Belle II Software  release-05-01-25
variablesToHistogram.py
1 #!/usr/bin/env python3
2 
3 # The VariablesToHistogram module saves variables from the VariableManager
4 # to TH1F and TH2F here is an example of how to use it.
5 #
6 # Thomas Keck and Sam Cunliffe
7 #
8 # For full documentation please refer to https://software.belle2.org
9 # Anything unclear? Ask questions at https://questions.belle2.org
10 
11 import basf2
12 import modularAnalysis as ma # a shorthand for the analysis tools namespace
13 
14 mypath = basf2.Path() # create a new path
15 
16 # add input data and ParticleLoader modules to the path
17 ma.inputMdstList('default', [basf2.find_file('analysis/tests/mdst.root')], path=mypath)
18 ma.fillParticleLists([('K-', 'kaonID > 0.2'), ('pi+', 'pionID > 0.2')], path=mypath)
19 ma.reconstructDecay('D0 -> K- pi+', '1.750 < M < 1.95', path=mypath)
20 ma.matchMCTruth('D0', path=mypath)
21 
22 # add the VariablesToHistogram module explicitly
23 mypath.add_module('VariablesToHistogram',
24  particleList='D0',
25  variables=[('dM', 100, -2.0, 2.0),
26  ('isSignal', 2, -0.5, 1.5),
27  ('mcErrors', 1025, -0.5, 1024.5),
28  ('p', 1000, 0.0, 5.0),
29  ('E', 1000, 0.0, 5.0),
30  ('daughter(0, kaonID)', 100, 0.0, 1.0),
31  ('daughter(1, pionID)', 100, 0.0, 1.0)],
32  variables_2d=[('dM', 100, -2.0, 2.0, 'isSignal', 2, -0.5, 1.5),
33  ('p', 100, -2.0, 2.0, 'isSignal', 2, -0.5, 1.5),
34  ('dM', 100, -2.0, 2.0, 'mcErrors', 1025, -0.5, 1024.5)])
35 
36 # you might also like to uncomment the following, and read the help for the
37 # convenient wrapper function:
38 # print(help(ma.variablesToHistogram))
39 
40 # process the data
41 basf2.process(mypath)
42 print(basf2.statistics)
basf2.process
def process(path, max_event=0)
Definition: __init__.py:25