Class MeasurementSelector

Class Documentation

class Acts::MeasurementSelector

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.

MeasurementSelector(Config cfg)

Constructor with config and (non-owning) logger.

Parameters

  • config: a config instance

  • logger: a logger instance

template<typename measurement_t>
Result<void> operator()(const BoundTrackParameters &predictedParams, const std::vector<measurement_t> &measurements, std::vector<std::pair<size_t, double>> &measChi2, std::vector<size_t> &measCandidateIndices, bool &isOutlier, LoggerWrapper logger) const

Operater that select the measurements compatible with the given track parameter on a surface.

Template Parameters

  • measurement_t: The type of measurement

Parameters

  • predictedParams: The predicted track parameter on a surface

  • measurements: The pool of measurements

  • measChi2: The container for index and chi2 of intermediate measurement candidates

  • measCandidateIndices: The container for index of final measurement candidates

  • isOutlier: The indicator for outlier or not

  • logger: The logger wrapper