readTreeDF.cxx

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// Author: Alvaro Tolosa-Delgado CERN 07/2023
// Author: Jorge Agramunt Ros IFIC(Valencia,Spain) 07/2023
 
/*************************************************************************
 * Copyright (C) 1995-2023, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
/* Example of reading a TTree using the RDataFrame interface
 * Documentation of RDataFrame: https://root.cern/doc/master/classROOT_1_1RDataFrame.html
 */
 
#include <ROOT/RDataFrame.hxx>
 
#include "data2Tree.hxx"
 
void readTreeDF()
{
 
   ROOT::RDataFrame df{"myTree", "testFile.root"};
   df.Display({"branch1.time", "branch1.energy", "branch2.time", "branch2.energy"}, /*nRows*/ 10)->Print();
}