testShowGraphs.cxx

#include <TTree.h>
#include <TGraph.h>
#include <TFile.h>
#include <TSystem.h>
#include <TCanvas.h>
#include "TStyle.h"

void testShowGraphs()
{
    using std::cout;
    using std::endl;

    gStyle->SetCanvasDefH(900);
    gStyle->SetCanvasDefW(1500);

    const char *foldername = "7_8";
    const char *ext = ".gif";

    //gSystem->Load("../libData.so");

    const Long64_t kFirstEvent = 1;

    //TFile fr("../data/dataTektronix/GSItests/1000V_trigg40mv/30_60_10_50_GSI.root");
    TFile fr("../../NeuRad/oscill/tests/analyze.root");
    TCanvas *c1 = new TCanvas("c1","test",10,10,1000,600);
//  c1->Divide(4,4);
    TTree *tr = (TTree*)fr.Get("cbmsim");

    AEvent *revent = new AEvent(1000);
    tr->SetBranchAddress("Ach1.",&revent);
    Int_t nevents = tr->GetEntries();
    TGraph *gr[16];
     // TGraph *gr;
    // Double_t t10[16];
    // Double_t t90[16];

    //loop over events
    // for (Long64_t i = 0; i <nevents; i++) {

    //  

    //  gr->Draw("AL*");
    //  c1->Update();
    //  delete gr;
        
    // }//for over events

//  for (Int_t k = 0; k < 16; k++){
     { Int_t k=0;
        tr->GetEntry(k+kFirstEvent);
        gr[k] = new TGraph(*revent->GetGraphSignal());
    //  c1->cd(k+1);
        // gr[k]->GetXaxis()->SetRangeUser(130, 175);
        // gr[k]->GetXaxis()->SetTitle("Time [ns]");
        // gr[k]->GetXaxis()->CenterTitle();
        // gr[k]->GetYaxis()->SetTitle("Signal [V]");
        // gr[k]->GetYaxis()->CenterTitle();
        gr[k]->Draw("AL*");
        // cout << t10[k] << "\t" << t90[k] << endl;
        // f1->SetRange(t10[k], t90[k]);
        // gr[k]->Fit(f1, "RQ");
    }
c1->Print("shape.png");
    //c1->Print(Form("../macros/picsDRS4/file%s/signals%s", foldername, ext));
//  c1->cd(2);
//  tr->Draw("gAmp.Draw()","","goff",1,124);
}