[PWGEM/Dilepton] swap axes for visualization (#12502)

Author: dsekihat

PWGEM/Dilepton/Core/DileptonHadronMPC.h

@@ -527,7 +527,7 @@ struct DileptonHadronMPC {
 
       // hadron-hadron
       const AxisSpec axis_dphi_hh{cfgNbinsDPhi, -M_PI / 2, 3 * M_PI / 2, "#Delta#varphi = #varphi_{h}^{ref1} - #varphi_{h}^{ref2} (rad.)"};
-      fRegistry.add("HadronHadron/same/hDEtaDPhi", "hadron-hadron 2PC", kTH2D, {axis_deta_hh, axis_dphi_hh}, true);
+      fRegistry.add("HadronHadron/same/hDEtaDPhi", "hadron-hadron 2PC", kTH2D, {axis_dphi_hh, axis_deta_hh}, true);
       fRegistry.addClone("HadronHadron/same/", "HadronHadron/mix/");
       fRegistry.add("HadronHadron/mix/hDiffBC", "diff. global BC in mixed event;|BC_{current} - BC_{mixed}|", kTH1D, {{10001, -0.5, 10000.5}}, true);
     } else if (cfgAnalysisType == static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonHadronAnalysisType::kCumulant)) {
@@ -541,7 +541,7 @@ struct DileptonHadronMPC {
 
       // hadron-hadron
       const AxisSpec axis_cosndphi_hh{cfgNbinsCosNDPhi, -1, +1, std::format("cos({0:d}(#varphi_{{h}}^{{trg}} - #varphi_{{h}}^{{ref}}))", cfgNmod.value)};
-      fRegistry.add("HadronHadron/same/hDEtaCosNDPhi", "hadron-hadron 2PC", kTH2D, {axis_deta_hh, axis_cosndphi_hh}, true);
+      fRegistry.add("HadronHadron/same/hDEtaCosNDPhi", "hadron-hadron 2PC", kTH2D, {axis_cosndphi_hh, axis_deta_hh}, true);
     }
     fRegistry.add("Dilepton/mix/hDiffBC", "diff. global BC in mixed event;|BC_{current} - BC_{mixed}|", kTH1D, {{10001, -0.5, 10000.5}}, true);
   }
@@ -994,11 +994,11 @@ struct DileptonHadronMPC {
 
     if (cfgAnalysisType == static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonHadronAnalysisType::kAzimuthalCorrelation)) {
       dphi = RecoDecay::constrainAngle(dphi, -M_PI / 2, 1U);
-      fRegistry.fill(HIST("HadronHadron/") + HIST(event_pair_types[ev_id]) + HIST("hDEtaDPhi"), deta, dphi, weight);
+      fRegistry.fill(HIST("HadronHadron/") + HIST(event_pair_types[ev_id]) + HIST("hDEtaDPhi"), dphi, deta, weight);
     } else if (cfgAnalysisType == static_cast<int>(o2::aod::pwgem::dilepton::utils::pairutil::DileptonHadronAnalysisType::kCumulant)) {
       o2::math_utils::bringTo02Pi(dphi);
       float cosndphi = std::cos(cfgNmod * dphi);
-      fRegistry.fill(HIST("HadronHadron/") + HIST(event_pair_types[ev_id]) + HIST("hDEtaCosNDPhi"), deta, cosndphi, weight);
+      fRegistry.fill(HIST("HadronHadron/") + HIST(event_pair_types[ev_id]) + HIST("hDEtaCosNDPhi"), cosndphi, deta, weight);
     }
 
     // store ref tracks for mixed event in case of kAzimuthalCorrelation

PWGEM/PhotonMeson/Core/DiphotonHadronMPC.h

@@ -374,7 +374,7 @@ struct DiphotonHadronMPC {
     const AxisSpec axis_deta_hh{ConfDEtaBins, "#Delta#eta = #eta_{h}^{ref1} - #eta_{h}^{ref2}"};
     const AxisSpec axis_dphi_hh{cfgNbinsDPhi, -M_PI / 2, +3 * M_PI / 2, "#Delta#varphi = #varphi_{h}^{ref1} - #varphi_{h}^{ref2} (rad.)"};
     // const AxisSpec axis_cosndphi_hh{cfgNbinsCosNDPhi, -1, +1, std::format("cos({0:d}(#varphi_{{h}}^{{ref1}} - #varphi_{{h}}^{{ref2}}))", cfgNmod.value)};
-    fRegistry.add("HadronHadron/same/hDEtaDPhi", "hadron-hadron 2PC", kTH2D, {axis_deta_hh, axis_dphi_hh}, true);
+    fRegistry.add("HadronHadron/same/hDEtaDPhi", "hadron-hadron 2PC", kTH2D, {axis_dphi_hh, axis_deta_hh}, true);
     fRegistry.addClone("HadronHadron/same/", "HadronHadron/mix/");
   }
 
@@ -720,7 +720,7 @@ struct DiphotonHadronMPC {
             float dphi = ref1.phi() - ref2.phi();
             // o2::math_utils::bringTo02Pi(dphi);
             dphi = RecoDecay::constrainAngle(dphi, -M_PI / 2, 1U);
-            fRegistry.fill(HIST("HadronHadron/same/hDEtaDPhi"), deta, dphi);
+            fRegistry.fill(HIST("HadronHadron/same/hDEtaDPhi"), dphi, deta);
           }
         }
       }
@@ -917,7 +917,7 @@ struct DiphotonHadronMPC {
             float dphi = ref1.phi() - ref2.phi();
             // o2::math_utils::bringTo02Pi(dphi);
             dphi = RecoDecay::constrainAngle(dphi, -M_PI / 2, 1U);
-            fRegistry.fill(HIST("HadronHadron/mix/hDEtaDPhi"), deta, dphi);
+            fRegistry.fill(HIST("HadronHadron/mix/hDEtaDPhi"), dphi, deta);
           }
         }
       } // end of loop over mixed event pool between hadron-hadron