TupleEx.py

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#!/usr/bin/env python
 
"""
*******************************************************************************
*                                                                             *
* Simple example which illustrate the usage of useful                         *
* algorithm  base class for N-Tuple manipulations                             *
*                                                                             *
*******************************************************************************
"""
from __future__ import print_function
# =============================================================================
__author__ = 'Vanya BELYAEV Ivan.Belyaev@lapp.in2p3.fr'
# =============================================================================
 
import math
 
from GaudiPython.Bindings import gbl as cpp
 
Rndm = cpp.Rndm
 
from GaudiPython.GaudiAlgs import TupleAlgo, SUCCESS
 
# =============================================================================
# @class TupleEx
#  Simple algorithm which books&fills three histograms
#  @author Vanya BELYAEV ibelyaev@physics.syr.edu
#  @date 2006-11-26
 
 
class TupleEx(TupleAlgo):
    """
    Simple algorithm which implicitely book&fill N-Tuples
    """
 
    # standard constructor
 
    def __init__(self, name='TupleEx', **args):
        """ Constructor """
        TupleAlgo.__init__(self, name, **args)
 
    # the main execution method
    def execute(self):
        """
        The major method 'execute', it is invoked for each event
        """
 
        gauss = Rndm.Numbers(self.randSvc(), Rndm.Gauss(0.0, 1.0))
 
        tup = self.nTuple('My trivial N-tuple')
        for i in range(0, 100):
            tup.column('a', math.sin(i))
            tup.column('b', math.cos(i))
            tup.column('c', math.tan(i))
            tup.column('g', gauss())
            tup.write()
 
        return SUCCESS
 
 
# =============================================================================
# job configuration
#  @author Vanya BELYAEV ibelyaev@physics.syr.edu
#  @date 2006-11-26
def configure(gaudi=None):
    """ Configuration of the job """
 
    if not gaudi:
        from GaudiPython.Bindings import AppMgr
        gaudi = AppMgr()
 
    gaudi.JobOptionsType = 'NONE'
    gaudi.EvtSel = 'NONE'
    gaudi.HistogramPersistency = 'ROOT'
 
    gaudi.ExtSvc += ["NTupleSvc"]
 
    ntSvc = gaudi.service('NTupleSvc')
    ntSvc.Output = ["MYLUN DATAFILE='TupleEx.root' OPT='NEW' TYP='ROOT'"]
 
    gaudi.config()
 
    gaudi.DLLs = [
        'GaudiAlg',
        'RootHistCnv',
    ]
 
    alg = TupleEx(
        # configure the property
        NTupleLUN='MYLUN')
 
    gaudi.setAlgorithms([alg])
 
    return SUCCESS
 
 
# =============================================================================
# The actual job excution
#  @author Vanya BELYAEV ibelyaev@physics.syr.edu
#  @date 2006-11-26
if '__main__' == __name__:
    print(__doc__)
    from GaudiPython.Bindings import AppMgr
    gaudi = AppMgr()
    configure(gaudi)
    gaudi.run(20)
 
# =============================================================================
# The END
# =============================================================================