# Plotting of 1D distribution for Max Energy in Z

Dear Experts
I need to plot 1D distribution for max energy in Z (separate histogram in the following macro) Can You suggest How it can be done? Thanks a lot in advance

``````
void fiber_dep()
{
// *************************************************************************
// Rootfile and Tree
TFile* f = new TFile("lumi_fiber_calMay10.edm4hep.root");
f->cd();

//TTree* t = (TTree*)f->Get("events");

// Rootfile and Tree
// *************************************************************************
// *************************************************************************
// Histograms

map<string,TH3*> h3;

float xmin = -50;
float xmax = 50;
int nx = 100;
float ymin = -50;
float ymax = 50;
int ny = 100;
float zmin = 66150;
float zmax = 66350;
int nz = 200;

h3["energy"] = new TH3F("energy", "Total Energy Deposit;x;y;z", nx, xmin, xmax, ny, ymin, ymax, nz, 0, zmax - zmin);

/*
map<string,vector<TH1*>> h1;

for (int i = 0; i < h3["hits"]->GetNbinsX()*h3["hits"]->GetNbinsY()*h3["hits"]->GetNbinsZ(); i++)
{
ss.str(""); ss << "h1_cell_energy_" << i;
h1["energy"].push_back(new TH1F(TString(ss.str()), "", 100, 0, 0.001));
ss.str(""); ss << "Cell " << i << ";E_{#gamma} (GeV); Entries";
h1["energy"][i]->SetTitle(TString(ss.str()));
}
*/
TRandom3 *rndm = new TRandom3();
int nev = 0;
vector<int> nphoton;
float xxx = 0;
float yyy = 0;
float zzz = 0;
{
nev++;
cout << "Event: " << nev << endl;
nphoton.push_back(0);
float tot_e = 0;

for (int i = 0; i < energy.GetSize(); i++)
{
nphoton.back()++;
tot_e += energy[i];
// h3["energy"]->Fill(x[i],y[i],abs(z[i]) - zmin,energy[i]);
h3["energy"]->Fill(x[i]+rndm->Gaus(0,1) ,y[i] + rndm->Gaus(0,1) , abs(z[i]) - zmin,energy[i] );
xxx = max(abs(x[i]), xxx);
yyy = max(abs(y[i]), yyy);
zzz = max(abs(z[i]), zzz);
}
}

cout << "Max-X: " << xxx << endl;
cout << "Max-Y: " << yyy << endl;
cout << "Max-Z: " << zzz << endl;
// Fill Histograms
// *************************************************************************

// *************************************************************************
// Draw Histograms
for (map<string,TH3*>::const_iterator itr = h3.begin(); itr != h3.end(); itr++)
{
//gStyle->SetOptStat(0);

string hname = itr->first;
TH3* h = (TH3*)itr->second->Clone();
h->Scale(1.0/float(h->Integral()));

TCanvas* c = new TCanvas("c", "", 1000, 1000);

//  c->cd();
// h->Draw("BOX2Z");
// h->Draw();
// ss.str(""); ss << "test_" << hname << ".png";
// c->SaveAs(TString(ss.str()));

TH2* h2yx = (TH2*)h->Project3D("yx")->Clone();
TH2* h2zx = (TH2*)h->Project3D("zx")->Clone();
TH2* h2zy = (TH2*)h->Project3D("zy")->Clone();
TH1* h1x = (TH1*)h->Project3D("x")->Clone();
TH1* h1y = (TH1*)h->Project3D("y")->Clone();
TH1* h1z = (TH1*)h->Project3D("z")->Clone();

c->cd();
h2yx->Draw("colz");
ss.str(""); ss << "test2D_yx_" << hname << ".png";
c->SaveAs(TString(ss.str()));

h2zx->Draw("colz");
ss.str(""); ss << "test2D_zx_" << hname << ".png";
c->SaveAs(TString(ss.str()));

h2zy->Draw("colz");
ss.str(""); ss << "test2D_zy_" << hname << ".png";
c->SaveAs(TString(ss.str()));

h1x->Draw("colz");
ss.str(""); ss << "test1D_x_" << hname << ".png";
c->SaveAs(TString(ss.str()));

h1y->Draw("colz");
ss.str(""); ss << "test1D_y_" << hname << ".png";
c->SaveAs(TString(ss.str()));

h1z->Draw("colz");
ss.str(""); ss << "test1D_z_" << hname << ".png";
c->SaveAs(TString(ss.str()));

c->Close();

}
// Draw Histograms
// *************************************************************************

}
``````