本文整理汇总了C++中TNtuple::Scan方法的典型用法代码示例。如果您正苦于以下问题:C++ TNtuple::Scan方法的具体用法?C++ TNtuple::Scan怎么用?C++ TNtuple::Scan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TNtuple
的用法示例。
在下文中一共展示了TNtuple::Scan方法的6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: read18
void read18() {
ifstream in;
in.open("/Users/Yuichi/root/macros/mytext18.txt");
Float_t a,b,c,d,e,k,g,h,i,j;
Int_t nlines = 0;
TFile *f = new TFile("read18.root","RECREATE");
TNtuple *ntuple = new TNtuple("ntuple","data from reading18 file","a:b:c:d:e:k:g:h:i:j");
while (1) {
in >> a >> b >> c >> d >> e >> k >> g >> h >> i >> j;
if (!in.good()) break;
if (nlines < 100) printf("a=%8f, b=%8f, c=%8f, d=%8f, e=%8f, k=%8f, g=%8f, h=%8f, i=%8f, j=%8f\n",a,b,c,d,e,k,g,h,i,j);
ntuple->Fill(a,b,c,d,e,k,g,h,i,j);
nlines++;
}
printf(" found %d points\n",nlines);
ntuple->Scan("a:b:c:d:e:k:g:h:i:j");
in.close();
f->Write();
}
示例2: read21n
void read21n() {
ifstream in;
in.open("/Users/Yuichi/root/macros/mytext21.txt"); //Check
Float_t hm,zm; //Values
Int_t nlines = 0;
TFile *f = new TFile("read21.root","RECREATE"); //Output name
TNtuple *ntuple = new TNtuple("ntuple","data from read20_3 file","hm:zm"); //Values
while (1) {
in >> hm >> zm; //input
if (!in.good()) break;
if (nlines < 100) printf("hm=%8f, zm=%8f\n",hm,zm); //Values
ntuple->Fill(hm,zm); //Fill values
nlines++;
}
printf(" found %d points\n",nlines);
ntuple->Scan("hm:zm"); //Scan Values
in.close();
f->Write();
f->Close();
}
示例3: read25cn
void read25cn() {
ifstream in;
in.open("/Users/Yuichi/root/macros/mytext25c.txt"); //Check
Float_t dRm,dRmbar,dRb,dRbbar; //Values
Int_t nlines = 0;
TFile *f = new TFile("read25c.root","RECREATE"); //Output name
TNtuple *ntuple = new TNtuple("ntuple","data from read25c file","dRm:dRmbar:dRb:dRbbar"); //Values
while (1) {
in >> dRm >> dRmbar >> dRb >> dRbbar; //input
if (!in.good()) break;
if (nlines < 100) printf("dRm=%8f, dRmbar=%8f, dRb=%8f, dRbbar=%8f\n",dRm,dRmbar,dRb,dRbbar); //Values
ntuple->Fill(dRm,dRmbar,dRb,dRbbar); //Fill values
nlines++;
}
printf(" found %d points\n",nlines);
ntuple->Scan("dRm:dRmbar:dRb:dRbbar"); //Scan Values
in.close();
f->Write();
f->Close();
}
示例4: fragmentEnergyDistributionDifferentAngles
void fragmentEnergyDistributionDifferentAngles() {
gStyle->SetOptStat(0000000000); //remove the for this graphs totally redundant statbox
// gROOT->SetStyle("clearRetro");
TString pDepth, fragment, Znum, normToOneAtZeroAngle;
cout << "Enter phantom depth (eg. 27.9, see experimentalData directory for choices): ";
cin >> pDepth;
TString simulationDataPath = "IAEA_" + pDepth + ".root";
TString dir = gSystem->UnixPathName(gInterpreter->GetCurrentMacroName());
dir.ReplaceAll("basic.C","");
dir.ReplaceAll("/./","/");
ifstream in;
in.open(Form("experimentalData/iaeaBenchmark/fragmentEnergySpctra279mmWater0deg.dat",dir.Data()));
Float_t f1,f2,f3, f4,f5,f6;
Int_t nlines = 0;
TFile *f = new TFile("fragmentEnergyWithAngularDistribution.root","RECREATE");
TNtuple *ntuple = new TNtuple("ntuple","Data from ascii file","Energy:He:B:H:Li:Be");
Char_t DATAFLAG[4];
Int_t NDATA;
Char_t n1[6], n2[2], n3[2], n4[2], n5[2], n6[2];
in >> DATAFLAG >> NDATA ; // Read EXFOR line: 'DATA 6'
in >> n1 >> n2 >> n3 >> n4 >> n5 >> n6; // Read column titles: 'Energy He B [...]'
cout <<n1<<" "<<n2<<" "<<n3<<" "<<n4<<" "<<n5<<" "<<n6<<"\n";
while (1) {
in >> f1 >> f2 >> f3 >>f4 >> f5 >> f6;
if (!in.good()) break;
if (nlines < 500 ) printf("%f %0.2f %0.2f %0.2f %0.2f %0.2f \n",f1,f2,f3,f4,f5,f6);
ntuple->Fill(f1,f2,f3,f4,f5,f6);
nlines++;
}
//Let's pull in the simulation-data
TFile *MCData = TFile::Open("IAEA_200000.root");
TNtuple *fragments = (TNtuple*) MCData->Get("fragmentNtuple");
//Block bellow pulls out the simulation's metadata from the metadata ntuple.
TNtuple *metadata = (TNtuple*) MCData->Get("metaData");
Float_t events, detectorDistance,waterThickness,beamEnergy,energyError,phantomCenterDistance;
metadata->SetBranchAddress("events",&events);
metadata->SetBranchAddress("waterThickness",&waterThickness);
metadata->SetBranchAddress("detectorDistance",&detectorDistance);
metadata->SetBranchAddress("beamEnergy",&beamEnergy);
metadata->SetBranchAddress("energyError",&energyError);
metadata->SetBranchAddress("phantomCenterDistance",&phantomCenterDistance);
metadata->GetEntry(0); //there is just one row to consider.
//good to keep for ref. G4 might give weird units due to change.
metadata->Scan();
std::cout << "Recieved metadata-row: " << events << " " << detectorDistance << " " << waterThickness << " " << beamEnergy << " " << energyError << " " << phantomCenterDistance;
//A lot of hardcoded histograms, ugly
Double_t binAmount = 50.0; //casting from int failed somehow, so in float temporarily, fixme
Double_t maxEnergy = 450.0;
Double_t binWidth = maxEnergy / binAmount;
TH1F *hist1 = new TH1F("hist1", "", binAmount, 0.0, maxEnergy);
TH1F *hist2 = new TH1F("hist2", "", binAmount, 0.0, maxEnergy);
TH1F *hist3 = new TH1F("hist3", "", binAmount, 0.0, maxEnergy);
TH1F *hist4 = new TH1F("hist4", "", binAmount, 0.0, maxEnergy);
TH1F *hist5 = new TH1F("hist5", "", binAmount, 0.0, maxEnergy);
TH1F *hist6 = new TH1F("hist6", "", binAmount, 0.0, maxEnergy);
TH1F *hist7 = new TH1F("hist7", "", binAmount, 0.0, maxEnergy);
TH1F *hist8 = new TH1F("hist8", "", binAmount, 0.0, maxEnergy);
TH1F *hist9 = new TH1F("hist9", "", binAmount, 0.0, maxEnergy);
for(int k = 1; k <= 6; k++){
TString Znum = Form("%i", k);
hist1->SetTitle("Z=" + Znum);
//ALL UNITS ARE cm!
Double_t detectorSideLength = 4; //40mm, as e.haettner H1 detector
Double_t scatteringDistance = detectorDistance - phantomCenterDistance; //temporarily hard-coded, should be distance from target-center to detector
Double_t degrees; //< actually radians
Double_t r, rMin, rMax, deltaOmega, normFloat;
TString rMinString, rMaxString, normString;
TString same = "";
TString histName;
TCanvas *c3 = new TCanvas("histograms", "Distribution (at different angles)");
int i = 0; //so that the degree steps can be varied to unevenly spaced values separate counter is used
std::cout << "The following numbers also make it possible to make number of fragments comparison to the graph in A1 of E.Haettner\n";
for(Double_t j = 0.0; j <= 8.0; j=j+1.0){
i++;
degrees = j * TMath::DegToRad();
//std::cout << "plotting for Z = " << Znum << " at " << j << " degrees\n";
//Distance from straight beam at the requested angle
r = scatteringDistance * TMath::Tan(degrees);
//now the "detector is rotated around all possible perpendicularlynangle values to beamline".
//This forms an annulus with rMin and RMax as otuer and inner radiuses
//Notice this will give a bit of approximation at small angles where at 0 degrees this gives a round sensor.
Double_t deltaPhi = TMath::ATan((TMath::Cos(degrees)*detectorSideLength)/(2*scatteringDistance));
rMin = TMath::Max(0.0,r - (detectorSideLength/(2*TMath::Cos(degrees))));
rMax = rMin + ((detectorSideLength*TMath::Sin(degrees))/TMath::Tan((TMath::Pi()/2) - degrees - deltaPhi)) + (detectorSideLength*TMath::Cos(degrees));
rMinString = Form("%f", rMin);
//.........这里部分代码省略.........
示例5: DoTDeriMax1090Correction
void DoTDeriMax1090Correction(TString SpectrumFileInput = "/lustre/miifs05/scratch/him-specf/hyp/steinen/COSYBeamtestAna/COSYnewMogon/June2014/COSYJune2014Dataset11_200,100,0,5339_SR1.root", TString FitFileInput = "/lustre/miifs05/scratch/him-specf/hyp/steinen/COSYBeamtestAna/COSYnewMogon/Fit/FitCOSYJune2014Dataset11_200,100,0,5339_SR1.root")
{
TH2D *hSpectrumTDeriMax1090_EnergyChannel;
TH2D *hSpectrumTDeriMax1090Rel_EnergyChannel;
TH2D *hSpectrumT1090_EnergyChannelCorr1;
TNtuple *DataNTuple;
TFile *SpectrumInput = new TFile(SpectrumFileInput.Data());
hSpectrumTDeriMax1090_EnergyChannel = (TH2D*) SpectrumInput->Get("Histograms/Energy_DeriMaxT90/Energy_DeriMaxT90_01");
hSpectrumTDeriMax1090_EnergyChannel->SetDirectory(0);
hSpectrumTDeriMax1090Rel_EnergyChannel = (TH2D*) SpectrumInput->Get("Histograms/Energy_DeriMaxT90Rel/Energy_DeriMaxT90Rel_01");
hSpectrumTDeriMax1090Rel_EnergyChannel->SetDirectory(0);
hSpectrumT1090_EnergyChannelCorr1 = (TH2D*) SpectrumInput->Get("Histograms/EnergyRt1090/EnergyRt1090CorrectionRt_01");
hSpectrumT1090_EnergyChannelCorr1->SetDirectory(0);
SpectrumInput->Close();
//hSpectrumTDeriMax1090_EnergyChannel->Draw("colz");
TFile *FitInput = new TFile(FitFileInput.Data(),"Update");
DataNTuple = (TNtuple*)FitInput->Get("DataNTuple");
DataNTuple->Scan();
Int_t entries = (Int_t)DataNTuple->GetEntries();
cout<<"Number of Entries: "<<entries<< endl;
const int entriesArrayValue =entries;
TF1 *FitFunc[entriesArrayValue];
float Energy=0;
float ChannelPeakPos=0;
float ChannelRangeMin=0;
float ChannelRangeMax=0;
DataNTuple->SetBranchAddress("Energy",&Energy);
DataNTuple->SetBranchAddress("ChannelPeakPos",&ChannelPeakPos);
DataNTuple->SetBranchAddress("ChannelRangeMin",&ChannelRangeMin);
DataNTuple->SetBranchAddress("ChannelRangeMax",&ChannelRangeMax);
TCanvas* can=new TCanvas();
gPad->SetLogz();
hSpectrumTDeriMax1090_EnergyChannel->GetXaxis()->SetRangeUser(-30,250);
hSpectrumTDeriMax1090Rel_EnergyChannel->GetXaxis()->SetRangeUser(-0.1,0.95);
for (Int_t ki=0;ki<entries;ki++)
{
DataNTuple->GetEntry(ki);
//if (int(Energy) == 1332)
//if (int(Energy) == 510)
//if (ki == entries-1)
{
cout << ChannelRangeMin << " " << ChannelRangeMax << endl;
//first correction via TDeriMaxT90Rel
hSpectrumTDeriMax1090_EnergyChannel->GetYaxis()->SetRangeUser(ChannelRangeMin,ChannelRangeMax);
hSpectrumTDeriMax1090Rel_EnergyChannel->GetYaxis()->SetRangeUser(ChannelRangeMin,ChannelRangeMax);
//TF1* FitFuncSlices = new TF1("FitFuncSlices","gaus(0)+pol0(3)",ChannelRangeMin,ChannelRangeMax);
//FitFuncSlices->SetParameters(1000,ChannelPeakPos-10,4,10);
//FitFuncSlices->SetParLimits(1,ChannelRangeMin,ChannelRangeMax);
//FitFuncSlices->SetParLimits(2,0,10);
//FitFuncSlices->SetParLimits(3,0,100);
//gDirectory->ls();
TH1D *hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually=new TH1D("hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually","",hSpectrumTDeriMax1090Rel_EnergyChannel->GetNbinsX(),-0.3,1.3);
//cout <<hSpectrumTDeriMax1090_EnergyChannel_MaxPos->GetEntries()<< endl;
for(int binX = hSpectrumTDeriMax1090Rel_EnergyChannel->GetXaxis()->FindBin(-0.1);binX <= hSpectrumTDeriMax1090Rel_EnergyChannel->GetXaxis()->FindBin(0.90);binX++)
{
cout << "binx " << binX << endl;
TH1D *hProfileY =hSpectrumTDeriMax1090Rel_EnergyChannel->ProjectionY("_py",binX,binX);
double MaxValue=hProfileY->GetBinCenter(hProfileY->GetMaximumBin());
TF1* FitFuncSlices = new TF1("FitFuncSlices","gaus(0)+[3]",MaxValue-20,MaxValue+20);
TF1* FitFuncGausSlices = new TF1("FitFuncGausSlices","gaus(0)",MaxValue-20,MaxValue+20);
FitFuncGausSlices->SetParameters(hProfileY->GetBinContent(hProfileY->GetMaximumBin()),MaxValue,4);
hProfileY->Fit(FitFuncGausSlices,"RNQ");
FitFuncSlices->SetParameters(FitFuncGausSlices->GetParameter(0),FitFuncGausSlices->GetParameter(1),FitFuncGausSlices->GetParameter(2),10);
FitFuncSlices->SetParLimits(0,0,10000);
FitFuncSlices->SetParLimits(1,MaxValue-10,MaxValue+10);
FitFuncSlices->SetParLimits(2,0,10);
FitFuncSlices->SetParLimits(3,0,100);
hProfileY->Fit(FitFuncSlices,"RNQ");
cout <<MaxValue<<" " << FitFuncSlices->GetParameter(1) << " " << FitFuncSlices->GetParError(1) <<endl;
hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually->SetBinContent(binX, FitFuncSlices->GetParameter(1));
hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually->SetBinError(binX, FitFuncSlices->GetParError(1));
}
hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually->GetYaxis()->SetRangeUser(ChannelPeakPos-100,ChannelPeakPos+50);
hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually->GetXaxis()->SetRangeUser(-0.05,0.9);
TF1 * funcCorrConst = new TF1("funcCorrConst","pol0",-0.03,0.03);
funcCorrConst->SetLineColor(kRed);
TF1 * funcCorrPol = new TF1("funcCorrPol",PolPiecewise,-0.05,0.9,6);
funcCorrPol->SetLineColor(kBlue);
funcCorrPol->SetParameter(0,0.04);
funcCorrPol->SetParameter(1,ChannelPeakPos);
hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually->Fit(funcCorrConst,"R");
hSpectrumTDeriMax1090Rel_EnergyChannel_MaxPosManually->Fit(funcCorrPol,"R+");
//.........这里部分代码省略.........
示例6: fragmentYieldsPlot
//.........这里部分代码省略.........
TString experimentalDataPath = "experimentalData/iaeaBenchmark/yields/TDK" + fragmentName + ".dat";
ifstream in;
//Pull in ascii/exfor-style data
in.open(experimentalDataPath);
Float_t f1,f2;
Int_t nlines = 0;
TFile *f = new TFile("fragmentAngularDistribution.root","RECREATE");
TNtuple *ntuple = new TNtuple("ntuple","Data from ascii file","x:y");
Char_t DATAFLAG[4];
Int_t NDATA;
Char_t n1[15], n2[15];
in >> DATAFLAG >> NDATA ; // Read EXFOR line: 'DATA 6'
in >> n1 >> n2; // Read column titles: 'Energy He B [...]'
cout <<n1<<" "<<n2<<"\n";
while (1) {
in >> f1 >> f2;
if (!in.good()) break;
if (nlines < 500 ) printf("%f %f\n",f1,f2);
ntuple->Fill(f1,f2);
nlines++;
}
std::cout << "Imported " << nlines << " lines from data-file" << endl;
TNtuple *simData = new TNtuple("ntuple","Data from ascii file","depth:H:He:Li:Be:B:C");
// gROOT->SetStyle("clearRetro");
//this will be used as base for pulling the experimental data
TString dir = gSystem->UnixPathName(gInterpreter->GetCurrentMacroName());
dir.ReplaceAll("fragmentAngularDistribution.C","");
dir.ReplaceAll("/./","/");
ifstream in;
simData->Fill(0.0,0.0,0.0,0.0,0.0,0.0,1.0);
for(int j = 1; j <= 40;j=j=j+1){
TString pDepth, fragment, Znum, normToOneAtZeroAngle;
pDepth = Form("%i",j);
/*
cout << "Enter phantom depth (eg. 27.9, see experimentalData directory for choices): ";
cin >> pDepth;
*/
TString simulationDataPath = "IAEA_" + pDepth + ".root";
//Let's pull in the simulation-data
//TFile *MCData = TFile::Open("IAEA_" + pDepth + ".root");
TFile *MCData = TFile::Open(simulationDataPath);
TNtuple *fragments = (TNtuple*) MCData->Get("fragmentNtuple");
//Block bellow pulls out the simulation's metadata from the metadata ntuple.
TNtuple *metadata = (TNtuple*) MCData->Get("metaData");
Float_t events, detectorDistance,waterThickness,beamEnergy,energyError,phantomCenterDistance;
metadata->SetBranchAddress("events",&events);
metadata->SetBranchAddress("waterThickness",&waterThickness);
metadata->SetBranchAddress("detectorDistance",&detectorDistance);
metadata->SetBranchAddress("beamEnergy",&beamEnergy);
metadata->SetBranchAddress("energyError",&energyError);
metadata->SetBranchAddress("phantomCenterDistance",&phantomCenterDistance);
metadata->GetEntry(0); //there is just one row to consider.
//ALL UNITS ARE cm!
Double_t scatteringDistance = detectorDistance - phantomCenterDistance; //temporarily hard-coded, should be distance from target-center to detector
Double_t degrees = 10.0;
Double_t r, rMin, rMax, graphMaximum = 0.0;
Double_t norming = events*.999;
TString rMinString;
TString rMaxString;
rMinString = "0.00";
rMaxString = Form("%f", scatteringDistance*TMath::ATan(degrees*TMath::DegToRad()));
Double_t H = ((Double_t*) fragments->GetEntries("(Z == " + TString::Format("%i",1) + " && sqrt(posY^2 + posZ^2) < " + rMaxString + "&& sqrt(posY*posY + posZ*posZ) > " + rMinString + ")")) / norming;
Double_t He = ((Double_t*) fragments->GetEntries("(Z == " + TString::Format("%i",2) + " && sqrt(posY^2 + posZ^2) < " + rMaxString + "&& sqrt(posY*posY + posZ*posZ) > " + rMinString + ")")) / norming;
Double_t Li = ((Double_t*) fragments->GetEntries("(Z == " + TString::Format("%i",3) + " && sqrt(posY^2 + posZ^2) < " + rMaxString + "&& sqrt(posY*posY + posZ*posZ) > " + rMinString + ")")) / norming;
Double_t Be = ((Double_t*) fragments->GetEntries("(Z == " + TString::Format("%i",4) + " && sqrt(posY^2 + posZ^2) < " + rMaxString + "&& sqrt(posY*posY + posZ*posZ) > " + rMinString + ")")) / norming;
Double_t B = ((Double_t*) fragments->GetEntries("(Z == " + TString::Format("%i",5) + " && sqrt(posY^2 + posZ^2) < " + rMaxString + "&& sqrt(posY*posY + posZ*posZ) > " + rMinString + ")")) / norming;
Double_t C = ((Double_t*) fragments->GetEntries("(Z == " + TString::Format("%i",6) + " && sqrt(posY^2 + posZ^2) < " + rMaxString + "&& sqrt(posY*posY + posZ*posZ) > " + rMinString + ")")) / norming;
simData->Fill(waterThickness,H,He,Li,Be,B,C);
}
simData->Scan();
simData->SetMarkerStyle(2); //filled dot
simData->SetMarkerColor(kBlue);
graphMaximum = TMath::Max(graphMaximum, simData->GetMaximum(fragmentName));
graphMaximum = TMath::Max(graphMaximum, ntuple->GetMaximum("y"));
dummyHisto->SetMaximum(graphMaximum + .05*graphMaximum);
dummyHisto->Draw();
simData->Draw(fragmentName + ":depth","","p,same");
ntuple->SetMarkerStyle(22); //triangle
ntuple->SetMarkerColor(kRed);
ntuple->Draw("y:x","","p,same");
c1->SaveAs("fragmentYieldsFor" + fragmentName + ".png");
}