[vtkusers] VTK Time support

[David E DeMarle]

You can do it with vtkProgrammableSource (python algorithm's predecessor)
too. It just takes a little more effort. What you need to do is provide a
function to the RequestInformaiton entry point, and in there announce the
time extent information. Likewise in RequestData you have to look at the
requested time and provide the appropriate data.



David E DeMarle
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4909

On Thu, May 21, 2015 at 10:11 AM, Evan Kao <tossin at gmail.com> wrote:

> Hi Dan,
>
> I haven't yet.  That seems really helpful.  However, since
> VTKPythonAlgorithm was developed recently, does that mean the temporal
> filters (and other streaming filters) are essentially unusable in previous
> versions of VTK in Python?
>
> - Evan
>
> On Thu, May 21, 2015 at 6:11 AM, Dan Lipsa <dan.lipsa at kitware.com> wrote:
>
>> Evan,
>> Have you seen this blog post:
>>
>> http://www.kitware.com/blog/home/post/783
>>
>>
>> On Thu, May 21, 2015 at 3:59 AM, Evan Kao <tossin at gmail.com> wrote:
>>
>>> Hi David,
>>>
>>> I guess more simply/specifically, I was wondering how to set up a data
>>> object (in Python) so that it's compatible with temporal filters like
>>> vtkTemporalShiftScale, vtkTemporalInterpolator, or
>>> vtkTemporalStreamTracer.  It seems like these filters take in multi-block
>>> data, in which each block represents a different time point, but I have no
>>> idea how to specify the time value for each block.
>>>
>>> Thanks,
>>> Evan Kao
>>>
>>> On Wed, May 20, 2015 at 6:16 PM, David E DeMarle <
>>> dave.demarle at kitware.com> wrote:
>>>
>>>> It is still there, just that the classnames have morphed repeatedly
>>>> since it was first introduced.
>>>>
>>>> See Filters/General/vtkTimeSourceExample.h
>>>> and Common/ExecutionModel/Testing/Cxx/TestTemporalSupport.cxx for decent
>>>> places to start investigating.
>>>>
>>>>
>>>>
>>>> David E DeMarle
>>>> Kitware, Inc.
>>>> R&D Engineer
>>>> 21 Corporate Drive
>>>> Clifton Park, NY 12065-8662
>>>> Phone: 518-881-4909
>>>>
>>>> On Wed, May 20, 2015 at 8:53 PM, Evan Kao <tossin at gmail.com> wrote:
>>>>
>>>>> Hello vtk-users,
>>>>>
>>>>> What's the best way to store/handle time-varying data with VTK?  I
>>>>> found this Wiki page <http://www.vtk.org/Wiki/VTK/Time_Support> on
>>>>> Time Support, which says it's been implemented, but couldn't find the class
>>>>> vtkTemporalDataSet in the nightly documentation or my current version of
>>>>> VTK (6.1).  It does appear in an earlier version though (5.10.0).  Is there
>>>>> any reason why it was removed?
>>>>>
>>>>> If there isn't a special class for this, does it make sense to simply
>>>>> add multiple data arrays to a single data object, one for each time point?
>>>>> Or is it better to have a data object for each time point?
>>>>>
>>>>> Thanks,
>>>>> Evan Kao
>>>>>
>>>>> _______________________________________________
>>>>> Powered by www.kitware.com
>>>>>
>>>>> Visit other Kitware open-source projects at
>>>>> http://www.kitware.com/opensource/opensource.html
>>>>>
>>>>> Please keep messages on-topic and check the VTK FAQ at:
>>>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>>>
>>>>> Search the list archives at: http://markmail.org/search/?q=vtkusers
>>>>>
>>>>> Follow this link to subscribe/unsubscribe:
>>>>> http://public.kitware.com/mailman/listinfo/vtkusers
>>>>>
>>>>>
>>>>
>>>
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Please keep messages on-topic and check the VTK FAQ at:
>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>
>>> Search the list archives at: http://markmail.org/search/?q=vtkusers
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://public.kitware.com/mailman/listinfo/vtkusers
>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://public.kitware.com/pipermail/vtkusers/attachments/20150521/f39a1bd7/attachment.html>