LEPBandPlot Class Reference

LEPBandPlot: The plot for the CL bands "a la LEP". More...

#include <LEPBandPlot.h>

Inheritance diagram for LEPBandPlot:

Public Member Functions
void	draw (const char *options="")
	Draw on canvas. More...
void	dumpToFile (const char *RootFileName, const char *options)
	All the objects are written to rootfile. More...
	LEPBandPlot (const char *name, const char *title, const int n_points, double *x_vals, double *sb_vals, double *b_vals, double *b_rms, double *exp_vals=0)
	Constructor. More...
	LEPBandPlot (const char *name, const char *title, const int n_points, double *x_vals, double *sb_vals, double *b_vals, double *b_up_bars1, double *b_down_bars1, double *b_up_bars2, double *b_down_bars2, double *exp_vals=0)
	Constructor. More...
void	print (const char *options="")
	Print the relevant information. More...
void	setTitle (const char *title)
	Set the title of the plot. More...
void	setXaxisTitle (const char *title)
	Set the title of the x axis. More...
	~LEPBandPlot ()
	Destructor. More...
Public Member Functions inherited from StatisticalPlot
void	dumpToImage (const char *filename)
	Write an image on disk. More...
TCanvas *	getCanvas ()
	Get the canvas. More...
bool	is_verbose ()
	get the verbosity More...
void	setCanvas (TCanvas *new_canvas)
	Set the canvas. More...
void	setVerbosity (bool verbosity)
	Set the verbosity. More...
	StatisticalPlot (const char *name, const char *title, bool verbosity=true)
	Constructor. More...
	~StatisticalPlot ()
	Destructor. More...

Private Attributes
TGraph *	m_b_band_graph_1sigma
	The b band 1 sigma. More...
TGraph *	m_b_band_graph_2sigma
	The b band 2 sigma. More...
TGraph *	m_b_line_graph
	The b line. More...
TGraph *	m_data_line_graph
	The data line. More...
TLegend *	m_legend
	The legend. More...
TGraph *	m_sb_line_graph
	The sb line. More...
TLine *	m_zero_line
	The line at 0. More...

Detailed Description

LEPBandPlot: The plot for the CL bands "a la LEP".

Revision:

1.5

Date:

2009/09/23 19:41:22

Author

D. Piparo (danilo.piparo<at>cern.ch), G. Schott - Universitaet Karlsruhe

This class allows to produce plots like the ones of the Tevatron HWG and originally introduced by LEP HWG. It is thought as a "enhanced" TGraph. The input to give to obtain the plot are:

• The number of points
• The values of the parameter on the x axis
• The mean/median of the -2lnQ distribution of the sig+bkg hypothesis
• The mean/median of the -2lnQ distribution of the bkg only hypothesis
• The sigma (error bar size) of the -2lnQ distribution of the bkg only hypothesis
• The experimental values of -2lnQ

Definition at line 41 of file LEPBandPlot.h.

Constructor & Destructor Documentation

LEPBandPlot::LEPBandPlot	(	const char *	name,
		const char *	title,
		const int	n_points,
		double *	x_vals,
		double *	sb_vals,
		double *	b_vals,
		double *	b_rms,
		double *	exp_vals = 0
	)

Constructor.

Definition at line 24 of file LEPBandPlot.cc.

References i, m_b_band_graph_1sigma, m_b_band_graph_2sigma, m_b_line_graph, m_data_line_graph, m_legend, m_sb_line_graph, m_zero_line, and NULL.

                                          :
    StatisticalPlot(name,title,false){

    // bkg hypothesis line
    m_b_line_graph = new TGraph(n_points, x_vals, b_vals);
    m_b_line_graph->SetLineWidth(2);
    m_b_line_graph->SetLineStyle(2);
    m_b_line_graph->SetFillColor(kWhite);


    // bkg hypothesis band 1 sigma
    m_b_band_graph_1sigma = new TGraphErrors(n_points, x_vals, b_vals ,0, b_rms);
    m_b_band_graph_1sigma->SetFillColor(kGreen);
    m_b_band_graph_1sigma->SetLineColor(kGreen);
    m_b_band_graph_1sigma->SetMarkerColor(kGreen);

    // Make the band 2 times wider:
    double* b_2rms = new double[n_points];
    for (int i=0;i<n_points;++i)
        b_2rms[i]=2*b_rms[i];

    // bkg hypothesis band 2 sigma
    m_b_band_graph_2sigma = new TGraphErrors(n_points, x_vals, b_vals ,0, b_2rms);
    m_b_band_graph_2sigma->SetFillColor(kYellow);
    m_b_band_graph_2sigma->SetFillColor(kYellow);
    m_b_band_graph_2sigma->SetLineColor(kYellow);
    m_b_band_graph_2sigma->SetMarkerColor(kYellow);
    m_b_band_graph_2sigma->GetYaxis()->SetTitle("-2lnQ");

    // sig+bkg hypothesis line
    m_sb_line_graph = new TGraph(n_points, x_vals, sb_vals);
    m_sb_line_graph->SetLineWidth(2);
    m_sb_line_graph->SetLineStyle(4);
    m_sb_line_graph->SetLineColor(kRed);
    m_sb_line_graph->SetFillColor(kWhite);

    // The points of the data
    if (exp_vals!=0){
        m_data_line_graph = new TGraph(n_points, x_vals, exp_vals);
        m_data_line_graph->SetLineWidth(2);
        m_data_line_graph->SetFillColor(kWhite);
        }
    else
        m_data_line_graph =NULL;


    // Line for 0
    m_zero_line = new TLine(m_b_line_graph->GetXaxis()->GetXmin(),0,
                            m_b_line_graph->GetXaxis()->GetXmax(),0);

    // The legend 

    m_legend = new TLegend(0.75,0.78,0.98,0.98);
    m_legend->SetName("Confidence Levels");
    m_legend->AddEntry(m_b_band_graph_1sigma,"-2lnQ #pm 1#sigma");
    m_legend->AddEntry(m_b_band_graph_2sigma,"-2lnQ #pm 2#sigma");
    m_legend->AddEntry(m_b_line_graph,"-2lnQ_{B}");
    m_legend->AddEntry(m_sb_line_graph,"-2lnQ_{SB}");
    if (m_data_line_graph!=NULL)
        m_legend->AddEntry(m_data_line_graph,"-2lnQ_{Obs}");

    m_legend->SetFillColor(0);

    delete[] b_2rms;
    }

LEPBandPlot::LEPBandPlot	(	const char *	name,
		const char *	title,
		const int	n_points,
		double *	x_vals,
		double *	sb_vals,
		double *	b_vals,
		double *	b_up_bars1,
		double *	b_down_bars1,
		double *	b_up_bars2,
		double *	b_down_bars2,
		double *	exp_vals = 0
	)

Constructor.

Definition at line 99 of file LEPBandPlot.cc.

References m_b_band_graph_1sigma, m_b_band_graph_2sigma, m_b_line_graph, m_data_line_graph, m_legend, m_sb_line_graph, m_zero_line, and NULL.

                                          :
    StatisticalPlot(name,title,false){

    // bkg hypothesis line
    m_b_line_graph = new TGraph(n_points, x_vals, b_vals);
    m_b_line_graph->SetLineWidth(2);
    m_b_line_graph->SetLineStyle(2);
    m_b_line_graph->SetFillColor(kWhite);



    // bkg hypothesis band 1 sigma
    m_b_band_graph_1sigma = new TGraphAsymmErrors(n_points,
                                                  x_vals,
                                                  b_vals,
                                                  0,
                                                  0,
                                                  b_down_bars1,
                                                  b_up_bars1);
    m_b_band_graph_1sigma->SetFillColor(kGreen);
    m_b_band_graph_1sigma->SetLineColor(kGreen);
    m_b_band_graph_1sigma->SetMarkerColor(kGreen);

    // bkg hypothesis band 2 sigma
    m_b_band_graph_2sigma = new TGraphAsymmErrors(n_points,
                                                  x_vals,
                                                  b_vals,
                                                  0,
                                                  0,
                                                  b_down_bars2,
                                                  b_up_bars2);
    m_b_band_graph_2sigma->SetFillColor(kYellow);
    m_b_band_graph_2sigma->SetFillColor(kYellow);
    m_b_band_graph_2sigma->SetLineColor(kYellow);
    m_b_band_graph_2sigma->SetMarkerColor(kYellow);
    m_b_band_graph_2sigma->GetYaxis()->SetTitle("-2lnQ");

    // sig+bkg hypothesis line
    m_sb_line_graph = new TGraph(n_points, x_vals, sb_vals);
    m_sb_line_graph->SetLineWidth(2);
    m_sb_line_graph->SetLineStyle(4);
    m_sb_line_graph->SetLineColor(kRed);
    m_sb_line_graph->SetFillColor(kWhite);

    // The points of the data
    if (exp_vals!=0){
        m_data_line_graph = new TGraph(n_points, x_vals, exp_vals);
        m_data_line_graph->SetLineWidth(2);
        m_data_line_graph->SetFillColor(kWhite);
        }
    else
        m_data_line_graph =0;

    // Line for 0
    m_zero_line = new TLine(m_b_line_graph->GetXaxis()->GetXmin(),0,
                            m_b_line_graph->GetXaxis()->GetXmax(),0);

    // The legend 

    m_legend = new TLegend(0.75,0.78,0.98,0.98);
    m_legend->SetName("Confidence Levels");
    m_legend->AddEntry(m_b_band_graph_1sigma,"-2lnQ #pm 1#sigma");
    m_legend->AddEntry(m_b_band_graph_2sigma,"-2lnQ #pm 2#sigma");
    m_legend->AddEntry(m_b_line_graph,"-2lnQ_{B}");
    m_legend->AddEntry(m_sb_line_graph,"-2lnQ_{SB}");
    if (m_data_line_graph!=NULL)
        m_legend->AddEntry(m_data_line_graph,"-2lnQ_{Obs}");

    m_legend->SetFillColor(0);
    }

LEPBandPlot::~LEPBandPlot

(

)

Destructor.

Definition at line 182 of file LEPBandPlot.cc.

References m_b_band_graph_1sigma, m_b_band_graph_2sigma, m_b_line_graph, m_data_line_graph, m_legend, m_sb_line_graph, m_zero_line, and NULL.

                         {

    delete m_b_line_graph;
    delete m_sb_line_graph;

    delete m_b_band_graph_1sigma;
    delete m_b_band_graph_2sigma;

    if (m_data_line_graph!=NULL)
        delete m_data_line_graph;

    delete m_zero_line;

    delete m_legend;

    }

Member Function Documentation

void LEPBandPlot::draw ( const char *  options = "" )

virtual

Draw on canvas.

Implements StatisticalPlot.

Definition at line 221 of file LEPBandPlot.cc.

References StatisticalPlot::getCanvas(), m_b_band_graph_1sigma, m_b_band_graph_2sigma, m_b_line_graph, m_data_line_graph, m_legend, m_sb_line_graph, m_zero_line, NULL, and StatisticalPlot::setCanvas().

                                          {

    setCanvas(new TCanvas(GetName(),GetTitle()));
    getCanvas()->cd();

    getCanvas()->SetGridx();
    getCanvas()->SetGridy();

    TString opt(options);
    // Bands
    if (opt.Contains("4")==0){
        m_b_band_graph_2sigma->Draw("A3");
        m_b_band_graph_1sigma->Draw("3");
        }
    else{
        m_b_band_graph_2sigma->Draw("A4");
        m_b_band_graph_1sigma->Draw("4");
        }

    // Lines
    if (opt.Contains("4")==0){
        m_b_line_graph->Draw("L");
        m_sb_line_graph->Draw("L");
    }
    else{
        m_b_line_graph->Draw("C");
        m_sb_line_graph->Draw("C");
    }

    if (m_data_line_graph!=NULL)
        m_data_line_graph->Draw("L");

    m_zero_line->Draw("Same");

    // Legend
    m_legend->Draw("Same");

    }

void LEPBandPlot::dumpToFile ( const char *  RootFileName, const char *  options  )

virtual

All the objects are written to rootfile.

Implements StatisticalPlot.

Definition at line 262 of file LEPBandPlot.cc.

References m_b_band_graph_1sigma, m_b_band_graph_2sigma, m_b_line_graph, m_data_line_graph, m_legend, m_sb_line_graph, and checklumidiff::ofile.

                                                                          {

    TFile ofile(RootFileName,options);
    ofile.cd();

    // Bands
    m_b_band_graph_2sigma->Write("bkg_band_2sigma");
    m_b_band_graph_1sigma->Draw("bkg_band_1sigma");

    // Lines
    m_b_line_graph->Draw("bkg_line");
    m_sb_line_graph->Draw("sigbkg_line");
    if (m_data_line_graph)
        m_data_line_graph->Draw("observed_line");

    // Legend
    m_legend->Draw("IamTheLegend");

    ofile.Close();

    }

void LEPBandPlot::print ( const char *  options = "" )

virtual

Print the relevant information.

Implements StatisticalPlot.

Definition at line 286 of file LEPBandPlot.cc.

References gather_cfg::cout.

                                           {
    std::cout << "\nLEPBandPlot object " << GetName() << ":\n";
    }

void LEPBandPlot::setTitle

(

const char *

title

)

Set the title of the plot.

The title is here set only for the plot of the 2sigma band plot. Indeed its axes will be the only one to be drawn.

Definition at line 215 of file LEPBandPlot.cc.

References m_b_band_graph_2sigma.

                                           {
    m_b_band_graph_2sigma->SetTitle(title);
    }

void LEPBandPlot::setXaxisTitle

(

const char *

title

)

Set the title of the x axis.

The title of the x axis is here set only for the plot of the 2sigma band plot. Indeed its axes will be the only one to be drawn.

Definition at line 205 of file LEPBandPlot.cc.

References m_b_band_graph_2sigma.

                                                {
        m_b_band_graph_2sigma->GetXaxis()->SetTitle(title);
        }

Member Data Documentation

TGraph* LEPBandPlot::m_b_band_graph_1sigma

private

The b band 1 sigma.

Definition at line 95 of file LEPBandPlot.h.

Referenced by draw(), dumpToFile(), LEPBandPlot(), and ~LEPBandPlot().

TGraph* LEPBandPlot::m_b_band_graph_2sigma

private

The b band 2 sigma.

Definition at line 98 of file LEPBandPlot.h.

Referenced by draw(), dumpToFile(), LEPBandPlot(), setTitle(), setXaxisTitle(), and ~LEPBandPlot().

TGraph* LEPBandPlot::m_b_line_graph

private

The b line.

Definition at line 92 of file LEPBandPlot.h.

Referenced by draw(), dumpToFile(), LEPBandPlot(), and ~LEPBandPlot().

TGraph* LEPBandPlot::m_data_line_graph

private

The data line.

Definition at line 89 of file LEPBandPlot.h.

Referenced by draw(), dumpToFile(), LEPBandPlot(), and ~LEPBandPlot().

TLegend* LEPBandPlot::m_legend

private

The legend.

Definition at line 107 of file LEPBandPlot.h.

Referenced by draw(), dumpToFile(), LEPBandPlot(), and ~LEPBandPlot().

TGraph* LEPBandPlot::m_sb_line_graph

private

The sb line.

Definition at line 101 of file LEPBandPlot.h.

Referenced by draw(), dumpToFile(), LEPBandPlot(), and ~LEPBandPlot().

TLine* LEPBandPlot::m_zero_line

private

The line at 0.

Definition at line 104 of file LEPBandPlot.h.

Referenced by draw(), LEPBandPlot(), and ~LEPBandPlot().