Public Member Functions
def	__init__ (self, name, xhistoName, yhistoName, zaxis=False)

def	__str__ (self)

def	create (self, tdirectory)

Private Attributes
	_name

	_xhistoName

	_yhistoName

	_zaxis

Detailed Description

Class to construct a ROC curve (e.g. efficiency vs. fake rate) from two histograms

Definition at line 1117 of file plotting.py.

Constructor & Destructor Documentation

def plotting.ROC.__init__	(	self,
		name,
		xhistoName,
		yhistoName,
		zaxis = `False`
	)

Constructor.

Arguments:
name       -- String for the name of the resulting histogram
xhistoName -- String for the name of the x-axis histogram (or another "creator" object)
yhistoName -- String for the name of the y-axis histogram (or another "creator" object)

Keyword arguments:
zaxis -- If set to True (default False), create a TGraph2D with z axis showing the cut value (recommended drawStyle 'pcolz')

Definition at line 1119 of file plotting.py.

     def __init__(self, name, xhistoName, yhistoName, zaxis=False):
         """Constructor.
 
         Arguments:
         name       -- String for the name of the resulting histogram
         xhistoName -- String for the name of the x-axis histogram (or another "creator" object)
         yhistoName -- String for the name of the y-axis histogram (or another "creator" object)
 
         Keyword arguments:
         zaxis -- If set to True (default False), create a TGraph2D with z axis showing the cut value (recommended drawStyle 'pcolz')
         """
         self._name = name
         self._xhistoName = xhistoName
         self._yhistoName = yhistoName
         self._zaxis = zaxis
 

Member Function Documentation

def plotting.ROC.__str__ ( self )

String representation, returns the name

Definition at line 1135 of file plotting.py.

References FP420HitsObject._name, TrackerHitsObject._name, PGeometricDet::Item._name, TrackingRecHitAlgorithm._name, LikelihoodSpecies._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, plotting.AggregateBins._name, plotting.AggregateHistos._name, plotting.ROC._name, and SequenceTypes.TaskPlaceholder._name.

     def __str__(self):
         """String representation, returns the name"""
         return self._name
 

def plotting.ROC.create	(	self,
		tdirectory
	)

Create and return the histogram from a TDirectory

Definition at line 1139 of file plotting.py.

References plotting._getOrCreateObject(), plotting.ROC._xhistoName, plotting.ROC._yhistoName, and plotting.ROC._zaxis.

     def create(self, tdirectory):
         """Create and return the histogram from a TDirectory"""
         xhisto = _getOrCreateObject(tdirectory, self._xhistoName)
         yhisto = _getOrCreateObject(tdirectory, self._yhistoName);
         if xhisto is None or yhisto is None:
             return None
 
         x = []
         xerrup = []
         xerrdown = []
         y = []
         yerrup = []
         yerrdown = []
         z = []
 
         for i in xrange(1, xhisto.GetNbinsX()+1):
             x.append(xhisto.GetBinContent(i))
             xerrup.append(xhisto.GetBinError(i))
             xerrdown.append(xhisto.GetBinError(i))
 
             y.append(yhisto.GetBinContent(i))
             yerrup.append(yhisto.GetBinError(i))
             yerrdown.append(yhisto.GetBinError(i))
 
             z.append(xhisto.GetXaxis().GetBinUpEdge(i))
 
         # If either axis has only zeroes, no graph makes no point
         if x.count(0.0) == len(x) or y.count(0.0) == len(y):
             return None
 
         arr = lambda v: array.array("d", v)
         gr = None
         if self._zaxis:
             gr = ROOT.TGraph2D(len(x), arr(x), arr(y), arr(z))
         else:
             gr = ROOT.TGraphAsymmErrors(len(x), arr(x), arr(y), arr(xerrdown), arr(xerrup), arr(yerrdown), arr(yerrup))
         gr.SetTitle("")
         return gr
 
 
 # Plot styles