[vtkusers] Choosing time for vtkOpenFOAMReader

[Timofey Mukha]

Dear David,

Thank you for the fast reply! I am trying to use your tip, but since I 
am very new to VTK it is not working out well for me.

Could you elaborate a bit, what would "anAlgorithm" be. A child to 
vtkAlgorithm? The thing is none of the objects I create seem to have the 
SetUpdateTimeStep() as a member. Browsing doxygen made me think that it 
is a member of vtkStreamingDemandDrivenPipeline, is that something I 
should have in the script?

Kind regards,

Timofey


On 2016-11-02 18:40, David E DeMarle wrote:
> In vtk 6.3 it was:
> anAlgorithm->UpdateInformation();
> anAlgorithm->SetUpdateTimeStep(0.5);
> anAlgorithm->Update();
> Try that.
>
> In vtk 7.1 it is:
> anAlgorithm->UpdateTimeSep(0.5);
> Since Berk cleaned up the parts of the pipeline that caused issues 
> like you are seeing.
>
>
>
> David E DeMarle
> Kitware, Inc.
> R&D Engineer
> 21 Corporate Drive
> Clifton Park, NY 12065-8662
> Phone: 518-881-4909
>
> On Wed, Nov 2, 2016 at 12:43 PM, Timofey Mukha <timofey.mukha at it.uu.se 
> <mailto:timofey.mukha at it.uu.se>> wrote:
>
>     Hello!
>
>     I am trying to write a python script for doing some stuff with an
>     OpenFOAM case. Everything works great, except that I can't choose
>     the time-value that I want the reader to get the data for.
>
>     I have found the SetTimeValue() function which is supposed to do
>     the job I think, but it doesn't -- the first availbale time-value
>     is always used. Here is how I use the reader:
>
>     reader = vtk.vtkOpenFOAMReader()
>     reader.SetFileName(path)
>     reader.CreateCellToPointOff()
>     reader.DisableAllPointArrays()
>     reader.Update()
>     print(vtk_to_numpy(reader.GetTimeValues())) # Grab the available
>     timesteps
>     reader.SetTimeValue(vtk_to_numpy(reader.GetTimeValues())[-1]) #
>     Try to load the latest time
>     reader.Update()
>
>     I use the version provided by the Anaconda python disstro, 6.3.0 I
>     believe.
>
>     Thanks in advance,
>
>     Timofey
>
>
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