[Paraview] Resample with dataset.

[Berk Geveci]

If you start weird things happening (like filters executing when they
shouldn't), don't say I didn't warn you :-)

On Fri, Mar 13, 2009 at 3:05 PM, Jacques Papper
<jacques.papper at gmail.com> wrote:
> Hi Berk,
> Thanks for the heads up, I noticed that I was renaming the input as well,
> but in some ways that's exactly what I want.
> So if that's the only "problem" then I think I'll live with it until this
> other layer appears !
> Thanks !
> Jacques
>
> 2009/3/12 Berk Geveci <berk.geveci at kitware.com>
>>
>> Unfortunately, this is not the correct way of doing it. You are
>> changing the name of the output array which happens to also be the
>> input array (thanks to CopyAttributes). Changing your input in a
>> filter is a no no in VTK. You have to deep copy the attributes if you
>> want to do this. In the future, I think we will create another level
>> of indirection such that it will be possible to shallow copy the
>> contents of arrays (i.e. the pointer) for the purpose of renaming (and
>> else).
>>
>> -berk
>>
>> On Sun, Mar 8, 2009 at 7:50 AM, Jacques Papper <jpapper at ara.co.uk> wrote:
>> >  Hi all, I made a quick modification to the vtkProbeFilter.cxx to pass
>> > the
>> > input data as well as the interpolated data to the output. This is so I
>> > can
>> > calculate deltas between two configurations without having to use a
>> > python
>> > programmable filter. Could you tell me if you think this modification is
>> > the
>> > right way of doing what I want? (It seems to work, but I'm not
>> > absolutely
>> > sure this is a correct way of doing things.)
>> >
>> >
>> >
>> >
>> >  // First, copy the input to the output as a starting point
>> >  output->CopyStructure(input);
>> >  output->CopyAttributes(input); //<JP - copies input data as well
>> >
>> >  vtkPointData* outPD;
>> >
>> >  outPD = output->GetPointData();
>> >
>> >  // Change name of input data
>> >  int numArrays  = outPD->GetNumberOfArrays();
>> >  for(int i = 0 ; i < numArrays; ++i){
>> >    vtkAbstractArray * absar = outPD->GetAbstractArray(i);
>> >    absar->SetName(strcat(absar->GetName(),"_original"));
>> >  }
>> >
>> > Jacques PAPPER
>> > Applied CFD Team Leader
>> > Tel: +44 (0) 1234 324677
>> >
>> >
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