, double intrinsicScatter)
Initialize a fit from intermediate world coordinates to pixels using source/reference matches.
PolynomialTransform const & getPoly() const
Return the polynomial part of the best-fit transform.
std::pair< double, size_t > rejectOutliers(OutlierRejectionControl const &ctrl)
Mark outliers in the data catalog using sigma clipping.
geom::AffineTransform const & getOutputScaling() const
Return the output scaling transform that maps output data points to [-1, 1].
double getIntrinsicScatter() const
Return the current estimate of the intrinsic scatter.
void updateModel()
Update the 'model' field in the data catalog using the current best- fit transform.
geom::AffineTransform const & getInputScaling() const
Return the input scaling transform that maps input data points to [-1, 1].
void fit(int order=-1)
Perform a linear least-squares fit of the polynomial coefficients.
afw::table::BaseCatalog const & getData() const
Return a catalog of data points and model values for diagnostic purposes.
double updateIntrinsicScatter()
Infer the intrinsic scatter in the offset between the data points and the best-fit model,...
ScaledPolynomialTransform const & getTransform() const
Return the best-fit transform.
static ScaledPolynomialTransformFitter fromGrid(int maxOrder, geom::Box2D const &bbox, int nGridX, int nGridY, ScaledPolynomialTransform const &toInvert)
Initialize a fit that inverts an existing transform by evaluating and fitting to points on a grid.
PYBIND11_MODULE(makeMatchStatistics, mod)
A base class for image defects.
#define LSST_DECLARE_CONTROL_FIELD(WRAPPER, CLASS, NAME)
Macro used to wrap fields declared by LSST_CONTROL_FIELD using Pybind11.
Definition: python.h:50