HistReader Class Reference

Auxiliary class to simplify reading of histograms in PileUpIdWeight::LoadScaleFactors. More...

Collaboration diagram for HistReader:

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List of all members.

Public Member Functions
	HistReader (std::filesystem::path const &path)
std::shared_ptr< TH2 >	operator() (std::string const &name)
Private Attributes
TFile	file_
std::map< std::string, std::shared_ptr< TH2 > >	readHistograms_

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Detailed Description

Auxiliary class to simplify reading of histograms in PileUpIdWeight::LoadScaleFactors.

It reads 2D histograms for a ROOT file, wrapping them in std::shared_ptr. If a histogram with the same name is requested again, the already existing std::shared_ptr is returned.

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The documentation for this class was generated from the following file:

• src/PileUpIdWeight.cc