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Part5 analysis docs
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Part5 analysis docs
wdconinc-master-patch-73409
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Part5 analysis docs
Wouter Deconinck
requested to merge
wdconinc-master-patch-73409
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Jul 27, 2021
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e3a64cd6
Dataframe example
· e3a64cd6
Wouter Deconinck
authored
Jul 27, 2021
src/docs/part5/reconstruction_analysis.md
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@@ -250,6 +250,35 @@ TNetXNGFile** root://sci-xrootd.jlab.org//osgpool/eic/ATHENA/RECO/SING
KEY: TTree events;
1 Events tree
KEY: TTree metadata;
1 Metadata tree
events->
Draw
(
"ReconstructedParticlesInitFromTruth.p.px"
)
events->
Draw
(
"EcalBarrelClusters.energy"
)
events->
Draw
(
"EcalBarrelClusters.polar.theta:EcalBarrelClusters.polar.phi"
)
events->
Draw
(
"EcalBarrelClusters.polar.phi:EcalBarrelClusters.polar.theta"
,
"EcalBarrelClusters.edep"
,
"colz"
)
```
## Analysis of full simulation reconstruction output with RDataFrame commands
```
console
auto momenta_from_reconstruction(const std::vector<eic::ReconstructedParticleData>
& parts
)
{
std::vector<ROOT::Math::PxPyPzEVector>
momenta
{
parts.size
()}
;
std::transform(parts.begin(), parts.end(), momenta.begin(), [](const auto& part) {
return ROOT::Math::PxPyPzEVector{part.p.x, part.p.y, part.p.z, part.energy};
});
return momenta;
}
auto Q2(const std::vector<ROOT::Math::PxPyPzEVector>
& mom
)
{
std::vector<double>
Q2Vec
(
mom.size
()
)
;
ROOT::Math::PxPyPzEVector beamMom = {0, 0, 18, 18};
std::transform(mom.begin(), mom.end(), Q2Vec.begin(), [beamMom](const auto& part) {
return -(part - beamMom).M2();
});
return Q2Vec;
}
ROOT::RDataFrame d("events", "s3https://dtn01.sdcc.bnl.gov:9000/eictest/ATHENA/RECO/SINGLE/e-/1GeV/45to135deg/e-_1GeV_45to135deg.0001.root");
auto d0 = d.Define("p", momenta_from_reconstruction, {"ReconstructedParticles"}).Define("Q2", Q2, {"p"});
auto h_Q2_sim = d0.Histo1D({"h_Q2_sim", ";
GeV
;
counts
", 100, -5, 25}, "
Q2
");
auto& h1_Q2_sim = *h_Q2_sim;
h1_Q2_sim.DrawClone("hist");
```
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