2-3. actors

contour surface
contour = vtkContourFilter ()
contour.SetInput (fData)
contour.GenerateValues (2, scalarmin, scalarmax)
normals = vtkPolyDataNormals ()
normals.SetInput (contour.GetOutput ())
contourMapper = vtkPolyDataMapper ()
contourMapper.SetInput (normals.GetOutput())
contourMapper.SetLookupTable (lut)
contourMapper.SetScalarRange (scalarmin, scalarmax)
contourActor = vtkActor ()
contourActor.SetMapper (contourMapper)
contourProp =contourActor.GetProperty ()
contourProp.SetOpacity (.1)

scalar bar
sBarActor = vtkScalarBarActor()
sBarActor.SetLookupTable (lut)
sBarActor.SetTitle ("Vr")
sBarActor.GetPositionCoordinate().SetCoordinateSystemToNormalizedViewport()
sBarActor.SetOrientationToVertical()
sBarActor.SetWidth(0.17)
sBarActor.SetHeight(0.8)

axes
axes = vtkAxes ()
axesMapper = vtkPolyDataMapper ()
axesMapper.SetInput (axes.GetOutput ())
axesActor = vtkActor ()
axesActor.SetMapper (axesMapper)
axesActor.GetProperty ().SetLineWidth (3.0)