[Paraview] Collaboration between "Python Shell" and "Programmable Source Python Script"

[Hal Canary]

On 05/12/2013 07:43 AM, Сергей Дмитриев wrote:
> Hello.
> I make the following data from the "Python Shell" in "Programmable Source"
> In the "Python Shell" I write the following:
>
>    src=ProgrammableSource()
>    src.add_attribute('MyArray',[1,2,3])
>    Show()
>
> In the ProgrammableSource Script I write the following:
>
>    array=self.MyArray
>    print array
>    ######
>
> Result:
>
>    Traceback (most recent call last):
>    File "<string>", line 24, in <module>
>    File "<string>", line 2, in RequestData
>    AttributeError: Array
>
> How to pass an array between the two interpreters?

I would directly insert my array into the source filter.  The following 
example is a ParaView macro:

     script = """
     pdo = self.GetPolyDataOutput()
     newPts = vtk.vtkPoints()
     for x in [(1,1,1),(0,0,1),(0,1,0),(1,0,0)]:
         newPts.InsertNextPoint(x)
     lines = vtk.vtkCellArray()
     for c in [[0,1,2,3,0],[0,2],[1,3]]:
         lines.InsertNextCell(len(c))
         for i in c:
             lines.InsertCellPoint(i)
     pdo.SetLines(lines)
     pdo.SetPoints(newPts)
     assert len(array) == pdo.GetNumberOfPoints()
     varray = vtk.vtkDoubleArray();
     varray.SetName(%r)
     for x in %r:
         varray.InsertNextValue(x)
     pdo.GetPointData().AddArray(varray)
     """
     name = "myarray"
     array = [1,2,3,4]
     src = ProgrammableSource(
          OutputDataSetType='vtkPolyData',
          Script=(script % (name, array)))
     Show(src)