LArSamples::Splitter Class Reference

Tools so split an ntuple into smaller bits. More...

#include <Splitter.h>

Collaboration diagram for LArSamples::Splitter:

Public Member Functions
	Splitter (const Interface &interface)
	Constructor More...
bool	splitEvents (const TString &name, unsigned int max=20) const

Private Attributes
const Interface *	m_interface

Detailed Description

Tools so split an ntuple into smaller bits.

Definition at line 22 of file Splitter.h.

Constructor & Destructor Documentation

Splitter()

LArSamples::Splitter::Splitter ( const Interface &  interface )

inline

Constructor

Definition at line 27 of file Splitter.h.

: m_interface(&interface) { }

Member Function Documentation

splitEvents()

bool Splitter::splitEvents	(	const TString &	name,
		unsigned int	max = 20
	)		const

Definition at line 20 of file Splitter.cxx.

{
  std::map<unsigned int, bool> events;
  
  cout << "Scanning ntuple..." << endl;
  for (unsigned int i = 0; i < m_interface->nChannels(); i++) {
    const History* history = m_interface->cellHistory(i);
    if (!history) continue;
    for (unsigned int k = 0; k < history->nData(); k++)
      events[history->data(k)->event()] = true;
  }
   
  cout << "Found " << events.size() << " events";
  if (events.size() > max) {
    cout << ", greater than specified maximum (" << max << "), aborting..." << endl;
    return false;
  }
  cout << ", will now split the ntuple" << endl;
  
  unsigned int i = 1;
  for (std::map<unsigned int, bool>::const_iterator event = events.begin();
       event != events.end(); ++event, ++i) {
    cout << "Processing event " << event->first << " (" << i << " of " << events.size() << ")" << endl;
    FilterParams f;
    f.addEvent(event->first);
    m_interface->filter(f, DataTweaker(), Form("%s_%d.root", name.Data(), event->first));
  }
 
  return true;
}

Member Data Documentation

m_interface

const Interface* LArSamples::Splitter::m_interface

private

Definition at line 33 of file Splitter.h.

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The documentation for this class was generated from the following files:

• Splitter.h
• Splitter.cxx