[vtkusers] vtkXdmfReader

[Nico Schlömer]

Thanks for the clarification!

Cheers,
Nico

On Sun, Dec 13, 2015 at 11:57 PM David E DeMarle <dave.demarle at kitware.com>
wrote:

> Some vtkAlgorithms produce more than one thing and you use the port to
> specify which thing you want. An example being vtkGaussianCube reader
> (molecule = port0, field = port 1).
>
> This reader does not so 0 is what you want.
>
> hth
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Sun, Dec 13, 2015 at 5:40 PM, Nico Schlömer <nico.schloemer at gmail.com>
> wrote:
>
>> Thanks for the reply!
>> `GetOutputDataObject` takes a `port` as input argument, and putting `0`
>> seems to work, but I don't actually know what I'm doing. Any more hints
>> here?
>>
>> Cheers,
>> Nico
>>
>> On Sun, Dec 13, 2015 at 2:55 PM David E DeMarle <dave.demarle at kitware.com>
>> wrote:
>>
>>> The reader will produce different types of data dependent on the file it
>>> reads, so you need to use GetOutputDataObject instead and cast
>>> appropriately.
>>>
>>>
>>>
>>> David E DeMarle
>>> Kitware, Inc.
>>> R&D Engineer
>>> 21 Corporate Drive
>>> Clifton Park, NY 12065-8662
>>> Phone: 518-881-4909
>>>
>>> On Sun, Dec 13, 2015 at 7:36 AM, Nico Schlömer <nico.schloemer at gmail.com
>>> > wrote:
>>>
>>>> Hi everyone,
>>>>
>>>> I've been using the `vtkUnstructuredGridReader` and the
>>>> `vtkXMLUnstructuredGridReader` for a while now to read VTK/VTU meshes, e.g.,
>>>> ```
>>>>         reader = vtk.vtkUnstructuredGridReader()
>>>>         reader.SetFileName(filename)
>>>>         reader.Update()
>>>>         vtk_mesh = reader.GetOutput()
>>>> ```
>>>> and then
>>>> ```
>>>>     points = vtk.util.numpy_support.vtk_to_numpy(
>>>>             vtk_mesh.GetPoints().GetData()
>>>>             )
>>>> ```
>>>> etc. From the documentation, it seemed easy enough to phase in the
>>>> `vtkXdmfReader`. However,
>>>> ```
>>>> AttributeError: 'vtkIOXdmf2Python.vtkXdmfReader' object has no
>>>> attribute 'GetOutput'
>>>> ```
>>>> Any hints on how to use the `vtkXdmfReader`?
>>>>
>>>> Cheers,
>>>> Nico
>>>>
>>>> [1] http://www.vtk.org/doc/nightly/html/classvtkXdmfReader.html
>>>>
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>
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