C++ (Cpp) TGraph2DErrors::Clone Examples

Example #1

File: VisualizeRegionIntegratedSurface.cpp Project: jrtomps/phdwork

TGraph2DErrors* GetGraph(std::string fname)
{
    TGraph2DErrors* gr = 0;

    std::string fGrName = "mygraph";

    TFile *f = new TFile(fname.data());
    if (!f->IsOpen())
    {
        std::cerr << "Failed to open " << fname << std::endl;
        return gr;
    }

    f->ls();

    std::cout << "Enter name of graph : ";
    if (std::cin.peek()=='\n') std::cin.get();
    std::getline(std::cin, fGrName);

    f->GetObject(fGrName.data(), gr);
    if (gr!=NULL)
    {

        TGraph2DErrors* tgr = (TGraph2DErrors*) gr->Clone("mygraph_0");
        gr=tgr;
        gr->SetDirectory(0);
    }

    return gr;
}