int RampCorrellation_single(std::string file_name, TGraphErrors &graph, TGraphErrors &graph2, vector<double> &vec_errors)
{
TTree *t = new TTree();
const std::string file_path = "/home/jlab/github/MagCloak_Analysis/calibration/data-calib/DATA_MegaVIEW/";
// std::string file_name = "DataFile_2016-12-08_06-59-11.csv";
std::string file = file_path+file_name;
t->ReadFile(file.c_str());
// t->Print();
TCanvas *c = new TCanvas();
t->Draw("TMath::Abs(B1/B2):time");
TGraph *gh = (TGraph*)c->GetListOfPrimitives()->FindObject("Graph");
double ratio_mean = gh->GetMean(2);
double ratio_std = gh->GetRMS(2);
t->Draw("Bnom:time");
TGraph *gh1 = (TGraph*)c->GetListOfPrimitives()->FindObject("Graph");
double nom_mean = gh1->GetMean(2);
double nom_std = 0;
// cout << "At " << nom_mean << " mT, B1/B2 is: " << ratio_mean << " +/- " << ratio_std << endl;
c->Close();
int n = graph.GetN();
graph.SetPoint(n,nom_mean,ratio_mean);
graph.SetPointError(n,nom_std,ratio_std);
//-------------------------------------------------------------------------------
TCanvas *c2 = new TCanvas();
t->Draw("B3:time");
TGraph *gh2 = (TGraph*)c2->GetListOfPrimitives()->FindObject("Graph");
double B3_mean = -1*(gh2->GetMean(2));
double B3_std = gh2->GetRMS(2);
int n2 = graph2.GetN();
graph2.SetPoint(n2, nom_mean, B3_mean);
graph2.SetPointError(n2, nom_std, B3_std);
c2->Close();
if(nom_mean < 500) vec_errors.push_back(B3_std);
return 0;
}
void fitcorr(){
setTDRStyle();
TFile *f = new TFile("rootfiles/fitresults_2D_data.root");
TTree *t = (TTree*)f->Get("FitResults");
double mt=0, jsf=0, mcmass=0;
t->SetBranchAddress("mt", &mt);
t->SetBranchAddress("jesfactor", &jsf);
t->SetBranchAddress("mcmass", &mcmass);
TH2D *h2D = new TH2D("h2D",";M_{t} [GeV];JSF", 20, 170, 173, 20, 0.99, 1.04 );
TGraph *g = new TGraph();
for( int i=0; i < t->GetEntries(); i++ ){
t->GetEntry(i);
//if( mcmass != 172.5 ) continue;
h2D->Fill(mt, jsf);
g->SetPoint(g->GetN(), mt, jsf);
}
// uncertainty contour
double mean_mt = g->GetMean(1);
double mean_jsf = g->GetMean(2);
double sigma_mt = g->GetRMS(1);
double sigma_jsf = g->GetRMS(2);
double rho = g->GetCorrelationFactor();
std::cout << "Mean Mt = " << mean_mt << " +- " << sigma_mt << std::endl;
std::cout << "Mean JSF = " << mean_jsf << " +- " << sigma_jsf << std::endl;
std::cout << "Correlation = " << rho << std::endl;
TMatrixDSym m(2);
m(0,0) = sigma_mt*sigma_mt;
m(1,1) = sigma_jsf*sigma_jsf;
m(0,1) = rho*sigma_mt*sigma_jsf;
m(1,0) = rho*sigma_mt*sigma_jsf;
TMatrixDSymEigen eigen(m);
TVectorD eigenval = eigen.GetEigenValues();
std::cout << eigenval[0] << " " << eigenval[1] << endl;
// convert to ellipse tilt and radius
//double phi = 0.5*TMath::ATan( (3/0.03)*(2*rho*sigma_mt*sigma_jsf)/(sigma_mt*sigma_mt-sigma_jsf*sigma_jsf) );
double phi = (180.0/TMath::Pi())*0.5*TMath::ATan( (2*rho*sigma_mt*sigma_jsf)/(sigma_mt*sigma_mt-sigma_jsf*sigma_jsf) );
std::cout << "phi = " << phi << std::endl;
TEllipse *el = new TEllipse(mean_mt, mean_jsf, sqrt(eigenval[0]), sqrt(eigenval[1]), 0, 360, phi);
TEllipse *el2 = new TEllipse(mean_mt, mean_jsf, 2*sqrt(eigenval[0]), 2*sqrt(eigenval[1]), 0, 360, phi);
/*
TF2* fell = new TF2("fell","pow((x-[1])*cos([0])+(y-[2])*sin([0]),2)/[3] + pow((x-[1])*sin([0])-(y-[2])*cos([0]),2)/[4]",171,174,0.985,1.015);
fell->SetParameter(0,phi);
fell->SetParameter(1,mean_mt);
fell->SetParameter(2,mean_jsf);
fell->SetParameter(3,eigenval[0]);
fell->SetParameter(4,eigenval[1]);
double cont[1] = {1};
fell->SetContour(1, cont);
*/
const Int_t Number = 2;
Double_t Red[Number] = { 0.90, 0.10};
Double_t Green[Number] = { 0.90, 0.10};
Double_t Blue[Number] = { 0.90, 0.10};
Double_t Stops [Number] = {0, 1};
Double_t Length [Number] = {0, 1};
Int_t nb=50;
TColor::CreateGradientColorTable(Number,Length,Red,Green,Blue,nb);
gStyle->SetPadRightMargin(0.16);
gStyle->SetPadTopMargin(0.08);
TCanvas *c = new TCanvas("c","c",800,600);
h2D->Draw("colzC");
el->SetFillStyle(0);
el->SetLineColor(2);
el->SetLineWidth(3);
el->Draw();
el2->SetFillStyle(0);
el2->SetLineColor(2);
el2->SetLineWidth(3);
el2->Draw();
int iPeriod = 2;
int iPos = 33;
lumi_sqrtS = "8 TeV";
writeExtraText = false;
CMS_lumi( c, iPeriod, iPos );
c->Update();
c->RedrawAxis();
c->GetFrame()->Draw();
TLatex latex;
latex.SetNDC();
latex.SetTextSize(0.06);
latex.SetTextFont(42);
latex.DrawLatex(0.2, 0.84, "2D fit");
c->Print("pdfplots/fitcorr.pdf");
//delete c;
return;
}