52 LOG_LOGGER _log =
LOG_GET(
"jointcal.Associations");
61 lsst::afw::geom::Box2I
const &bbox,
std::string const &filter,
65 auto ccdImage = std::make_shared<CcdImage>(catalog, wcs, visitInfo, bbox, filter, photoCalib, detector,
74 centers.
reserve(ccdImageList.size());
75 for (
auto const &
ccdImage : ccdImageList) {
78 auto commonTangentPoint = afw::geom::averageSpherePoint(centers);
79 LOGLS_DEBUG(_log,
"Using common tangent point: " << commonTangentPoint.getPosition(afw::geom::degrees));
80 setCommonTangentPoint(commonTangentPoint.getPosition(afw::geom::degrees));
84 _commonTangentPoint =
Point(commonTangentPoint.getX(), commonTangentPoint.getY());
85 for (
auto &
ccdImage : ccdImageList)
ccdImage->setCommonTangentPoint(_commonTangentPoint);
89 const bool enlargeFittedList) {
94 for (
auto &item : fittedStarList) {
95 item->clearBeforeAssoc();
98 if (!useFittedList) fittedStarList.clear();
100 for (
auto &
ccdImage : ccdImageList) {
111 Frame ccdImageFrameCPT = toCommonTangentPlane->apply(
ccdImage->getImageFrame(),
false);
112 ccdImageFrameCPT = ccdImageFrameCPT.
rescale(1.10);
117 for (
auto const &fittedStar : fittedStarList) {
118 if (ccdImageFrameCPT.
inFrame(*fittedStar)) {
125 toCommonTangentPlane.
get(), matchCutInArcSec / 3600.);
128 LOGLS_DEBUG(_log,
"Measured-to-Fitted matches before removing ambiguities " << starMatchList->size());
129 starMatchList->removeAmbiguities(*toCommonTangentPlane);
130 LOGLS_DEBUG(_log,
"Measured-to-Fitted matches after removing ambiguities " << starMatchList->size());
134 int matchedCount = 0;
135 for (
auto const &starMatch : *starMatchList) {
136 auto bs = starMatch.s1;
139 auto bs2 = starMatch.s2;
142 ms->setFittedStar(fs);
145 LOGLS_INFO(_log,
"Matched " << matchedCount <<
" objects in " <<
ccdImage->getName());
148 int unMatchedCount = 0;
149 for (
auto const &mstar : catalog) {
151 if (mstar->getFittedStar())
continue;
152 if (enlargeFittedList) {
153 auto fs = std::make_shared<FittedStar>(*mstar);
155 toCommonTangentPlane->transformPosAndErrors(*fs, *fs);
156 fittedStarList.push_back(fs);
157 mstar->setFittedStar(fs);
161 LOGLS_INFO(_log,
"Unmatched objects: " << unMatchedCount);
176 bool rejectBadFluxes) {
177 if (refCat.
size() == 0) {
179 " reference catalog is empty : stop here "));
190 << fluxField <<
"Err" 191 <<
") not found in reference catalog. Not using ref flux errors.");
194 _filterMap.reserve(refFluxMap.size());
196 for (
auto const &filter : refFluxMap) {
197 _filterMap[filter.first] = nFilters;
202 for (
size_t i = 0; i < refCat.
size(); i++) {
203 auto const &record = refCat.
get(i);
205 auto coord = record->get(coordKey);
206 double defaultFlux = record->get(fluxKey);
207 double defaultFluxErr;
208 if (fluxErrKey.isValid()) {
209 defaultFluxErr = record->get(fluxErrKey);
215 for (
auto const &filter : _filterMap) {
216 fluxList[filter.second] = refFluxMap.
at(filter.first).at(i);
217 fluxErrList[filter.second] = refFluxErrMap.
at(filter.first).at(i);
219 double ra = lsst::afw::geom::radToDeg(coord.getLongitude());
220 double dec = lsst::afw::geom::radToDeg(coord.getLatitude());
221 auto star = std::make_shared<RefStar>(ra, dec, defaultFlux, defaultFluxErr, fluxList, fluxErrList);
227 star->vx =
std::pow(0.1 / 3600 /
cos(coord.getLatitude()), 2);
232 if (rejectBadFluxes &&
235 refStarList.push_back(star);
240 TanRaDecToPixel raDecToCommonTangentPlane(identity, _commonTangentPoint);
242 associateRefStars(matchCut.asArcseconds(), &raDecToCommonTangentPlane);
247 Frame tangentPlaneFrame;
249 for (
auto const &
ccdImage : ccdImageList) {
251 if (tangentPlaneFrame.
getArea() == 0)
252 tangentPlaneFrame = CTPFrame;
254 tangentPlaneFrame += CTPFrame;
259 TanPixelToRaDec commonTangentPlaneToRaDec(identity, _commonTangentPoint);
260 Frame raDecFrame = commonTangentPlaneToRaDec.
apply(tangentPlaneFrame,
false);
262 lsst::afw::geom::Point<double>
min(raDecFrame.
xMin, raDecFrame.
yMin);
263 lsst::afw::geom::Point<double>
max(raDecFrame.
xMax, raDecFrame.
yMax);
264 lsst::afw::geom::Box2D box(min, max);
273 matchCutInArcSec / 3600.);
275 LOGLS_DEBUG(_log,
"Refcat matches before removing ambiguities " << starMatchList->size());
276 starMatchList->removeAmbiguities(*transform);
277 LOGLS_DEBUG(_log,
"Refcat matches after removing ambiguities " << starMatchList->size());
280 for (
auto const &starMatch : *starMatchList) {
284 const BaseStar &bs2 = *starMatch.s2;
292 "Associated " << starMatchList->size() <<
" reference stars among " << refStarList.size());
296 selectFittedStars(minMeasurements);
297 normalizeFittedStars();
300 void Associations::selectFittedStars(
int minMeasurements) {
301 LOGLS_INFO(_log,
"Fitted stars before measurement # cut: " << fittedStarList.size());
304 for (
auto const &
ccdImage : ccdImageList) {
312 if (fittedStar ==
nullptr) {
319 if (!fittedStar->getRefStar() && fittedStar->getMeasurementCount() < minMeasurements) {
320 fittedStar->getMeasurementCount()--;
321 mi = catalog.
erase(mi);
330 if ((*fi)->getMeasurementCount() == 0) {
331 fi = fittedStarList.erase(fi);
337 LOGLS_INFO(_log,
"Fitted stars after measurement # cut: " << fittedStarList.size());
340 void Associations::normalizeFittedStars()
const {
342 for (
auto &fittedStar : fittedStarList) {
345 fittedStar->setFlux(0.0);
346 fittedStar->getMag() = 0.0;
350 for (
auto const &
ccdImage : ccdImageList) {
353 for (
auto &mi : catalog) {
354 auto fittedStar = mi->getFittedStar();
355 if (fittedStar ==
nullptr)
358 "All measuredStars must have a fittedStar: did you call selectFittedStars()?"));
359 auto point = toCommonTangentPlane->apply(*mi);
360 fittedStar->x += point.x;
361 fittedStar->y += point.y;
362 fittedStar->getFlux() += mi->getFlux();
366 for (
auto &fi : fittedStarList) {
367 auto measurementCount = fi->getMeasurementCount();
368 fi->x /= measurementCount;
369 fi->y /= measurementCount;
370 fi->getFlux() /= measurementCount;
371 fi->getMag() = utils::nanojanskyToABMagnitude(fi->getFlux());
375 void Associations::assignMags() {
376 for (
auto const &
ccdImage : ccdImageList) {
378 for (
auto const &mstar : catalog) {
379 auto fstar = mstar->getFittedStar();
380 if (!fstar)
continue;
381 fstar->addMagMeasurement(mstar->getMag(), mstar->getMagWeight());
389 if (!fittedStarList.inTangentPlaneCoordinates) {
391 "DeprojectFittedStars: Fitted stars are already in sidereal coordinates, nothing done ");
396 fittedStarList.applyTransform(ctp2Sky);
397 fittedStarList.inTangentPlaneCoordinates =
false;
402 return item->getCatalogForFit().size() > 0;
408 for (
auto const &fittedStar : fittedStarList) {
409 if ((fittedStar !=
nullptr) & (fittedStar->getRefStar() !=
nullptr)) count++;
415 void Associations::collectMCStars(
int realization) {
419 for (I = ccdImageList.begin(); I != ccdImageList.end(); I++) {
421 string dbimdir = ccdImage.Dir();
422 string mctruth = dbimdir +
"/mc/mctruth.list";
424 if (realization >= 0) {
426 sstrm << dbimdir <<
"/mc/mctruth_" << realization <<
".list";
427 mctruth = sstrm.
str();
434 DicStarList mctruthlist(mctruth);
438 for (smI = starMatchList->begin(); smI != starMatchList->end(); smI++) {
443 DicStar *dstar =
dynamic_cast<DicStar *
>(bs);
445 mcstar->GetMCInfo().iflux = dstar->getval(
"iflux");
446 mcstar->GetMCInfo().tflux = dstar->getval(
"sflux");
453 LOGLS_FATAL(_log,
"CollectMCStars Unable to match MCTruth w/ catalog!");
458 double matchCutArcSec) {
460 size_t pos_minus = color.
find(
'-');
461 bool compute_diff = (pos_minus != string::npos);
463 c1 = color.
substr(0, pos_minus);
464 if (compute_diff) c2 = color.
substr(pos_minus + 1, string::npos);
465 DicStarList cList(dicStarListName);
466 if (!cList.HasKey(c1))
467 throw(GastroException(
"Associations::SetFittedstarColors : " + dicStarListName +
468 " misses a key named \"" + c1 +
"\""));
469 if (compute_diff && !cList.HasKey(c2))
470 throw(GastroException(
"Associations::SetFittedstarColors : " + dicStarListName +
471 " misses a key named \"" + c2 +
"\""));
479 if (fittedStarList.inTangentPlaneCoordinates) id_or_proj = &id;
484 id_or_proj, matchCutArcSec / 3600);
486 LOGLS_INFO(_log,
"Matched " << starMatchList->size() <<
'/' << fittedStarList.size()
487 <<
" FittedStars to color catalog");
489 for (
auto i = starMatchList->begin(); i != starMatchList->end(); ++i) {
493 const TStar *ts =
dynamic_cast<const TStar *
>(s2);
494 const DicStar *ds =
dynamic_cast<const DicStar *
>(ts->get_original());
495 fs->
color = ds->getval(c1);
496 if (compute_diff) fs->
color -= ds->getval(c2);
Objects used as position anchors, typically USNO stars.
The transformation that handles pixels to sideral transformations (Gnomonic, possibly with polynomial...
int nCcdImagesValidForFit() const
return the number of CcdImages with non-empty catalogs to-be-fit.
MeasuredStarList::iterator MeasuredStarIterator
A hanger for star associations.
void apply(const double xIn, const double yIn, double &xOut, double &yOut) const
Transform pixels to ICRS RA, Dec in degrees.
double xMin
coordinate of boundary.
std::unique_ptr< StarMatchList > listMatchCollect(const BaseStarList &list1, const BaseStarList &list2, const AstrometryTransform *guess, const double maxDist)
assembles star matches.
#define LOGLS_FATAL(logger, message)
void associateCatalogs(const double matchCutInArcsec=0, const bool useFittedList=false, const bool enlargeFittedList=true)
incrementaly builds a merged catalog of all image catalogs
A list of MeasuredStar. They are usually filled in Associations::createCcdImage.
Frame rescale(const double factor) const
rescale it. The center does not move.
#define LOGLS_INFO(logger, message)
The base class for handling stars. Used by all matching routines.
void prepareFittedStars(int minMeasurements)
Set the color field of FittedStar 's from a colored catalog.
size_t nFittedStarsWithAssociatedRefStar() const
Return the number of fittedStars that have an associated refStar.
void collectRefStars(afw::table::SimpleCatalog &refCat, afw::geom::Angle matchCut, std::string const &fluxField, RefFluxMapType const &refFluxMap=RefFluxMapType(), RefFluxMapType const &refFluxErrMap=RefFluxMapType(), bool rejectBadFluxes=false)
Collect stars from an external reference catalog and associate them with fittedStars.
rectangle with sides parallel to axes.
SchemaItem< T > find(std::string const &name) const
Class for a simple mapping implementing a generic AstrometryTransform.
void setRefStar(const RefStar *_refStar)
Set the astrometric reference star associated with this star.
void computeCommonTangentPoint()
Sets a shared tangent point for all ccdImages, using the mean of the centers of all ccdImages...
FittedStarList::iterator FittedStarIterator
A list of FittedStar s. Such a list is typically constructed by Associations.
This one is the Tangent Plane (called gnomonic) projection (from celestial sphere to tangent plane) ...
objects measured on actual images.
T dynamic_pointer_cast(T... args)
::std::list< StarMatch >::iterator StarMatchIterator
void deprojectFittedStars()
Sends back the fitted stars coordinates on the sky FittedStarsList::inTangentPlaneCoordinates keeps t...
void setCommonTangentPoint(lsst::afw::geom::Point2D const &commonTangentPoint)
Sets a shared tangent point for all ccdImages.
bool inFrame(double x, double y) const
inside?
#define LSST_EXCEPT(type,...)
void createCcdImage(afw::table::SourceCatalog &catalog, std::shared_ptr< lsst::afw::geom::SkyWcs > wcs, std::shared_ptr< lsst::afw::image::VisitInfo > visitInfo, lsst::afw::geom::Box2I const &bbox, std::string const &filter, std::shared_ptr< afw::image::PhotoCalib > photoCalib, std::shared_ptr< afw::cameraGeom::Detector > detector, int visit, int ccd, lsst::jointcal::JointcalControl const &control)
Create a ccdImage from an exposure catalog and metadata, and add it to the list.
MeasuredStarList const & getCatalogForFit() const
Gets the catalog to be used for fitting, which may have been cleaned-up.
Combinatorial searches for linear transformations to go from list1 to list2.
BaseStarList & Fitted2Base(FittedStarList &This)
std::shared_ptr< const BaseStar > s2
const lsst::afw::geom::Box2D getRaDecBBox()
BaseStarList & Measured2Base(MeasuredStarList &This)
#define LOGLS_DEBUG(logger, message)
std::shared_ptr< RecordT > const get(size_type i) const
std::shared_ptr< const BaseStar > s1
std::string sourceFluxField
"name of flux field in source catalog" ;
Handler of an actual image from a single CCD.
std::shared_ptr< FittedStar > getFittedStar() const
The objects which have been measured several times.
#define LOGLS_WARN(logger, message)
BaseStarList & Ref2Base(RefStarList &This)