void Profile()
{
  // Create a canvas giving the coordinates and the size
  TCanvas *c1 = new TCanvas("c1", "Profile example",200,10,700,500);

  
  TFile *f0 = new TFile ("TBCResolution_100K_sample1_5K_correct.root");

  TH2F *h;
  h = (TH2F*)f0->Get("DeltaTVSChannel_RR");
  
  
  
   TProfile *prof = h->ProfileX();         //project a 2D histogram into a profile histo(plots the mean with its standard error per bin) along X
   prof->SetAxisRange(21.75, 21.95,"Y"); // selects the range of Y axis
   //prof->SetAxisRange(0, 8192,"X");
    gStyle->SetStatFormat("6.7g");      // sets the significant figures to be 7
    
   
  prof->Fit("pol0");
  gStyle->SetOptFit();                 // shows statistics box
   
   
    
 
    prof->Draw();
    
   
}