[Paraview] [Paraview-developers] The Quest for Data

[Utkarsh Ayachit]

Eric,

Good catch. I must have missed this one. The problem seems to be that
vtkExtractSelectedIds has a stupid limitation where it expects the
array types to be same. I am going to look at fixing
vtkExtractSelectedIds soon (give me a day or two).

Utkarsh

On Mon, Mar 1, 2010 at 2:07 PM, Eric E. Monson <emonson at cs.duke.edu> wrote:
> Hey Utkarsh,
>
> That's very cool functionality.
>
> One part of the interface is either not very intuitive or I'm running into a bug: The "is" or "is one of" operators don't seem to work with anything other than ID or Global ID. If I try to use it, say, on an integer point data attribute and do "attribute is 0" I get this:
>
> Warning: In /Users/emonson/Programming/ParaView_cvs/ParaView3/VTK/Graphics/vtkExtractSelectedIds.cxx, line 666
> vtkExtractSelectedIds (0x12c5f50e0): array types don't match
>
> ERROR: In /Users/emonson/Programming/ParaView_cvs/ParaView3/VTK/Filtering/vtkExecutive.cxx, line 757
> vtkStreamingDemandDrivenPipeline (0x11f3d63b0): Algorithm vtkExtractSelectedIds(0x12c5f50e0) returned failure for request: vtkInformation (0x12bd2f490)
> Debug: Off
> Modified Time: 2052406
> Reference Count: 1
> Registered Events: (none)
> Request: REQUEST_DATA
> FORWARD_DIRECTION: 0
> FROM_OUTPUT_PORT: 0
> ALGORITHM_AFTER_FORWARD: 1
>
> I get the same thing when I try to do that type of query on a float or idtype attribute, too.
>
> So, is "is" supposed to work with integer and other types like the "==" operator, or just with ID and Global ID?
>
> Thanks,
> -Eric
>
> ------------------------------------------------------
> Eric E Monson
> Duke Visualization Technology Group
>
>
> On Feb 24, 2010, at 4:14 PM, Utkarsh Ayachit wrote:
>
>> Folks,
>>
>> How many times have we wondered:
>> * Where's the cell with DISPLACEMENT(Magnitude) == 12?
>> * What's the point where the error condition is reached?
>> * What cell is at the location (1,2 3)?
>>
>> We always knew selection mechanism in ParaView could do that, but we
>> never found how to get it done -- the selection inspector was just too
>> confusing. Fret no more: we've added new functionality to ParaView to
>> help you locate the cells/points of interest.
>>
>> Refer to following Wiki page for details.
>>
>> http://www.paraview.org/Wiki/Find_Data_using_Queries
>>
>> This is currently in CVS (very new, so bug reports/feature requests
>> are always welcome) and should make it into the forthcoming 3.8
>> release.
>>
>> Utkarsh
>> <Find Data.png>_______________________________________________
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>
>