Simulation/check/ana/draw_plots.cxx

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TString vec_str_fnames[5] = {"_rec_electron.root", "_rec_muon.root", "_rec_pion.root", "_rec_kaon.root", "_rec_proton.root"};
 
void draw_plots(){
  TCanvas *c1 = new TCanvas("c1","check plots", 10,10,800,642);
  c1->Divide(2,3);
  for(int i=0; i<5; i++){
    TTree *t = new TTree();
    c1->cd(i+1);
    TString fname = vec_str_fnames[i];
    TFile f(fname);
    if(t) delete t;
    TTree *t = (TTree*)f.Get("n103");
    t->Draw("dEdx_meas:ptrk","","",10000);
    c1->Update();
  }
  c1->SaveAs("check_plots.jpg");
}