Resolve "pi0 resolution for ECal barrel"

Closes #19 (closed)

benchmarks/barrel_ecal/scripts/emcal_barrel_pions_analysis.cxx

@@ -20,6 +20,8 @@
 #include "TF1.h"
 #include "TH1D.h"
 #include <TFitResult.h>
+#include "TSystem.h"
+#include <fstream>
 
 using ROOT::RDataFrame;
 using namespace ROOT::VecOps;
@@ -51,8 +53,17 @@ void emcal_barrel_pions_analysis(const char* input_fname = "sim_output/sim_emcal
        {"quantity", "resolution (in %)"},
        {"target", std::to_string(resolutionTarget)}}};
 */
+
   ROOT::EnableImplicitMT();
   ROOT::RDataFrame d0("events", input_fname);
+/*
+  auto colNames = d0.GetColumnNames();
+
+  ofstream out;
+  out.open("results/column_list.txt");
+  for (auto &&col : colNames){out << col << endl; cout << col << endl;}
+  out.close();
+  */
 
   // Thrown Energy [GeV]
   auto Ethr = [](std::vector<dd4pod::Geant4ParticleData> const& input) {
@@ -106,13 +117,13 @@ void emcal_barrel_pions_analysis(const char* input_fname = "sim_output/sim_emcal
     return result;
   };
 
-  // Relative Energy Resolution = (Esampling - Ethrown)/Ethrown
+  // Relative Energy Resolution = (Esampling - Ethrown)/Ethrownnnn
   auto eResol_rel = [](const std::vector<double>& sampled, const std::vector<double>& thrown) {
     std::vector<double> result;
     auto it_sam = sampled.cbegin();
     auto it_thr = thrown.cbegin();
     for (; it_sam != sampled.end() && it_thr != thrown.end(); ++it_sam, ++it_thr) {
-        result.push_back((*it_sam - *it_thr) / *it_sam);
+        result.push_back((*it_sam - *it_thr) / *it_thr);
     }
     return result;
   };
@@ -181,7 +192,7 @@ void emcal_barrel_pions_analysis(const char* input_fname = "sim_output/sim_emcal
   auto hdE          = d1.Histo1D({"hdE",      "dE; dE[GeV]; Events",              20, -7.5, 7.5}, "dE");//changed from 100
   auto hdE_rel      = d1.Histo1D({"hdE_rel",  "dE Relative; dE Relative; Events", 20, -7.5, 7.5}, "dE_rel");//changed from 100
   hdE_rel->Fit("gaus", "", "", -7.5,  7.5);
-  double* res       = hdE_rel->GetParameters();
+  double* res       = hdE_rel->GetFunction("gaus")->GetParameters();
 
   //Pass/Fail
   /*