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Analysis: extend histogram registry example #5066

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jgrosseo merged 1 commit into from
Dec 15, 2020
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Analysis: extend histogram registry example #5066

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21 changes: 15 additions & 6 deletions Analysis/Tutorials/src/histogramRegistry.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -162,8 +162,6 @@ struct DTask {
spectra.add("before_cuts/hist1", "asdf", defaultParticleHist);
spectra.add("before_cuts/hist2", "asdf", defaultParticleHist);
spectra.add("before_cuts/hist3", "asdf", defaultParticleHist);
spectra.add("before_cuts/hist4", "asdf", defaultParticleHist);
spectra.add("before_cuts/hist5", "asdf", defaultParticleHist);

// clone whole category / group
spectra.addClone("before_cuts/", "after_cuts/");
Expand All @@ -173,6 +171,16 @@ struct DTask {
spectra.addClone("neutral/pions", "strange/funny/particles");
}

template <bool mode, typename T>
void fillHistos(const T& track)
{
static constexpr std::string_view subDir[] = {"before_cuts/", "after_cuts/"};

spectra.fill(HIST(subDir[mode]) + HIST("hist1"), track.pt(), track.eta(), 50., 0.);
spectra.fill(HIST(subDir[mode]) + HIST("hist2"), track.pt(), track.eta(), 50., 0.);
spectra.fill(HIST(subDir[mode]) + HIST("hist3"), track.pt(), track.eta(), 50., 0.);
}

void process(aod::Tracks const& tracks)
{
using namespace aod::track;
Expand All @@ -189,10 +197,11 @@ struct DTask {
spectra.fill(HIST("sigmas"), track.pt(), track.eta(), 50., 0.);
spectra.fill(HIST("lambdas"), track.pt(), track.eta(), 50., 0.);

spectra.fill(HIST("before_cuts/hist2"), track.pt(), track.eta(), 50., 0.);
spectra.fill(HIST("before_cuts/hist2"), track.pt(), track.eta(), 50., 0.);

spectra.fill(HIST("after_cuts/hist2"), track.pt(), track.eta(), 50., 0.);
// fill histograms before and after cuts
fillHistos<false>(track);
if (std::rand() > (RAND_MAX / 2)) {
fillHistos<true>(track);
}

spectra.fill(HIST("cascades"), track.pt(), track.eta(), 50., 0.);
spectra.fill(HIST("strange/funny/particles"), track.pt(), track.eta(), 50., 0.);
Expand Down