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#include "Layout.h"
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#include <sstream>
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#include <TPaveText.h>
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#include <TLatex.h>
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void Layout::DrawInit()
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{
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gStyle->SetCanvasColor(0);
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gStyle->SetCanvasBorderMode(0);
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gStyle->SetCanvasBorderSize(3);
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gStyle->SetPadLeftMargin(0.125);
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gStyle->SetPadBottomMargin(0.12);
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gStyle->SetPadColor(0);
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gStyle->SetPadBorderMode(0);
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gStyle->SetFrameBorderMode(0);
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gStyle->SetFrameBorderSize(0);
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gStyle->SetFrameFillColor(0);
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gStyle->SetOptStat(0);
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gStyle->SetLabelOffset(0.005,"X");
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gStyle->SetLabelSize(0.03,"X");
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gStyle->SetLabelFont(22,"X");
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gStyle->SetTitleOffset(1.1,"X");
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gStyle->SetTitleSize(0.04,"X");
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gStyle->SetTitleFont(22,"X");
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gStyle->SetLabelOffset(0.005,"Y");
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gStyle->SetLabelSize(0.03,"Y");
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gStyle->SetLabelFont(22,"Y");
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gStyle->SetTitleOffset(1.1,"Y");
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gStyle->SetTitleSize(0.04,"Y");
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gStyle->SetTitleFont(22,"Y");
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gStyle->SetStatColor(0);
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gStyle->SetStatBorderSize(0);
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gStyle->SetTextFont(2);
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gStyle->SetTextSize(.05);
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gStyle->SetLegendBorderSize(1);
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gStyle->SetHistLineWidth(2);
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gStyle->SetTitleFillColor(0);
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gStyle->SetTitleFontSize(0.05);
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gStyle->SetTitleBorderSize(0);
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gStyle->SetTitleAlign(13);
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gStyle->SetTextAlign(22);
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//Canvas declaration and configuration
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// TCanvas *c1 = new TCanvas("c1", "plots",200,10,800,600);
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//General ROOT style setup
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gStyle->SetOptDate(0);
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gStyle->SetStatColor(0);
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gStyle->SetTitleColor(1);
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gStyle->SetOptStat(0);
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gStyle->SetPalette(1);
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const Int_t NRGBs = 5;
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const Int_t NCont = 255;
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Double_t stops[NRGBs] = { 0.00, 0.34, 0.61, 0.84, 1.00 };
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Double_t red[NRGBs] = { 0.00, 0.00, 0.87, 1.00, 0.51 };
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Double_t green[NRGBs] = { 0.00, 0.81, 1.00, 0.20, 0.00 };
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Double_t blue[NRGBs] = { 0.51, 1.00, 0.12, 0.00, 0.00 };
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TColor::CreateGradientColorTable(NRGBs, stops, red, green, blue, NCont);
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gStyle->SetNumberContours(NCont);
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}
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void Layout::Draw(const std::vector<HistoBlock>& histos,
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const std::string& xlabel, bool fit, float K, float MU, float SIG)
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{
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std::cout << "----------------- Draw : " << histos[0].histo->GetName() << std::endl;
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// safety
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if (histos.empty()) return;
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// Create a new canvas
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TCanvas* mycanvas = new TCanvas((std::string(histos[0].histo->GetName())+
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"_canvas").c_str(),
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histos[0].histo->GetTitle());
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// SetLineColor
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for (unsigned int i=0;i<histos.size();i++)
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{
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histos[i].histo->SetLineColor( histos[i].linecolor );
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}
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// Stack
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THStack *mystack = new THStack;
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for (unsigned int i=0;i<histos.size();i++)
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{
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mystack->Add( histos[i].histo );
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}
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mystack->Draw("nostack");
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// Axis
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mystack->GetYaxis()->SetTitle("# events");
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mystack->GetXaxis()->SetTitle(xlabel.c_str());
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float xmin = mystack->GetXaxis()->GetXmin();
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float xmax = mystack->GetXaxis()->GetXmin();
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// Draw legend
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TLegend* mylegend = new TLegend(0.40,0.85-(0.04*histos.size()),0.90,0.85);
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mylegend->SetFillColor(0);
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for (unsigned int i=0;i<histos.size();i++)
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{
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mylegend->AddEntry(histos[i].histo,
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histos[i].algoName.c_str(),"l");
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}
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mylegend->Draw();
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if (fit)
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{
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// To Fit
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std::vector<double> sigmas;
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std::vector<double> errors;
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for (unsigned int i=0;i<histos.size();i++)
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{
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TF1* fitter = new TF1(dummy().c_str(),"gaus",xmin,xmax);
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fitter->SetParameter(0,K);
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fitter->SetParameter(1,MU);
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fitter->SetParameter(2,SIG);
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histos[i].histo->Fit(fitter,"0");
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sigmas.push_back(fitter->GetParameter(2));
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errors.push_back(fitter->GetParError(2));
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}
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// Display sigmas
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TPaveText* myblock = new TPaveText(0.65,0.65-(0.04*histos.size()),0.90,0.65,"NDC");
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myblock->SetBorderSize(0);
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myblock->SetFillColor(0);
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for (unsigned int i=0;i<sigmas.size();i++)
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{
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std::stringstream str;
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str << "#sigma_{" << histos[i].shortName <<"} = ";
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str.precision(3); str << sigmas[i];
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str << " #pm ";
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str.precision(3); str << errors[i];
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TText* mytext = myblock->AddText(str.str().c_str());
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mytext->SetTextColor(histos[i].linecolor);
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mytext->SetTextAlign(11);
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}
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myblock->Draw();
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}
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// Save
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std::string filename = GetFileName(histos[0].histo->GetTitle());
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mycanvas->SaveAs((filename+".gif").c_str());
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mycanvas->SaveAs((filename+".root").c_str());
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}
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