# PlotLegacyMethod

VTKExamples/Cxx/WishList/Plotting/PlotLegacyMethod

### Code

PlotLegacyMethod.cxx

    #include <vtkSphereSource.h>
    #include <vtkMath.h>
    #include <vtkDoubleArray.h>
    #include <vtkFieldData.h>
    #include <vtkPolyData.h>
    #include <vtkSmartPointer.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkActor.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindowInteractor.h>
    #include <vtkXYPlotActor.h>

    int main(int, char *[])
    {
      vtkSmartPointer<vtkXYPlotActor> plot =
          vtkSmartPointer<vtkXYPlotActor>::New();
      plot->ExchangeAxesOff();
      plot->SetLabelFormat( "%g" );
      plot->SetXTitle( "Level" );
      plot->SetYTitle( "Frequency" );
      plot->SetXValuesToIndex();

      for (unsigned int i = 0 ; i < 2 ; i++)
      {
        vtkSmartPointer<vtkDoubleArray> array_s =
            vtkSmartPointer<vtkDoubleArray>::New();
        vtkSmartPointer<vtkFieldData> field =
            vtkSmartPointer<vtkFieldData>::New();
        vtkSmartPointer<vtkDataObject> data =
            vtkSmartPointer<vtkDataObject>::New();

        for (int b = 0; b < 30; b++)   /// Assuming an array of 30 elements
        {
          double val = vtkMath::Random(0.0,2.0);
          array_s->InsertValue(b,val);
        }
        field->AddArray(array_s);
        data->SetFieldData(field);
        plot->AddDataObjectInput(data);
      }

      plot->SetPlotColor(0,1,0,0);
      plot->SetPlotColor(1,0,1,0);

      vtkSmartPointer<vtkRenderer> renderer =
          vtkSmartPointer<vtkRenderer>::New();
      renderer->AddActor(plot);

      vtkSmartPointer<vtkRenderWindow> renderWindow =
          vtkSmartPointer<vtkRenderWindow>::New();
      renderWindow->AddRenderer( renderer );
      renderWindow->SetSize(500,500);

      vtkSmartPointer<vtkRenderWindowInteractor> interactor =
          vtkSmartPointer<vtkRenderWindowInteractor>::New();
      interactor->SetRenderWindow( renderWindow );

      // Initialize the event loop and then start it
      interactor->Initialize();
      interactor->Start();

      return EXIT_SUCCESS;
    }

### CMakeLists.txt

    cmake_minimum_required(VERSION 2.8)

    PROJECT(PlotLegacyMethod)

    find_package(VTK REQUIRED)
    include(${VTK_USE_FILE})

    add_executable(PlotLegacyMethod MACOSX_BUNDLE PlotLegacyMethod.cxx)

    target_link_libraries(PlotLegacyMethod ${VTK_LIBRARIES})

### Download and Build PlotLegacyMethod

Click here to download PlotLegacyMethod and its CMakeLists.txt file. Once the tarball PlotLegacyMethod.tar has been downloaded and extracted,

    cd PlotLegacyMethod/build

If VTK is installed:

    cmake ..

If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:

    cmake -DVTK_DIR:PATH=/home/me/vtk_build ..

Build the project:

    make

and run it:

    ./PlotLegacyMethod

WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.