RES: [Paraview] threshold filter problem

[Zhang Linbo]

I have encountered the same problem: if there're only cell data
and no point data, the 'threshold' filter is greyed out.

Dominik Szczerba wrote:

>I also tried the scalars as SCALARS, also with no luck: the threshold
>filter is not available in menu.
>
>...
>CELL_DATA 57350
>SCALARS myscal double 1
>LOOKUP_TABLE default
>0.4733236192835
>...
>
>
>
>Dominik Szczerba wrote:
>  
>
>>Hi Renato,
>>I am using legacy files like this:
>>
>># vtk DataFile Version 2.0
>>Unstructured Grid
>>ASCII
>>DATASET UNSTRUCTURED_GRID
>>POINTS 10580 float
>>-59.6889391685686 73.3522325136846 39.8282703700326
>>...
>>CELLS 57350 286750
>>4 8402 9189 9188 8401
>>...
>>CELL_TYPES 57350
>>10
>>...
>>CELL_DATA 57350
>>FIELD FieldData 1
>>myscal 1 57350 double
>>0.4733236192835
>>
>>Thanks for any hints
>>Dominik
>>
>>
>>
>>
>>
>>Renato N. Elias wrote:
>>
>>    
>>
>>>Dominik,
>>>
>>>Just for curiosity... which reader and PV version are you using? I'm asking
>>>it because there's a bunch of filters unavailable to work with data read
>>>      
>>>
>>>from Ensight files in PV 2.4.3. It seems that PV team has been redesigning
>>    
>>
>>>the Ensight reader in this version...
>>>
>>>Cheers
>>>
>>>Renato
>>>
>>>-----Mensagem original-----
>>>De: paraview-bounces+rnelias=nacad.ufrj.br at paraview.org
>>>[mailto:paraview-bounces+rnelias=nacad.ufrj.br at paraview.org] Em nome de
>>>Dominik Szczerba
>>>Enviada em: ter鏰-feira, 4 de abril de 2006 18:38
>>>Para: Amy Squillacote; paraview at paraview.org
>>>Assunto: Re: [Paraview] threshold filter problem
>>>
>>>Hi Amy,
>>>The thing is that the threshold filter is not at all available from menu
>>>unless I pass the data through cell2point filter...
>>>regards,
>>>Dominik
>>>
>>>Amy Squillacote wrote:
>>>
>>>
>>>      
>>>
>>>>Hi Dominik,
>>>>
>>>>It should not be necessary to first pass your data through 
>>>>CellDataToPointData.  In the GUI for the threshold filter, there is a 
>>>>menu button labeled "Attribute Mode".  Select "Cell Data" from this 
>>>>menu, and then your cell-centered scalars should be visible in the 
>>>>"Scalars" menu just below the "Attribute Mode" one.
>>>>
>>>>- Amy
>>>>
>>>>At 02:52 PM 4/4/2006, Dominik Szczerba wrote:
>>>>
>>>>
>>>>
>>>>        
>>>>
>>>>>Hi,
>>>>>I have a tetmesh with a scalar field at the cell centers. I want to 
>>>>>extract tets with a scalar value within a certain range. It only 
>>>>>works after cellData2nodeData, which, however, changes the values due 
>>>>>to interpolation (actually, destroys them for me). 1) is there a 
>>>>>particular reason threshold filter is not available for cell centered 
>>>>>data? 2) how to walk around this problem?
>>>>>Thanks for any hints
>>>>>Dominik
>>>>>--
>>>>>Dominik Szczerba, Dr.
>>>>>Computer Vision Lab CH-8092 Zurich
>>>>>http://www.vision.ee.ethz.ch/~domi
>>>>>_______________________________________________
>>>>>ParaView mailing list
>>>>>ParaView at paraview.org
>>>>>http://www.paraview.org/mailman/listinfo/paraview
>>>>>          
>>>>>
>>>--
>>>Dominik Szczerba, Dr.
>>>Computer Vision Lab CH-8092 Zurich
>>>http://www.vision.ee.ethz.ch/~domi
>>>_______________________________________________
>>>ParaView mailing list
>>>ParaView at paraview.org
>>>http://www.paraview.org/mailman/listinfo/paraview
>>>      
>>>
>>    
>>
>
>  
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