[Paraview] image data extents are not displayed in Information tab

[Michael Jackson]

vtkImageAlgorithm

_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio



On Oct 28, 2008, at 5:31 AM, Dominik Szczerba wrote:

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> One more question: where do you derive your reader from (maybe the
> parent class sets something for you)?
>
> Dominik
>
> Dominik Szczerba wrote:
>> Thanks Mike, but this is exactly what I have.
>> Are you sure you see both bounds and extents in Information?
>>
>> Dominik
>>
>> Michael Jackson wrote:
>>> Not sure if it is any help but here is a code snippet from my own  
>>> HDF5
>>> image reader code:
>>
>>>  outInfo->Set( vtkDataObject::ORIGIN(), DataOrigin, 3 );
>>>  outInfo->Set( vtkDataObject::SPACING(), DataSpacing, 3 );
>>>  this->DataExtent[0] = this->DataExtent[2] = this->DataExtent[4] =  
>>> 0;
>>>  this->DataExtent[1] = xDim-1;
>>>  this->DataExtent[3] = yDim-1;
>>>  this->DataExtent[5] = zDim-1;
>>>  outInfo->Set( vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(),
>>> DataExtent, 6 );
>>>  outInfo->Set( vtkStreamingDemandDrivenPipeline::UPDATE_EXTENT(),
>>> DataExtent, 6 );
>>
>>
>>> _________________________________________________________
>>> Mike Jackson                  mike.jackson at bluequartz.net
>>> BlueQuartz Software                    www.bluequartz.net
>>> Principal Software Engineer                  Dayton, Ohio
>>
>>
>>
>>> On Oct 27, 2008, at 7:55 PM, Dominik Szczerba wrote:
>>
>>> What else then WHOLE_EXTENT, UPDATE_EXTENT and SetExtent and do I  
>>> have
>>> to fill in RequestInformation/RequestData of my plugin reader  
>>> (derived
>>> from vtkImageAlgorithm) in order for Paraview to see the dataset's
>>> extents? Only bounds are displayed in the Information tab, while for
>>> native file formats there is also extents. But when I save the  
>>> file in
>>> legacy format for a test the extent is written correctly, so it WAS
>>> known to Paraview, only not displayed properly. What is wrong?
>>
>> _______________________________________________
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>> ParaView at paraview.org
>> http://www.paraview.org/mailman/listinfo/paraview
>>
>
> - --
> Dominik Szczerba, Ph.D.
> Computational Physics Group
> Foundation for Research
> on Information Technologies in Society
> http://www.itis.ethz.ch
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