    writer = vtkXMLPolyDataWriter()
    writer.SetFileName('Test.vtp')
    writer.SetInputData(polydata)
    writer.Write()


--
        writer = vtkXMLPolyDataWriter()
        writer.SetFileName(vtp_fn)
        writer.SetInputConnection(transform_filter.GetOutputPort())
        writer.SetDataModeToBinary()
        writer.Write()

--
        writer = vtkXMLPolyDataWriter()
        writer.SetFileName(vtp_fn)
        writer.SetInputConnection(transform_filter.GetOutputPort())
        writer.SetDataModeToBinary()
        writer.Write()

--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName(filename)
    writer.SetInputData(polydata)
    writer.Write()


--
    writer = vtkXMLPolyDataWriter()

    # Define all of the variables
    file_prefix = 'Label'
    smoothing_iterations = 15
    pass_band = 0.001
--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName(filename)
    writer.SetInputData(polydata)
    writer.Write()


--
    # writer = vtkXMLPolyDataWriter()
    # writer.SetFileName('Source.vtp')
    # writer.SetInputData(source)
    # writer.SetDataModeToBinary()
    # writer.Write()

--
    # writer = vtkXMLPolyDataWriter()
    # writer.SetFileName('Source.vtp')
    # writer.SetInputData(source)
    # writer.SetDataModeToAscii()
    # writer.Write()

--
    polyDataWriter = vtkXMLPolyDataWriter()
    polyDataWriter.SetInputData(circle)

    polyDataWriter.SetFileName('circle.vtp')
    polyDataWriter.SetCompressorTypeToNone()
    polyDataWriter.SetDataModeToAscii()
--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName(filename)
    writer.SetInputData(polydata)
    writer.Write()


--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName(filename)
    writer.SetInputData(polydata)
    writer.Write()


--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName(filename)
    writer.SetInputData(polydata)
    writer.Write()


--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName(filename)
    writer.SetInputData(polydata)
    writer.Write()


--
    writer = vtkXMLPolyDataWriter()
    writer.SetFileName('pdlut.vtp')
    writer.SetInputData(mapper11.GetInput())
    # This is set so we can see the data in a text editor.
    writer.SetDataModeToAscii()
    writer.Write()
