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multiFileExample.py
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multiFileExample.py
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#!/usr/bin/env python
from SpartyJetConfig import *
from ROOT import TStopwatch
#===============================================
## -------------------------------------------------------------
# Define what we want to run
fileList = ['../data/J2_clusters_wPile.root','../data/J2_clusters_wPile2.root']
input_treename = 'clusterTree'
output_dir = '../data/output/'
output_treename = 'SpartyJet_Tree'
nEvents = 10 # Events per file to use
## -------------------------------------------------------------
## Redefine this function according to needs
def build_input_maker(fname):
input_maker = createNtupleInputMaker(fname, inputprefix='Cluster')
return input_maker
## Redefine this function according to needs
def get_output_filename(inFile):
''' return output filename according to input filename f'''
outFile = output_dir+inFile[inFile.rfind('/')+1:]
return outFile.replace('.root', '.SJ.root')
# Define Jet Algorithms here
# ex: run three different size Kt algorithms
algList =[]
for s in [0.4, 0.5, 0.6]:
alg = SJ.FastJet.FastJetFinder('Kt'+str(int(s*10)),fj.kt_algorithm,s)
algList.append(alg)
# Loop through files and run SpartyJet
for f in fileList:
print "Opening: ",f
print "Results to be saved as: ",get_output_filename(f)
# For measuring performance
w=TStopwatch()
w.Start()
builder = SJ.JetBuilder()
builder.silent_mode() # Turn off debugging information
input_maker = build_input_maker(f)
builder.configure_input(input_maker)
builder.configure_output(output_treename,get_output_filename(f))
for a in algList:
builder.add_default_alg(a)
# set the output variable names
builder.change_jet_ouptut_var("Eta","Phi","Pt","E","m","ind","numC")
#builder.process_events() # all events or use -1
builder.process_events(nEvents)
w.Stop()
print 'Process Time for file: ', w.RealTime()

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