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readEvents.py

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#!/usr/bin/env python
# Example of reading raw data with Python
#
# Usage: 
#
#  $ ./readEvents.py daq.data
#
#  Created by: dandwyer@caltech.edu  23/10/2009

def readEvents(filename, maxEvents = 10):
  # Load dictionary
  import ROOT
  ROOT.gSystem.Load("libCintex")
  ROOT.Cintex.Enable()
  ROOT.gSystem.Load("libRawDataDict")

  # Make reader an open raw data file
  rr = ROOT.DayaBay.RawDataReader()
  ok = rr.open( filename );
  if not ok:
    print "Failed to open: ", filename;
    return

  # Loop over event data blocks
  currentEvent = 0;
  while True:
    event = rr.nextEvent()
    if not event: break
    event.dump( ROOT.cout )    
    currentEvent += 1
    if currentEvent > maxEvents: break
  return

if __name__ == "__main__":
    import sys
    if len(sys.argv) != 2:
        print "Usage: ./readEvents.py daq.data"
        sys.exit(1)
    readEvents( sys.argv[1] )

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