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histogramTrackSelection.cxx
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62 lines (51 loc) · 2.15 KB
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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
///
/// \brief in this tutorial the information contained in table TrackSelection is
/// used to retrieve tracks of a given type.
/// This requires tables TracksExtended and TrackSelection. Therefor use
/// o2-analysis-trackextension --aod-file AO2D.root | o2-analysis-trackselection | o2-analysistutorial-histogram-track-selection --select n
/// with n: 0 = no selection, 1 = globalTracks, 2 = globalTracksSDD
/// \author
/// \since
#include "Framework/runDataProcessing.h"
#include "Framework/AnalysisTask.h"
#include "AnalysisCore/TrackSelection.h"
#include "AnalysisDataModel/TrackSelectionTables.h"
using namespace o2;
using namespace o2::framework;
using namespace o2::framework::expressions;
struct HistogramTrackSelection {
Configurable<int> selectedTracks{"select", 1, "Choice of track selection. 0 = no selection, 1 = globalTracks, 2 = globalTracksSDD"};
OutputObj<TH1F> pt{TH1F("pt", "pt", 100, 0., 50.)};
void init(o2::framework::InitContext&) {}
// group tracks according to collision
void process(aod::Collision const& collision,
soa::Join<aod::Tracks, aod::TrackSelection> const& tracks)
{
for (auto& track : tracks) {
// select tracks according to configurable selectedTracks
if (selectedTracks == 1 && !track.isGlobalTrack()) {
continue;
} else if (selectedTracks == 2 && !track.isGlobalTrackSDD()) {
continue;
}
// fill pt histogram
pt->Fill(track.pt());
}
}
};
WorkflowSpec defineDataProcessing(ConfigContext const& cfgc)
{
return WorkflowSpec{
adaptAnalysisTask<HistogramTrackSelection>(cfgc),
};
}