plotting.ROC Class Reference

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 1121 of file plotting.py.

Constructor & Destructor Documentation

__init__()

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 1123 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

__str__()

def plotting.ROC.__str__

(

self

)

String representation, returns the name

Definition at line 1139 of file plotting.py.

References FP420HitsObject._name, TrackerHitsObject._name, PGeometricDet::Item._name, TrackingRecHitAlgorithm._name, Logger._name, hcaldqm::DQModule._name, citk::IsolationConeDefinitionBase._name, condhdf5tohdf5.H5DataProduct._name, WValidation._name, DrellYanValidation._name, hcaldqm::flag::Flag._name, hcaldqm::quantity::Quantity._name, HistoParams< T >._name, condhdf5tohdf5.H5Tag._name, CutApplicatorBase._name, condhdf5tohdf5.H5GlobalTag._name, HistoParams< TH2F >._name, HistoParams< TProfile2D >._name, conddb2hdf5.DBGlobalTag._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._TaskBasePlaceholder._name.

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

create()

def plotting.ROC.create	(		self,
			tdirectory
	)

Create and return the histogram from a TDirectory

Definition at line 1143 of file plotting.py.

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

    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 range(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

Member Data Documentation

_name

plotting.ROC._name

private

Definition at line 1134 of file plotting.py.

Referenced by plotting.ROC.__str__(), trackingPlots.TimePerEventPlot.__str__(), trackingPlots.TimePerTrackPlot.__str__(), trackingPlots.TimePerEventPlot._create(), plotting.PlotGroup._drawSeparate(), plotting.PlotGroup._save(), trackingPlots.TimePerTrackPlot.create(), plotting.Plot.create(), plotting.PlotGroup.draw(), plotting.Plot.getName(), plotting.PlotGroup.getName(), plotting.PlotterFolder.getName(), plotting.PlotterItem.getName(), plotting.PlotterFolder.getSelectionNameIterator(), validation.SimpleSample.name(), trackingPlots.Iteration.name(), plotting.PlotterItem.readDirs(), plotting.PlotGroup.remove(), and plotting.Plot.setName().

_xhistoName

plotting.ROC._xhistoName

private

Definition at line 1135 of file plotting.py.

Referenced by plotting.ROC.create().

_yhistoName

plotting.ROC._yhistoName

private

Definition at line 1136 of file plotting.py.

Referenced by plotting.ROC.create().

_zaxis

plotting.ROC._zaxis

private

Definition at line 1137 of file plotting.py.

Referenced by plotting.ROC.create().