TH2F *h2;
TH1D * projh2X;
TH1D * projh2Y;
TPad *right_pad, *top_pad;
 
void myver_h2proj()
{
   auto c1 = new TCanvas("c1", "c1",900,900);
   gStyle->SetOptStat(0);
 
   TPad *center_pad = new TPad("center_pad", "center_pad",0.0,0.0,0.6,0.6);
   center_pad->Draw();
 
   right_pad = new TPad("right_pad", "right_pad",0.55,0.0,1.0,0.6);
   right_pad->Draw();
 
   top_pad = new TPad("top_pad", "top_pad",0.0,0.55,0.6,1.0);
   top_pad->Draw();

gStyle->SetOptStat(0);
gStyle->SetOptFit(0);

TFile *f= new TFile("Hist0new_158.root");
f->ls();
TH2D *h1 = (TH2D*)f->Get("h1");

   center_pad->cd();
   h1->Draw("lego2");
   projh2X = h1->ProjectionX();
   projh2Y = h1->ProjectionY();


   top_pad->cd();
   projh2X->Draw("E1");

   right_pad->cd();
   projh2Y->Draw("E1");

}