[Paraview] Where did vtkMultiGroupDataSet go?

[Mike Jackson]

Thanks.. Looks like I am going to use the vtkMultiBlockDataSet as the  
basis for my data.

I am writing a custom reader in ParaView 3(CVS HEAD) and I have  
started the porting process of the old code. One of the first things  
that I hit was this bit of code:

   vtkMultiGroupDataInformation* groupInfo =  
vtkMultiGroupDataInformation::New();
   groupInfo->SetNumberOfGroups(2);   // Assuming you have 2 members
   vtkInformation* outInfo = outputVector->GetInformationObject(0);
   outInfo->Set(vtkCompositeDataPipeline::COMPOSITE_DATA_INFORMATION 
(), groupInfo);
   outInfo->Set 
(vtkStreamingDemandDrivenPipeline::MAXIMUM_NUMBER_OF_PIECES(), 1);
   groupInfo->Delete();

Is there a substitute for this or is this code even needed anymore?


-- 
Mike Jackson   Senior Research Engineer
Innovative Management & Technology Services


On Mar 24, 2008, at 1:01 PM, Utkarsh Ayachit wrote:
> Filters/Readers/Sources primarily have two choices:
> * vtkMultiBlockDataSet
> * vtkHierarhicalBoxDataSet
>
> For any dataset comprising of unstructured grids,  
> vtkMutliBlockDataSet is the way to go. vtkHierarchicalBoxDataSet  
> can only be used for AMR data.
>
> Utkarsh
>
> Mike Jackson wrote:
>> Our data is read from a custom data file which contains multiple  
>> time steps of unstructured grid data. We also produce from the  
>> data file an outline of the data. (the outline is needed because  
>> the data comes from a internal rotated coordinate system). So  
>> basically for any given timestep I will have 1 unstructed grid and  
>> one polydata object.
>>   Any suggestions on which of the new classes would be best to use?
>> --Mike Jackson   Senior Research Engineer
>> Innovative Management & Technology Services
>> On Mar 12, 2008, at 11:22 AM, Utkarsh Ayachit wrote:
>>> vtMutliGroupDataSet has been deprecated. Please refer to the  
>>> following Wiki for details:
>>> http://www.vtk.org/Wiki/VTK/Composite_Data_Redesign
>>>
>>> Generally, the replacement for vtkMultiGroupDataSet would be  
>>> vtkMultiBlockDataSet, but it depends on your application: whether  
>>> the data is AMR or not.
>>>
>>> Utkarsh
>>>
>>> Mike Jackson wrote:
>>>> I am trying to update a set of filters/readers from PV 2.6.x to  
>>>> PV 3 CVS and it seems that the vtkMultiGroupDataSet class is not  
>>>> around any more? What would be the replacement for that class?
>>>> Doing a "find . -type f -name "vtkMultiGroupDataSet*" " in the  
>>>> paraview cvs source tree didn't seem to turn anything up.
>>>> Thanks
>>>> --Mike Jackson
>>>> imikejackson & gmail * com
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