C++ TGraph2D::GetXaxis方法代码示例

//g++ allDataPrint.cpp `root-config --cflags --glibs`
int main(int argc, char** argv)
#endif
{
  TCanvas c3("c3","Grafico",640,512);
  TCanvas c1("c1","Confronto",1280,512);
  c1.Divide(2,1);
  
  preparedraw myData (argv[1],
		      // preparedraw::doMax |
		      preparedraw::doFh |
		      preparedraw::doSh |
		      preparedraw::doErr);
  
  TGraph2D *g = myData.data();
  TGraph *gb = myData.firsthalf();//before
  TGraph *ga = myData.secondhalf();//after
  TGraph *gerrs = myData.errs();
  //  TGraph *maxs = myData.maximum();
  
  c3.cd();
  g->GetXaxis()->SetTitle("X");
  g->GetYaxis()->SetTitle("T");
  //g->Draw("cont1");
  g->Draw("pcol");
  //g->Draw();
  //grafo.Draw("surf1");

  cout<<"Disegno i grafici\n";
  TMultiGraph *mg = new TMultiGraph("integrali","Integrali prima e dopo la barriera");
  
  ga->SetLineColor(2);
  mg->Add(gb);
  mg->Add(ga);
  c1.cd(1);
  mg->Draw("apl");
    

  gerrs->SetTitle("Andamento degli errori");
  c1.cd(2);
  gerrs->Draw("apl");
#ifndef __CINT__
  theApp.Run(true);
  return 0;
#endif
}

int w1() {

	TCanvas *c = new TCanvas("c1", "", 0, 0, 700, 600);
	TGraph2D *dt = new TGraph2D();

	ifstream in("/opt/workspace-cpp/simulation/result_rand3.csv");

	string buff;

	getline(in, buff);

	int meanResidenceTime;
	int products;
	float lastProductPrice;
	float shopIncome;

	int n = 0;
	while (getline(in, buff)) {
			for (unsigned int i = 0; i < buff.size(); i++) {
				if (buff[i] == ';') {
					buff[i] = ' ';
				}
			}
			stringstream ss(buff);
			ss >> meanResidenceTime;
			ss >> products;
			ss >> lastProductPrice;
			ss >> shopIncome;
			dt->SetPoint(n, products, meanResidenceTime, shopIncome);
			n++;
	}
	gStyle->SetPalette(1);
	dt->SetTitle("Zaleznosc zysku od liczby produktow oraz czasu przebywania w sklepie");
	dt->GetXaxis()->SetTitle("Liczba produktow");
	dt->GetYaxis()->SetTitle("Sredni czas przebywania w sklepie");
	dt->GetZaxis()->SetTitle("Dochod");
	dt->Draw("surf1");
}

void view_SMEvents_3D_from_Hits() {
	/*** Displays an 3D occupancy plot for each SM Event. (stop mode event)

	Can choose which SM event to start at. (find "CHOOSE THIS" in this script)
	Input file must be a Hits file (_interpreted_Hits.root file).
	***/
	gROOT->Reset();

	// Setting up file, treereader, histogram
	TFile *f = new TFile("/home/pixel/pybar/tags/2.0.2_new/pyBAR-master/pybar/module_202_new/101_module_202_new_stop_mode_ext_trigger_scan_interpreted_Hits.root");


	if (!f) { // if we cannot open the file, print an error message and return immediately
		cout << "Error: cannot open the root file!\n";
		//return;
	}

	TTreeReader *reader = new TTreeReader("Table", f);

	TTreeReaderValue<UInt_t> h5_file_num(*reader, "h5_file_num");
	TTreeReaderValue<Long64_t> event_number(*reader, "event_number");
	TTreeReaderValue<UChar_t> tot(*reader, "tot");
	TTreeReaderValue<UChar_t> relative_BCID(*reader, "relative_BCID");
	TTreeReaderValue<Long64_t> SM_event_num(*reader, "SM_event_num");
	TTreeReaderValue<Double_t> x(*reader, "x");
	TTreeReaderValue<Double_t> y(*reader, "y");
	TTreeReaderValue<Double_t> z(*reader, "z");

	// Initialize the canvas and graph
	TCanvas *c1 = new TCanvas("c1","3D Occupancy for Specified SM Event", 1000, 10, 900, 550);
	c1->SetRightMargin(0.25);
	TGraph2D *graph = new TGraph2D();

	// Variables used to loop the main loop
	bool endOfReader = false; // if reached end of the reader
	bool quit = false; // if pressed q
	int smEventNum = 1; // the current SM-event CHOOSE THIS to start at desired SM event number
	
	// Main Loop (loops for every smEventNum)
	while (!endOfReader && !quit) {
		// Variables used in this main loop
		int startEntryNum = 0;
		int endEntryNum = 0;
		string histTitle = "3D Occupancy for SM Event ";
		string inString = "";
		bool fitFailed = false; // true if the 3D fit failed
		bool lastEvent = false;

		// Declaring some important output values for the current graph and/or line fit
		int numEntries = 0;
		double sumSquares = 0;

		// Get startEntryNum and endEntryNum
		startEntryNum = getEntryNumWithSMEventNum(reader, smEventNum);
		endEntryNum = getEntryNumWithSMEventNum(reader, smEventNum + 1);

		if (startEntryNum == -2) { // can't find the smEventNum
			cout << "Error: There should not be any SM event numbers that are missing." << "\n";
		} else if (startEntryNum == -3) { 
			endOfReader = true;
			break;
		} else if (endEntryNum == -3) { // assuming no SM event nums are skipped
			endEntryNum = reader->GetEntries(false);
			lastEvent = true;
		}

		// Fill TGraph with points and set title and axes
		graph = new TGraph2D(); // create a new TGraph to refresh

		reader->SetEntry(startEntryNum);
		for (int i = 0; i < endEntryNum - startEntryNum; i++) {
			graph->SetPoint(i, (*x - 0.001), (*y + 0.001), (*z - 0.001));
			endOfReader = !(reader->Next());
		}

		histTitle.append(to_string(smEventNum));
		graph->SetTitle(histTitle.c_str());
		graph->GetXaxis()->SetTitle("x (mm)");
		graph->GetYaxis()->SetTitle("y (mm)");
		graph->GetZaxis()->SetTitle("z (mm)");

		graph->GetXaxis()->SetLimits(0, 20); // ROOT is buggy, x and y use setlimits()
		graph->GetYaxis()->SetLimits(-16.8, 0); // but z uses setrangeuser()
		graph->GetZaxis()->SetRangeUser(0, 40.96);
		c1->SetTitle(histTitle.c_str());

		// 3D Fit, display results, draw graph and line fit, only accept "good" events, get input
		if (!endOfReader || lastEvent) {
			// Display some results
			numEntries = graph->GetN();
			cout << "Current SM Event Number: " << smEventNum << "\n";
			cout << "Number of entries:       " << numEntries << "\n";

			// Starting the fit. First, get decent starting parameters for the fit - do two 2D fits (one for x vs z, one for y vs z)
			TGraph *graphZX = new TGraph();
			TGraph *graphZY = new TGraph();
			reader->SetEntry(startEntryNum);
			for (int i = 0; i < endEntryNum - startEntryNum; i++) {
				graphZX->SetPoint(i, (*z - 0.001), (*x + 0.001));
				graphZY->SetPoint(i, (*z - 0.001), (*y + 0.001));
//.........这里部分代码省略.........

void PlotSVMopt(){

 //  // TString FileData = "SVMoptData.dat";
//   TFile *f = new TFile("SVMoptTree.root","RECREATE");
//   TTree *T = new TTree("SVMoptTree","data from ascii file");
//   Long64_t nlines = T->ReadFile("SVMoptData.dat","Gamma:C:ROCint:SigAt1Bkg_test:SigAt1Bkg_train");
//   printf(" found %lld pointsn",nlines);
//   T->Write();

// TGraph2D *grROCint = new TGraph2D();
//  for(int i=0;i<nlines;i++){

//    grROCint->SetPoint(i,);
//  }

  TGraph2D *grROCint = new TGraph2D();
  

TGraph2D *grSigAt1Bkg_test = new TGraph2D();
TGraph2D *grOverTrain = new TGraph2D();

 TString dir = gSystem->UnixPathName(__FILE__);
 dir.ReplaceAll("PlotSVMopt.C","");
 dir.ReplaceAll("/./","/");
 ifstream in;
 // in.open(Form("%sSVMoptData.dat",dir.Data()));
 in.open(Form("%sSVMoptData_NEW2.dat",dir.Data()));

 Float_t Gamma,C,ROCint, SigAt1Bkg_test, SigAt1Bkg_train;
 Int_t nlines = 0;
 while (1) {
   in >> Gamma >> C >> ROCint >> SigAt1Bkg_test >> SigAt1Bkg_train;
   if (!in.good()) break;
   // if (in.good()){
      if (nlines < 5) printf("Gamma=%8f, C=%8f, ROCint=%8f\n",Gamma, C, ROCint);
      grROCint->SetPoint(nlines,Gamma,C,ROCint);
      grSigAt1Bkg_test->SetPoint(nlines,Gamma,C,SigAt1Bkg_test);
      grOverTrain->SetPoint(nlines,Gamma,C,fabs(SigAt1Bkg_train-SigAt1Bkg_test));
      nlines++;
      //   }
   }
   printf(" found %d points\n",nlines);
   in.close();
   TCanvas *cSVMopt = new TCanvas("cSVMopt","SVM model choice",600,600);
   cSVMopt->Divide(2,2);
   cSVMopt->cd(1);
   cSVMopt_1->SetLogx();
   cSVMopt_1->SetLogy();
   grROCint->GetXaxis()->SetLabelSize(0.04);
   grROCint->GetYaxis()->SetLabelSize(0.04);
   grROCint->GetZaxis()->SetLabelSize(0.04);
   grROCint->GetXaxis()->SetTitle("#gamma");
   grROCint->GetYaxis()->SetTitle("C");
   grROCint->GetZaxis()->SetTitle("ROC integral");
   grROCint->SetTitle("ROC integral");
   grROCint->SetMaximum(1.0);
   grROCint->SetMinimum(0.9);
   grROCint->Draw("COLZ");
   cSVMopt->cd(2);
   cSVMopt_2->SetLogx();
   cSVMopt_2->SetLogy();
   grSigAt1Bkg_test->SetTitle("Signal at 1% Bkg level (test)");
   //   grSigAt1Bkg_test->Draw("surf1");
   grSigAt1Bkg_test->Draw("COLZ");
   cSVMopt->cd(3);
   cSVMopt_3->SetLogx();
   cSVMopt_3->SetLogy();
   grOverTrain->SetTitle("Overtraining");
   grOverTrain->Draw("COLZ");
   //cSVMopt->SaveAs("SVMoptC1.root");
}