本文整理汇总了C++中TH1F::GetListOfFunctions方法的典型用法代码示例。如果您正苦于以下问题：C++ TH1F::GetListOfFunctions方法的具体用法？C++ TH1F::GetListOfFunctions怎么用？C++ TH1F::GetListOfFunctions使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TH1F的用法示例。
在下文中一共展示了TH1F::GetListOfFunctions方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: fitExclude
void fitExclude() {
//Create a source function
TF1 *f1 = new TF1("f1","[0] +[1]*x +gaus(2)",0,5);
f1->SetParameters(6,-1,5,3,0.2);
// create and fill histogram according to the source function
TH1F *h = new TH1F("h","background + signal",100,0,5);
h->FillRandom("f1",2000);
TF1 *fl = new TF1("fl",fline,0,5,2);
fl->SetParameters(2,-1);
//fit only the linear background excluding the signal area
reject = kTRUE;
h->Fit(fl,"0");
reject = kFALSE;
//store 2 separate functions for visualization
TF1 *fleft = new TF1("fleft",fline,0,2.5,2);
fleft->SetParameters(fl->GetParameters());
h->GetListOfFunctions()->Add(fleft);
gROOT->GetListOfFunctions()->Remove(fleft);
TF1 *fright = new TF1("fright",fline,3.5,5,2);
fright->SetParameters(fl->GetParameters());
h->GetListOfFunctions()->Add(fright);
gROOT->GetListOfFunctions()->Remove(fright);
h->Draw();
}示例2: laserCalibration
//.........这里部分代码省略.........
posxa=5;
posxb=7;
break;
case 1086:
posxa=5;
posxb=5;
break;
case 1087:
posxa=4;
posxb=4;
break;
case 1088:
posxa=3;
posxb=4;
break;
case 1089:
posxa=3;
posxb=3;
break;
default:
posxa=6;
posxb=9;
}
integralP2 = g->Integral (fPositionX2-posxa,fPositionX2+posxb);
/**************************************
* print and update the canvas
**************************************
*/
if(gui==true){
TH1F* gh = g->GetHistogram();
gh->FillN(nbins,g->GetX(),g->GetY());
g->Draw();
TPolyMarker* pm = (TPolyMarker*)gh->GetListOfFunctions()->FindObject("TPolyMarker");
if (pm) {
gh->GetListOfFunctions()->Remove(pm);
delete pm;
}
pm = new TPolyMarker(nfound, px, py);
gh->GetListOfFunctions()->Add(pm);
pm->SetMarkerStyle(23);
pm->SetMarkerColor(kBlue);
pm->SetMarkerSize(1.3);
for (i = 0; i < nbins; i++) d->SetBinContent(i,dest[i]);
d->SetLineColor(kRed);
d->Draw("SAME");
for (i = 0; i < nbins; i++) back->SetBinContent(i,baseline[i]);
back->SetLineColor(kGreen);
back->Draw("SAME");
c1->Update();
}
/**************************************
* Fill tree and peaks data Histogram
**************************************
*/
if(nfound==2)
{
lmPeaks->Fill(integralP2);
outTree->Fill();
}
//printf("time= %d, posx1= %d, posy1= %d\n",time, fPositionX1, fPositionY1);
//printf("time= %d, posx2= %d, posy2= %d\n",time, fPositionX2, fPositionY2);
//for (int i=0;i<nbins;i++) printf("time = %d\n",baseline[i]);
}
}
/**************************************
* switch to the bottom pan and Draw Histogram
**************************************
*/
c1->cd(2);
//lmPeaks->SetAxisRange(TMath::MinElement(entries,binmin),TMath::MaxElement(entries,binmax)+100);
//lmPeaks->SetAxisRange(0,3000);
lmPeaks->Fit("gaus");
integralP2_mean = lmPeaks->GetFunction("gaus")->GetParameter(1);
integralP2_sigma = lmPeaks->GetFunction("gaus")->GetParameter(2);
integralP2_mean_error = lmPeaks->GetFunction("gaus")->GetParError(1);
integralP2_sigma_error = lmPeaks->GetFunction("gaus")->GetParError(2);
//printf("mean = %f\n",integralP2_mean);
//printf("sigma = %f\n",integralP2_sigma);
calibTree->Fill();
lmPeaks->Draw();
c1->Update();
outfile->cd();
gROOT->GetList()->Write();
outTree->Write();
calibTree->Write();
outfile->Close();
}示例3: doCoinc3
//.........这里部分代码省略.........
hDeltaPhiBack12->Fill((Phi1-Phi2)*TMath::RadToDeg());
hThetaRelBack12->Fill(thetarel12);
}
if(TMath::Abs(DeltaT13-corr13) < 500){
hDeltaTheta13->Fill((Theta1-Theta3)*TMath::RadToDeg());
hDeltaPhi13->Fill((Phi1-Phi3)*TMath::RadToDeg());
hThetaRel13->Fill(thetarel13);
}
else if(TMath::Abs(DeltaT13-corr13) > 1000 && TMath::Abs(DeltaT13-corr13) < 6000){
hDeltaThetaBack13->Fill((Theta1-Theta3)*TMath::RadToDeg());
hDeltaPhiBack13->Fill((Phi1-Phi3)*TMath::RadToDeg());
hThetaRelBack13->Fill(thetarel13);
}
}
h->SetStats(0);
hDeltaThetaBack12->Sumw2();
hDeltaPhiBack12->Sumw2();
hThetaRelBack12->Sumw2();
hDeltaThetaBack12->Scale(0.1);
hDeltaPhiBack12->Scale(0.1);
hThetaRelBack12->Scale(0.1);
hDeltaThetaBack13->Sumw2();
hDeltaPhiBack13->Sumw2();
hThetaRelBack13->Sumw2();
hDeltaThetaBack13->Scale(0.1);
hDeltaPhiBack13->Scale(0.1);
hThetaRelBack13->Scale(0.1);
Float_t val,eval;
TCanvas *c1=new TCanvas();
TF1 *ff = new TF1("ff","[0]*[4]/[2]/sqrt(2*TMath::Pi())*TMath::Exp(-(x-[1])*(x-[1])*0.5/[2]/[2]) + [3]*[4]/6/[2]");
ff->SetParName(0,"signal");
ff->SetParName(1,"mean");
ff->SetParName(2,"sigma");
ff->SetParName(3,"background");
ff->SetParName(4,"bin width");
ff->SetParameter(0,42369);
ff->SetParameter(1,0);
ff->SetParLimits(2,10,1000);
ff->SetParameter(2,150); // fix witdh if needed
ff->SetParameter(3,319);
ff->FixParameter(4,20000./nbint); // bin width
ff->SetNpx(1000);
h->Fit(ff);
val = ff->GetParameter(2);
eval = ff->GetParError(2);
printf("significance = %f\n",ff->GetParameter(0)/sqrt(ff->GetParameter(0) + ff->GetParameter(3)));
h->Draw();
TF1 *func1 = (TF1 *) h->GetListOfFunctions()->At(0);
func1->SetLineColor(2);
h->SetLineColor(4);
TPaveText *text = new TPaveText(1500,(h->GetMinimum()+(h->GetMaximum()-h->GetMinimum())*0.6),9500,h->GetMaximum());
text->SetFillColor(0);
sprintf(title,"width = %5.1f #pm %5.1f",func1->GetParameter(2),func1->GetParError(2));
text->AddText(title);
sprintf(title,"signal (S) = %5.1f #pm %5.1f",func1->GetParameter(0),func1->GetParError(0));
text->AddText(title);
sprintf(title,"background (B) (3#sigma) = %5.1f #pm %5.1f",func1->GetParameter(3),func1->GetParError(3));
text->AddText(title);
sprintf(title,"significance (S/#sqrt{S+B}) = %5.1f",func1->GetParameter(0)/sqrt(func1->GetParameter(0)+func1->GetParameter(3)));
text->AddText(title);
text->SetFillStyle(0);
text->SetBorderSize(0);
text->Draw("SAME");
printf("n_day = %f\nn_dayGR = %f\n",nsec*1./86400,nsecGR*1./86400);
text->AddText(Form("rate = %f #pm %f per day",func1->GetParameter(0)*86400/nsecGR,func1->GetParError(0)*86400/nsecGR));
TFile *fo = new TFile("output-SAVO-010203.root","RECREATE");
h->Write();
h2->Write();
hDeltaTheta12->Write();
hDeltaPhi12->Write();
hThetaRel12->Write();
hDeltaThetaBack12->Write();
hDeltaPhiBack12->Write();
hThetaRelBack12->Write();
hDeltaTheta13->Write();
hDeltaPhi13->Write();
hThetaRel13->Write();
hDeltaThetaBack13->Write();
hDeltaPhiBack13->Write();
hThetaRelBack13->Write();
fo->Close();
}示例4: doCoinc
//.........这里部分代码省略.........
hModulationAv->Fit(fmod);
printf("Estimates from time delay: Distance = %f +/- %f m -- Angle = %f +/- %f deg\n",fmod->GetParameter(1),fmod->GetParError(1),fmod->GetParameter(2),fmod->GetParError(2));
h->SetStats(0);
hDeltaThetaBack->Sumw2();
hDeltaPhiBack->Sumw2();
hThetaRelBack->Sumw2();
hDeltaThetaBack->Scale(0.1);
hDeltaPhiBack->Scale(0.1);
hThetaRelBack->Scale(0.1);
hAngleBack->Scale(0.1);
hAngle->Add(hAngleBack,-1);
printf("bin counting: SIGNAL = %f +/- %f\n",hDeltaPhi->Integral()-hDeltaPhiBack->Integral(),sqrt(hDeltaPhi->Integral()));
rate = (hDeltaPhi->Integral()-hDeltaPhiBack->Integral())/nsecGR*86400;
rateErr = sqrt(hDeltaPhi->Integral())/nsecGR*86400;
Float_t val,eval;
TCanvas *c1=new TCanvas();
TF1 *ff = new TF1("ff","[0]*[4]/[2]/sqrt(2*TMath::Pi())*TMath::Exp(-(x-[1])*(x-[1])*0.5/[2]/[2]) + [3]*[4]/6/[2]");
ff->SetParName(0,"signal");
ff->SetParName(1,"mean");
ff->SetParName(2,"sigma");
ff->SetParName(3,"background");
ff->SetParName(4,"bin width");
ff->SetParameter(0,42369);
ff->SetParameter(1,0);
ff->SetParLimits(2,10,maxwidth);
ff->SetParameter(2,350); // fix witdh if needed
ff->SetParameter(3,319);
ff->FixParameter(4,(tmax-tmin)/nbint); // bin width
ff->SetNpx(1000);
if(cout) cout->cd();
h->Fit(ff,"EI","",-10000,10000);
val = ff->GetParameter(2);
eval = ff->GetParError(2);
printf("significance = %f\n",ff->GetParameter(0)/sqrt(ff->GetParameter(0) + ff->GetParameter(3)));
h->Draw();
new TCanvas;
TF1 *func1 = (TF1 *) h->GetListOfFunctions()->At(0);
func1->SetLineColor(2);
h->SetLineColor(4);
TPaveText *text = new TPaveText(1500,(h->GetMinimum()+(h->GetMaximum()-h->GetMinimum())*0.6),9500,h->GetMaximum());
text->SetFillColor(0);
sprintf(title,"width = %5.1f #pm %5.1f",func1->GetParameter(2),func1->GetParError(2));
text->AddText(title);
sprintf(title,"signal (S) = %5.1f #pm %5.1f",func1->GetParameter(0),func1->GetParError(0));
text->AddText(title);
sprintf(title,"background (B) (3#sigma) = %5.1f #pm %5.1f",func1->GetParameter(3),func1->GetParError(3));
text->AddText(title);
sprintf(title,"significance (S/#sqrt{S+B}) = %5.1f",func1->GetParameter(0)/sqrt(func1->GetParameter(0)+func1->GetParameter(3)));
text->AddText(title);
text->SetFillStyle(0);
text->SetBorderSize(0);
text->Draw("SAME");
// correct nsecGR for the event rejected because of the number of satellites (event by event cut)
nsecGR *= neventsGRandSat/neventsGR;
printf("n_day = %f\nn_dayGR = %f\n",nsec*1./86400,nsecGR*1./86400);
text->AddText(Form("rate = %f #pm %f per day",func1->GetParameter(0)*86400/nsecGR,func1->GetParError(0)*86400/nsecGR));
TFile *fo = new TFile("outputCERN-01-02.root","RECREATE");
h->Write();
hDeltaTheta->Write();
hDeltaPhi->Write();
hThetaRel->Write();
hDeltaThetaBack->Write();
hDeltaPhiBack->Write();
hThetaRelBack->Write();
hAngle->Write();
hModulation->Write();
hModulation2->Write();
hModulationAv->Write();
hModulationAvCorr->Write();
hSinTheta->Write();
hSinTheta2->Write();
hnsigpeak->Write();
hRunCut[0]->Write();
hRunCut[1]->Write();
fo->Close();
return nsecGR*1./86400;
}示例5: FitDijetMass_Data
void FitDijetMass_Data() {
TFile *inf = new TFile("MassResults_ak7calo.root");
TH1F *hCorMassDen = (TH1F*) inf->Get("DiJetMass");
hCorMassDen->SetXTitle("Corrected Dijet Mass (GeV)");
hCorMassDen->SetYTitle("Events/GeV");
hCorMassDen->GetYaxis()->SetTitleOffset(1.5);
hCorMassDen->SetMarkerStyle(20);
hCorMassDen->GetXaxis()->SetRangeUser(120.,900.);
gROOT->ProcessLine(".L tdrstyle.C");
setTDRStyle();
tdrStyle->SetErrorX(0.5);
tdrStyle->SetPadRightMargin(0.08);
tdrStyle->SetLegendBorderSize(0);
gStyle->SetOptFit(1111);
tdrStyle->SetOptStat(0);
TCanvas* c2 = new TCanvas("c2","DijetMass", 500, 500);
/////// perform 4 parameters fit
TF1 *func = new TF1("func", "[0]*((1-x/7000.+[3]*(x/7000)^2)^[1])/(x^[2])",
100., 1000.);
func->SetParameter(0, 1.0e+08);
func->SetParameter(1, -1.23);
func->SetParameter(2, 4.13);
func->SetParameter(3, 1.0);
func->SetLineColor(4);
func->SetLineWidth(3);
TVirtualFitter::SetMaxIterations( 10000 );
TVirtualFitter *fitter;
TMatrixDSym* cov_matrix;
int fitStatus = hCorMassDen->Fit("func","LLI","",130.0, 800.0); // QCD fit
TH1F *hFitUncertainty = hCorMassDen->Clone("hFitUncertainty");
hFitUncertainty->SetLineColor(5);
hFitUncertainty->SetFillColor(5);
hFitUncertainty->SetMarkerColor(5);
if (fitStatus == 0) {
fitter = TVirtualFitter::GetFitter();
double* m_elements = fitter->GetCovarianceMatrix();
cov_matrix = new TMatrixDSym( func->GetNumberFreeParameters(),m_elements);
cov_matrix->Print();
double x, y, e;
for(int i=0;i<hFitUncertainty->GetNbinsX();i++)
{
x = hFitUncertainty->GetBinCenter(i+1);
y = func->Eval(x);
e = QCDFitUncertainty( func, *cov_matrix, x);
hFitUncertainty->SetBinContent(i+1,y);
hFitUncertainty->SetBinError(i+1,e);
}
}
hCorMassDen->Draw("ep");
gPad->Update();
TPaveStats *st = (TPaveStats*)hCorMassDen->FindObject("stats");
st->SetName("stats1");
st->SetX1NDC(0.3); //new x start position
st->SetX2NDC(0.6); //new x end position
st->SetTextColor(4);
hCorMassDen->GetListOfFunctions()->Add(st);
/////// perform 2 parameters fit
TF1 *func2 = new TF1("func2", "[0]*(1-x/7000.)/(x^[1])", 100., 1000.);
func2->SetParameter(0, 10000.);
func2->SetParameter(1, 5.0);
func2->SetLineWidth(3);
fitStatus = hCorMassDen->Fit("func2","LLI","",130.0, 800.0); // QCD fit
TH1F *hFitUncertainty2 = hCorMassDen->Clone("hFitUncertainty2");
hFitUncertainty2->SetLineColor(kGray);
hFitUncertainty2->SetFillColor(kGray);
hFitUncertainty2->SetMarkerColor(kGray);
if (fitStatus == 0) {
fitter = TVirtualFitter::GetFitter();
double* m_elements = fitter->GetCovarianceMatrix();
cov_matrix = new TMatrixDSym( func2->GetNumberFreeParameters(),m_elements);
cov_matrix->Print();
double x, y, e;
for(int i=0;i<hFitUncertainty2->GetNbinsX();i++)
{
x = hFitUncertainty2->GetBinCenter(i+1);
y = func2->Eval(x);
e = QCDFitUncertainty( func2, *cov_matrix, x);
hFitUncertainty2->SetBinContent(i+1,y);
hFitUncertainty2->SetBinError(i+1,e);
//.........这里部分代码省略.........
示例6: TSpectrum
//--------------------------------------
//function to calculate sampling factors
std::pair<Double_t,Double_t> g4_sample(int snum, Double_t energy, bool do_pion, bool do_show, bool do_print=false, bool set_val=true){
Sample* sp = sample_map[snum];
if(!sp) { std::cout << "Sample " << snum << " is not loaded." << std::endl; return std::pair<Double_t,Double_t>(0.,0.); }
//select correct file
std::string fpre = sp->fpre;
if(do_pion) fpre += "_pion";
else fpre += "_elec";
//make filenames
std::stringstream drawname, fname, piname;
fname << sp->dir << "/" << fpre << "_" << energy << "gev_10k.root";
if(do_pion) piname << "#pi^{-} " << energy << " GeV";
else piname << "e^{-} " << energy << " GeV";
//open file and tree
TFile* _file;
_file = TFile::Open((fname.str()).c_str());
TTree* totalTree = (TTree*)_file->Get("Total");
//get histo from tree (no display)
//define mip as sam_ecal*ecal < 1 gev = 1000 mev (for pions in HCAL)
if(sp->det==Hcal) drawname << "(hcal+" << sp->zeroWt << "*zero)/1000>>hsam(200)";
else drawname << "(ecal)/1000>>hsam(200)";
totalTree->Draw((drawname.str()).c_str(),"","hist goff");
TH1F* hsam = (TH1F*)gDirectory->Get("hsam");
//use parameters from histo to start fit
TSpectrum* spec = new TSpectrum(5);
spec->Search(hsam,5,"nodraw goff");
Float_t* xpos = spec->GetPositionX();
Float_t* ypos = spec->GetPositionY();
Double_t m = xpos[0];
Double_t me = hsam->GetMeanError();
Double_t N = hsam->GetEntries();
std::stringstream s_mean;
s_mean.precision(3);
Double_t f = energy/m;
Double_t f_err = energy*(me/(m*m));
s_mean << f << " #pm " << f_err;
TPolyMarker* pm = new TPolyMarker(1, xpos, ypos);
hsam->GetListOfFunctions()->Add(pm);
pm->SetMarkerStyle(23);
pm->SetMarkerColor(kRed);
pm->SetMarkerSize(1.3);
std::cout.precision(6);
std::cout << "f_" << (do_pion ? "pion" : "elec") << " = " << f << " +/- " << f_err << std::endl;
//plotting and printing
if (do_show){
TCanvas* can = new TCanvas("sample","sample",700,500);
can->cd();
TPad* pad = new TPad("graph","",0,0,1,1);
pad->SetMargin(0.12,0.05,0.15,0.05);
pad->Draw();
pad->cd();
//formatting
hsam->SetTitle("");
hsam->GetXaxis()->SetTitle("Energy [GeV]");
//hsam->SetStats(kTRUE);
//gStyle->SetOptStat("mr");
hsam->SetLineWidth(2);
hsam->SetLineColor(kBlack);
hsam->GetYaxis()->SetTitleSize(32/(pad->GetWh()*pad->GetAbsHNDC()));
hsam->GetYaxis()->SetLabelSize(28/(pad->GetWh()*pad->GetAbsHNDC()));
hsam->GetXaxis()->SetTitleSize(32/(pad->GetWh()*pad->GetAbsHNDC()));
hsam->GetXaxis()->SetLabelSize(28/(pad->GetWh()*pad->GetAbsHNDC()));
hsam->GetYaxis()->SetTickLength(12/(pad->GetWh()*pad->GetAbsHNDC()));
hsam->GetXaxis()->SetTickLength(12/(pad->GetWh()*pad->GetAbsHNDC()));
hsam->Draw();
std::stringstream Nname;
Nname << "N = " << N;
//determine placing of pave
Double_t xmin;
if (m/((hsam->GetXaxis()->GetXmax() + hsam->GetXaxis()->GetXmin())/2) < 1) xmin = 0.65;
else xmin = 0.2;
//legend
TPaveText *pave = new TPaveText(xmin,0.65,xmin+0.2,0.85,"NDC");
pave->AddText((piname.str()).c_str());
pave->AddText((Nname.str()).c_str());
pave->AddText("Peak sampling factor:");
pave->AddText((s_mean.str()).c_str());
pave->SetFillColor(0);
pave->SetBorderSize(0);
pave->SetTextFont(42);
pave->SetTextSize(0.05);
pave->Draw("same");
if(do_print) {
//.........这里部分代码省略.........
示例7: DrawCalibrationPlotsEB
//.........这里部分代码省略.........
sigma_vs_ieta->GetHistogram()->GetXaxis()-> SetRangeUser(-85,85);
sigma_vs_ieta->GetHistogram()->GetYaxis()-> SetTitle("#sigma_{c}");
sigma_vs_ieta->GetHistogram()->GetXaxis()-> SetTitle("i#eta");
sigma_vs_ieta->Draw("ap");
if (evalStat){
statprecision_vs_ieta->Draw("psame");
sigma_vs_ieta->Draw("psame");
TLegend * leg = new TLegend(0.6,0.7,0.89, 0.89);
leg->SetFillColor(0);
leg->AddEntry(statprecision_vs_ieta,"statistical precision", "LP");
leg->AddEntry(sigma_vs_ieta,"spread", "LP");
leg->Draw("same");
}
// --- plot 2 : scale vs ieta
c[2] = new TCanvas("c_scale_vs_ieta","c_scale_vs_ieta");
c[2]->SetGridx();
c[2]->SetGridy();
scale_vs_ieta->GetHistogram()->GetYaxis()-> SetRangeUser(0.95,1.05);
scale_vs_ieta->GetHistogram()->GetXaxis()-> SetRangeUser(-85,85);
scale_vs_ieta->GetHistogram()->GetYaxis()-> SetTitle("scale");
scale_vs_ieta->GetHistogram()->GetXaxis()-> SetTitle("i#eta");
scale_vs_ieta->Draw("ap");
// --- plot 3 : spread all coefficients
c[3] = new TCanvas("cspread","cspread",500,500);
hspreadall->SetFillStyle(3004);
hspreadall->SetFillColor(kGreen+2);
hspreadall->GetXaxis()-> SetRangeUser(0.8,1.2);
hspreadall->GetXaxis()-> SetTitle("c");
hspreadall->Draw("hs");
gPad->Update();
TPaveStats *s_spread = (TPaveStats*)(hspreadall->GetListOfFunctions()->FindObject("stats"));
s_spread -> SetX1NDC(0.55); //new x start position
s_spread -> SetX2NDC(0.85); //new x end position
s_spread -> SetY1NDC(0.750); //new x start position
s_spread -> SetY2NDC(0.85); //new x end position
s_spread -> SetOptStat(1110);
s_spread -> SetTextColor(kGreen+2);
s_spread -> SetTextSize(0.03);
s_spread -> Draw("sames");
//--- plot 4 : occupancy map
c[4] = new TCanvas("cOcc","cOcc");
c[4]->SetLeftMargin(0.1);
c[4]->SetRightMargin(0.13);
c[4]-> cd();
c[4]->SetGridx();
h_occupancy->GetXaxis()->SetNdivisions(1020);
h_occupancy->GetXaxis() -> SetLabelSize(0.03);
h_occupancy->Draw("COLZ");
h_occupancy->GetXaxis() ->SetTitle("i#phi");
h_occupancy->GetYaxis() ->SetTitle("i#eta");
// --- plot 5 : statistical precision vs ieta
if (evalStat){
c[5] = new TCanvas("cstat","cstat");
c[5]->SetGridx();
c[5]->SetGridy();
statprecision_vs_ieta->GetHistogram()->GetYaxis()-> SetRangeUser(0.0001,0.10);
statprecision_vs_ieta->GetHistogram()->GetXaxis()-> SetRangeUser(-85,85);
statprecision_vs_ieta->GetHistogram()->GetYaxis()-> SetTitle("#sigma((c_{P}-c_{D})/(c_{P}+c_{D}))");
statprecision_vs_ieta->GetHistogram()->GetXaxis()-> SetTitle("i#eta");
statprecision_vs_ieta->Draw("ap");