void Convertcanv(){

{
   TFile myfile("gate1124Proj396.root","read");
   TH1F *htwo;
   TCanvas *c1 = (TCanvas*)myfile.Get("c1");
   htwo = (TH1F*)c1->GetPrimitive("ggdt_cube_zx_py");
   TCanvas c2;
   htwo->Draw();
}
}