File MeasurementSelector.hpp¶
-
namespace Acts
Note
This file is foreseen for the
Geometry
module to replaceExtent
Note
this is foreseen for the ‘Geometry’ module
-
class MeasurementSelector
- #include <Acts/TrackFinding/MeasurementSelector.hpp>
Measurement selection struct selecting those measurements compatible with the given track parameter against provided criteria on one surface.
The selection criteria could be allowed maximum chi2 and allowed maximum number of measurements on one surface
If there is no compatible measurement, the measurement with the mininum chi2 will be selected and the status will be tagged as an outlier
Public Types
-
using Config = Acts::GeometryHierarchyMap<MeasurementSelectorCuts>
Geometry-dependent cut configuration.
Different components on the geometry can require different cut settings. The configuration must either contain explicit settings for all geometry components that are used or contain a global default.
Public Functions
-
MeasurementSelector() = default
Default constructor.
-
inline MeasurementSelector(Config config)
Constructor with config and (non-owning) logger.
- Parameters
config – a config instance
-
template<typename traj_t>
inline Result<std::pair<typename std::vector<typename MultiTrajectory<traj_t>::TrackStateProxy>::iterator, typename std::vector<typename MultiTrajectory<traj_t>::TrackStateProxy>::iterator>> select(std::vector<typename MultiTrajectory<traj_t>::TrackStateProxy> &candidates, bool &isOutlier, const Logger &logger) const Function that select the measurements compatible with the given track parameter on a surface.
- Parameters
candidates – The track state candidates which already contain predicted parameters
isOutlier – The indicator for outlier or not
logger – The logger wrapper
- Returns
Pair of iterators into candidates marking the range of selected candidates
Private Functions
-
double calculateChi2(double *fullCalibrated, double *fullCalibratedCovariance, TrackStateTraits<MultiTrajectoryTraits::MeasurementSizeMax, false>::Parameters predicted, TrackStateTraits<MultiTrajectoryTraits::MeasurementSizeMax, false>::Covariance predictedCovariance, TrackStateTraits<MultiTrajectoryTraits::MeasurementSizeMax, false>::Projector projector, unsigned int calibratedSize) const¶
Private Static Functions
-
template<typename traj_t, typename cut_value_t>
static inline cut_value_t VariableCut(const typename Acts::MultiTrajectory<traj_t>::TrackStateProxy &trackState, const Acts::MeasurementSelector::Config::Iterator selector, const std::vector<cut_value_t> &cuts, LoggerWrapper logger)¶
-
using Config = Acts::GeometryHierarchyMap<MeasurementSelectorCuts>
-
struct MeasurementSelectorCuts¶
- #include <Acts/TrackFinding/MeasurementSelector.hpp>
Selection cuts for associating measurements with predicted track parameters on a surface.
The default configuration only takes the best matching measurement without a cut on the local chi2.
Public Members
-
std::vector<double> chi2CutOff = {std::numeric_limits<double>::max()}¶
Maximum local chi2 contribution.
-
std::vector<double> etaBins¶
bins in |eta| to specify variable selections
-
std::vector<size_t> numMeasurementsCutOff = {1}¶
Maximum number of associated measurements on a single surface.
-
std::vector<double> chi2CutOff = {std::numeric_limits<double>::max()}¶
-
class MeasurementSelector