#include "TTree.h"
#include "TFile.h"

void try27() {
// open ROOT file 
	TFile *ftree = new TFile("tree_nucnet27.root", "recreate");

// creation of the first TTree
	TTree *expo = new TTree("exposure", "");
// creation and filling of branches to hold the variables
	expo->ReadFile("/home/mohammed/nucnet-tools-code/examples/analysis/exposure.txt","sequence/F:Exposure");
// Write, Scan and Print the Tree
	expo->Write();	
	expo->Scan();
	expo->Print();
// creation of the secound TTree
	TTree *fe = new TTree("fe", "");
// creation and filling of branches to hold the variables
	fe->ReadFile("/home/mohammed/nucnet-tools-code/examples/analysis/fe.txt","sequence/F:fe56:fe57:fe58");
// Write, Scan and Print the Tree
	fe->Write();
	fe->Scan();
	fe->Print();

expo->AddFriend(fe);

expo->Draw("fe56:Exposure ", "" , "line");
expo->Draw("fe57:Exposure", "" , "SAME line ");
expo->Draw("fe58:Exposure", "","SAME line");

}