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

[Eric E. Monson]

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
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