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LSST Data Management Base Package
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PhotometryModel.cc
Go to the documentation of this file.
1// -*- LSST-C++ -*-
2/*
3 * This file is part of jointcal.
4 *
5 * Developed for the LSST Data Management System.
6 * This product includes software developed by the LSST Project
7 * (https://www.lsst.org).
8 * See the COPYRIGHT file at the top-level directory of this distribution
9 * for details of code ownership.
10 *
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <https://www.gnu.org/licenses/>.
23 */
24
25#include "lsst/log/Log.h"
26
29
30namespace lsst {
31namespace jointcal {
32
33bool PhotometryModel::validate(CcdImageList const &ccdImageList, int ndof) const {
34 bool check = true;
35 for (auto const &ccdImage : ccdImageList) {
36 // Don't short circuit so that we log every place the model is negative.
37 check &= checkPositiveOnBBox(*ccdImage);
38 }
39 if (ndof < 0) {
40 check &= false;
41 LOGLS_ERROR(_log, "This model only has "
42 << ndof << " degrees of freedom, with " << getTotalParameters()
43 << " total parameters. Reduce the model complexity (e.g. polynomial order)"
44 " to better match the number of measured sources.");
45 }
46 return check;
47}
48
50 bool check = true;
51 auto bbox = ccdImage.getImageFrame();
52 for (auto const &x : {bbox.xMin, bbox.getCenter().x, bbox.xMax})
53 for (auto const &y : {bbox.yMin, bbox.getCenter().y, bbox.yMax}) {
54 // flux, fluxErr, instFlux, instFluxErr all 1
56 star.setInstFluxAndErr(1, 1);
57 double result = transform(ccdImage, star);
58 // Don't short circuit so that we log every place the model is negative.
59 if (result < 0) {
60 LOGLS_WARN(_log, "CcdImage " << ccdImage.getName() << " is negative at (" << x << "," << y
61 << "): " << result);
62 check = false;
63 }
64 }
65 return check;
66}
67
68} // namespace jointcal
69} // namespace lsst
LSST DM logging module built on log4cxx.
#define LOGLS_WARN(logger, message)
Log a warn-level message using an iostream-based interface.
Definition Log.h:659
#define LOGLS_ERROR(logger, message)
Log a error-level message using an iostream-based interface.
Definition Log.h:679
The base class for handling stars. Used by all matching routines.
Definition BaseStar.h:51
Handler of an actual image from a single CCD.
Definition CcdImage.h:64
Frame const & getImageFrame() const
Frame in pixels.
Definition CcdImage.h:190
std::string getName() const
Return the _name that identifies this ccdImage.
Definition CcdImage.h:79
Sources measured on images.
void setInstFluxAndErr(double instFlux, double instFluxErr)
virtual std::size_t getTotalParameters() const =0
Return the total number of parameters in this model.
LOG_LOGGER _log
lsst.logging instance, to be created by a subclass so that messages have consistent name.
virtual double transform(CcdImage const &ccdImage, MeasuredStar const &measuredStar) const =0
Return the on-sky transformed flux for measuredStar on ccdImage.
bool validate(CcdImageList const &ccdImageList, int ndof) const
Return true if this is a "reasonable" model.
bool checkPositiveOnBBox(CcdImage const &ccdImage) const
Check that the model is positive on the ccdImage bbox.
std::list< std::shared_ptr< CcdImage > > CcdImageList
Definition CcdImage.h:46