fastjet_example_v1_interface.cc File Reference

#include "FjPseudoJet.hh"
#include "FjClusterSequence.hh"
#include <iostream>
#include <sstream>
#include <vector>

Include dependency graph for fastjet_example_v1_interface.cc:

Go to the source code of this file.

Functions
void	print_jets (const FjClusterSequence &clust_seq, const vector< FjPseudoJet > &jets)
	a function that pretty prints a list of jets
int	main (int argc, char **argv)
	an example program showing how to use fastjet

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Function Documentation

int main	(	int	argc,
		char **	argv
	)

an example program showing how to use fastjet

Definition at line 54 of file fastjet_example_v1_interface.cc.

References Best, fastjet::ClusterSequence::exclusive_jets(), fastjet::ClusterSequence::inclusive_jets(), print_jets(), and fastjet::ClusterSequence::strategy_string().

                                  {
  
  vector<FjPseudoJet> input_particles;
  
  // read in input particles
  double px, py , pz, E;
  while (cin >> px >> py >> pz >> E) {
    // create a FjPseudoJet with these components and put it onto
    // back of the input_particles vector
    input_particles.push_back(FjPseudoJet(px,py,pz,E)); 
  }

  // run the jet clustering with option R=1.0 and strategy=Best
  double Rparam = 1.0;
  FjClusterSequence clust_seq(input_particles, Rparam, Best);

  // tell the user what was done
  cout << "Strategy adopted by FastJet was "<<
       clust_seq.strategy_string()<<endl<<endl;

  // extract the inclusive jets with pt > 5 GeV, sorted by pt
  double ptmin = 5.0;
  vector<FjPseudoJet> inclusive_jets = clust_seq.inclusive_jets(ptmin);

  // print them out
  cout << "Printing inclusive jets with pt > "<< ptmin<<" GeV\n";
  cout << "---------------------------------------\n";
  print_jets(clust_seq, inclusive_jets);
  cout << endl;

  // extract the exclusive jets with dcut = 25 GeV^2 
  double dcut = 25.0;
  vector<FjPseudoJet> exclusive_jets = clust_seq.exclusive_jets(dcut);

  // print them out
  cout << "Printing exclusive jets with dcut = "<< dcut<<" GeV^2\n";
  cout << "--------------------------------------------\n";
  print_jets(clust_seq, exclusive_jets);


}

void print_jets	(	const FjClusterSequence &	,
		const vector< FjPseudoJet > &
	)

a function that pretty prints a list of jets

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