EfficiencyPlotWrapper Class Reference

Note: This file assumes a certain structure on the input file.

The structure is as follows:

• dataset (TDirectory)
• ... some variables, plots ...
• Method_XXX (TDirectory)
  • XXX (TDirectory)
    • ... some plots ...
    • MVA_Method_XXX_Test_::classname#
    • MVA_Method_XXX_Train_::classname#
    • ... some plots ...
• Method_YYY (TDirectory)
  • YYY (TDirectory)
    • ... some plots ...
    • MVA_Method_YYY_Test_::classname#
    • MVA_Method_YYY_Train_::classname#
    • ... some plots ...
• TestTree (TTree)
  • ... data...
• TrainTree (TTree)
  • ... data...

Keeping this in mind makes the main loop in getRocCurves easier to follow :) Private class that simplify drawing plots combining information from several methods.

Each wrapper will manage a canvas and a legend and provide convenience functions to add data to these. It also provides a save function for saving an image representation to disk.

Feel free to extend this class as you see fit. It is intended as a convenience when showing multiclass roccurves, not a fully general tool.

Usage: auto p = new EfficiencyPlotWrapper(name, title, dataset, i): for (TGraph * g : listOfGraphs) { p->AddGraph(g); p->AddLegendEntry(methodName); } p->save();

Definition at line 88 of file efficienciesMulticlass.cxx.

Public Member Functions
	EfficiencyPlotWrapper (TString name, TString title, TString dataset, size_t i)
	Private class EfficiencyPlotWrapper - Implementation.
Int_t	addGraph (TGraph *graph)
	Adds a new graph to the plot.
void	addLegendEntry (TString methodTitle, TGraph *graph)
	WARNING: Uses the current color, thus the correct call ordering is: plotWrapper->addGraph(...); plotWrapper->addLegendEntry(...);.
void	save ()
	Saves the current state of the plot to disk.

Public Attributes
TCanvas *	fCanvas
Int_t	fColor
TString	fDataset
TLegend *	fLegend
UInt_t	fNumMethods

Private Member Functions
TCanvas *	newEfficiencyCanvas (TString name, TString title, size_t i)
	Helper to create new Canvas.
TLegend *	newEfficiencyLegend ()
	Helper to create new legend.

Private Attributes
Float_t	fdxL
Float_t	fdyH
Float_t	fx0L
Float_t	fy0H

Constructor & Destructor Documentation

EfficiencyPlotWrapper()

EfficiencyPlotWrapper::EfficiencyPlotWrapper	(	TString	name,
		TString	title,
		TString	dataset,
		size_t	i
	)

Private class EfficiencyPlotWrapper - Implementation.

Constructs a new canvas + auxiliary data for showing an efficiency plot.

Definition at line 395 of file efficienciesMulticlass.cxx.

Member Function Documentation

addGraph()

Int_t EfficiencyPlotWrapper::addGraph

(

TGraph *

graph

)

Adds a new graph to the plot.

The added graph should contain a single ROC curve.

Definition at line 419 of file efficienciesMulticlass.cxx.

addLegendEntry()

void EfficiencyPlotWrapper::addLegendEntry	(	TString	methodTitle,
		TGraph *	graph
	)

WARNING: Uses the current color, thus the correct call ordering is: plotWrapper->addGraph(...); plotWrapper->addLegendEntry(...);.

Definition at line 443 of file efficienciesMulticlass.cxx.

newEfficiencyCanvas()

TCanvas * EfficiencyPlotWrapper::newEfficiencyCanvas ( TString  name, TString  title, size_t  i  )

private

Helper to create new Canvas.

Parameters

name	Name...
title	Title to be displayed on canvas
i	Index to offset a collection of canvases from each other

Definition at line 462 of file efficienciesMulticlass.cxx.

newEfficiencyLegend()

TLegend * EfficiencyPlotWrapper::newEfficiencyLegend ( )

private

Helper to create new legend.

Definition at line 492 of file efficienciesMulticlass.cxx.

save()

void EfficiencyPlotWrapper::save

(

)

Saves the current state of the plot to disk.

Definition at line 507 of file efficienciesMulticlass.cxx.

Member Data Documentation

fCanvas

TCanvas* EfficiencyPlotWrapper::fCanvas

Definition at line 90 of file efficienciesMulticlass.cxx.

fColor

Int_t EfficiencyPlotWrapper::fColor

Definition at line 95 of file efficienciesMulticlass.cxx.

fDataset

TString EfficiencyPlotWrapper::fDataset

Definition at line 93 of file efficienciesMulticlass.cxx.

fdxL

Float_t EfficiencyPlotWrapper::fdxL

private

Definition at line 108 of file efficienciesMulticlass.cxx.

fdyH

Float_t EfficiencyPlotWrapper::fdyH

private

Definition at line 110 of file efficienciesMulticlass.cxx.

fLegend

TLegend* EfficiencyPlotWrapper::fLegend

Definition at line 91 of file efficienciesMulticlass.cxx.

fNumMethods

UInt_t EfficiencyPlotWrapper::fNumMethods

Definition at line 97 of file efficienciesMulticlass.cxx.

fx0L

Float_t EfficiencyPlotWrapper::fx0L

private

Definition at line 107 of file efficienciesMulticlass.cxx.

fy0H

Float_t EfficiencyPlotWrapper::fy0H

private

Definition at line 109 of file efficienciesMulticlass.cxx.