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Add custom histogram binning support #32

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Merged
lubynets merged 1 commit into from
Jun 30, 2025
Merged

Add custom histogram binning support #32

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56 changes: 48 additions & 8 deletions src/EntryConfig.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -66,9 +66,22 @@ EntryConfig::EntryConfig(const Axis& x, Cuts* cuts_x, const Axis& y, Cuts* cuts_
}

TH1* EntryConfig::CreateHisto1D() const {
auto* ret = new TH1FD(name_.c_str(), title_.c_str(),
axes_.at(0).GetNbins(), axes_.at(0).GetXmin(), axes_.at(0).GetXmax());
ret->SetXTitle(axes_.at(0).GetTitle());
const TAxis& x_axis = axes_.at(0);
const TArrayD* xbins = x_axis.GetXbins();

TH1* ret = nullptr;

if (xbins && xbins->GetSize() > 0) {
// Variable binning
ret = new TH1FD(name_.c_str(), title_.c_str(),
xbins->GetSize() - 1, xbins->GetArray());
} else {
// Uniform binning
ret = new TH1FD(name_.c_str(), title_.c_str(),
x_axis.GetNbins(), x_axis.GetXmin(), x_axis.GetXmax());
}

ret->SetXTitle(x_axis.GetTitle());
ret->SetYTitle("Entries");
return ret;
}
Expand All @@ -90,14 +103,41 @@ TProfile* EntryConfig::CreateProfile() const {
}

TH2* EntryConfig::CreateHisto2D() const {
const TAxis& x_axis = axes_.at(0);
const TAxis& y_axis = axes_.at(1);

const TArrayD* xbins = x_axis.GetXbins();
const TArrayD* ybins = y_axis.GetXbins();

TH2* ret = nullptr;

if (xbins && xbins->GetSize() > 0 && ybins && ybins->GetSize() > 0) {
// Both axes have variable binning
ret = new TH2FD(name_.c_str(), title_.c_str(),
xbins->GetSize() - 1, xbins->GetArray(),
ybins->GetSize() - 1, ybins->GetArray());
} else if (xbins && xbins->GetSize() > 0) {
// Only X axis has variable binning
ret = new TH2FD(name_.c_str(), title_.c_str(),
xbins->GetSize() - 1, xbins->GetArray(),
y_axis.GetNbins(), y_axis.GetXmin(), y_axis.GetXmax());
} else if (ybins && ybins->GetSize() > 0) {
// Only Y axis has variable binning
ret = new TH2FD(name_.c_str(), title_.c_str(),
x_axis.GetNbins(), x_axis.GetXmin(), x_axis.GetXmax(),
ybins->GetSize() - 1, ybins->GetArray());
} else {
// Both axes are uniform
ret = new TH2FD(name_.c_str(), title_.c_str(),
x_axis.GetNbins(), x_axis.GetXmin(), x_axis.GetXmax(),
y_axis.GetNbins(), y_axis.GetXmin(), y_axis.GetXmax());
}

auto* ret = new TH2FD(name_.c_str(), title_.c_str(),
axes_.at(0).GetNbins(), axes_.at(0).GetXmin(), axes_.at(0).GetXmax(),
axes_.at(1).GetNbins(), axes_.at(1).GetXmin(), axes_.at(1).GetXmax());
ret->SetXTitle(axes_.at(0).GetTitle());
ret->SetYTitle(axes_.at(1).GetTitle());
ret->SetXTitle(x_axis.GetTitle());
ret->SetYTitle(y_axis.GetTitle());
ret->SetZTitle("Entries");
ret->SetMinimum(1);

return ret;
}

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