[Paraview] Find Data in Python

[Christian Werner]

Hi Utkarsh,

these are great news. I tried the python trace but not in combination 
with the extraction (what I acutally do need anyway....)

As you might remember I am working around the "lack" of possibilty to 
select whole objects (cells with same RegionID). With the given 
SelectionQuerySource this workaround is complete.

There remains one issue: At some point I call an ExtractSelection() in 
Python that is followed by a call to a vtk-Plugin (which writes the 
point data of the selected points to disk). The resulting file is empty, 
because the Extraction takes a few seconds and obviously the plugin has 
no valid input when being executed. Paraview also crashes as a 
consequence. When I am doing this manually (trigger ExtractSelection, 
wait until it's done, call the vtk Plugin to write the point data) 
everything works fine. I could just go ahead and do a dull time.sleep(3) 
between the extraction and the call to the plugin, but this certainly 
isn't good programming style.

What can I do instead?


Best regards,
Christian


Utkarsh Ayachit wrote:
> Yes, you can use the "SelectionQuerySource" to construct your query as follows:
>
> selection_source_540 = SelectionQuerySource( InsideOut=0,
> ArrayName='', HierarchicalLevel=-1, ProcessID=-1, ContainingCells=0,
> DoubleValues=None, HierarchicalIndex=-1, FieldType='CELL',
> ArrayComponent=0, Operator='IS_ONE_OF', TermMode='ID',
> CompositeIndex=-1, IdTypeValues=0 )
>
> You can use the python trace recorder functionality to determine how
> to create the query. You will, however have to "Extract Selection"
> from the query (and hit apply) before the selection_source object will
> appear in the trace.
>
> Utkarsh
>
>
> On Sat, Apr 17, 2010 at 9:32 AM, Christian Werner
> <christian.werner at rwth-aachen.de> wrote:
>   
>> Hello!
>>
>> Is there any chance that the new Edit->Find Data functionality is available
>> in Python-Scripting?
>>
>>
>> Best regards,
>> Christian
>> _______________________________________________
>> 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 ParaView Wiki at:
>> http://paraview.org/Wiki/ParaView
>>
>> Follow this link to subscribe/unsubscribe:
>> http://www.paraview.org/mailman/listinfo/paraview
>>
>>