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plotting.CutEfficiency Class Reference

Public Member Functions

def __init__ (self, name, histo, title="")
 
def __str__ (self)
 
def create (self, tdirectory)
 

Private Attributes

 _histo
 
 _name
 
 _title
 

Detailed Description

Class for making a cut efficiency histograms.

      N after cut
eff = -----------
        N total

Definition at line 894 of file plotting.py.

Constructor & Destructor Documentation

def plotting.CutEfficiency.__init__ (   self,
  name,
  histo,
  title = "" 
)
Constructor

Arguments:
name  -- String for name of the resulting histogram
histo -- String for a source histogram (needs to be cumulative)

Definition at line 901 of file plotting.py.

901  def __init__(self, name, histo, title=""):
902  """Constructor
903 
904  Arguments:
905  name -- String for name of the resulting histogram
906  histo -- String for a source histogram (needs to be cumulative)
907  """
908  self._name = name
909  self._histo = histo
910  self._title = title
911 
def __init__(self, name, histo, title="")
Definition: plotting.py:901

Member Function Documentation

def plotting.CutEfficiency.__str__ (   self)
def plotting.CutEfficiency.create (   self,
  tdirectory 
)
Create and return the cut efficiency histogram from a TDirectory

Definition at line 916 of file plotting.py.

References plotting._getOrCreateObject(), plotting.Transform._histo, plotting.CutEfficiency._histo, FP420HitsObject._name, TrackerHitsObject._name, PGeometricDet::Item._name, LikelihoodSpecies._name, TrackingRecHitAlgorithm._name, LikelihoodPdfProduct._name, LikelihoodPdf._name, citk::IsolationConeDefinitionBase._name, Logger._name, hcaldqm::DQModule._name, DrellYanValidation._name, WValidation._name, HistoParams< T >._name, hcaldqm::flag::Flag._name, hcaldqm::quantity::Quantity._name, CutApplicatorBase._name, GeometricDetExtra._name, HistoParams< TH2F >._name, HistoParams< TProfile2D >._name, Vispa.Views.PropertyView.Property._name, SequenceTypes.SequencePlaceholder._name, plotting.Subtract._name, plotting.Transform._name, plotting.FakeDuplicate._name, plotting.CutEfficiency._name, SequenceTypes.TaskPlaceholder._name, HistoParams< T >._title, HistoParams< TH2F >._title, SiStripHitEffFromCalibTree._title, HistoParams< TProfile2D >._title, html.PageSet._title, html.HtmlReport._title, plotting.Subtract._title, plotting.Transform._title, plotting.FakeDuplicate._title, and plotting.CutEfficiency._title.

916  def create(self, tdirectory):
917  """Create and return the cut efficiency histogram from a TDirectory"""
918  histo = _getOrCreateObject(tdirectory, self._histo)
919  if not histo:
920  return None
921 
922  # infer cumulative direction from the under/overflow bins
923  ascending = histo.GetBinContent(0) < histo.GetBinContent(histo.GetNbinsX())
924  if ascending:
925  n_tot = histo.GetBinContent(histo.GetNbinsX())
926  else:
927  n_tot = histo.GetBinContent(0)
928 
929  if n_tot == 0:
930  return histo
931 
932  ret = histo.Clone(self._name)
933  ret.SetTitle(self._title)
934 
935  # calculate efficiency
936  for i in xrange(1, histo.GetNbinsX()+1):
937  n = histo.GetBinContent(i)
938  val = n/n_tot
939  errVal = math.sqrt(val*(1-val)/n_tot)
940  ret.SetBinContent(i, val)
941  ret.SetBinError(i, errVal)
942  return ret
943 
def _getOrCreateObject(tdirectory, nameOrCreator)
Definition: plotting.py:55
def create(self, tdirectory)
Definition: plotting.py:916

Member Data Documentation

plotting.CutEfficiency._histo
private

Definition at line 909 of file plotting.py.

Referenced by plotting.CutEfficiency.create().

plotting.CutEfficiency._name
private
plotting.CutEfficiency._title
private

Definition at line 910 of file plotting.py.

Referenced by plotting.CutEfficiency.create(), and plotting.Plot.create().