[Paraview] Python View + Matplotlib

[Jayaprakash, Arvind]

Dear All,

I am interested in using the matplotlib library to plot the data filtered through "PlotOverLine" filter.  I believe this is of type vtkMultiBlockDataSet with 1 child (vtkPolyData)

I am having issues with  SetAttributeArrayStatus(...)  for an array in vtkMultiBlockDataSet.

Here is the script, I used:

def setup_data(view):
  from paraview.numpy_support import vtk_to_numpy
  for i in xrange(view.GetNumberOfVisibleDataObjects()):
    dataObject = view.GetVisibleDataObjectForSetup(i).GetBlock(0)   #Accessing the point data
    pressure = dataObject.GetPointData().GetArray("p")
    print vtk_to_numpy(pressure)  # prints the pressure array
    view.DisableAllAttributeArrays()
    view.SetAttributeArrayStatus(i, vtkDataObject.POINT, "p", 1)  # code breaks here! Could not pass the vtkDataObject.POINT array

def render(view, width, height):
  from paraview.numpy_support import vtk_to_numpy
  from paraview import python_view
  figure = python_view.matplotlib_figure(width, height)
  for i in xrange(view.GetNumberOfVisibleDataObjects()):
    dataObject = view.GetVisibleDataObjectForRendering(i) .GetBlock(0)
    pressure = dataObject.GetPointData().GetArray("p")
    print vtk_to_numpy(pressure)

Any help is much appreciated.
Thanks,
Jay
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