[Paraview] XDMF questions...

[Jerry Clarke]

Sree,

1) Make each separate Topology a separate Grid. Then encapsulate
all the grids into a collection :
	<Grid GridType="Collection" CollectionType="Spatial" ..
           <Grid
           <Grid
2)Use XdmfSet :

         <Set Name="Ids" SetType="Node" SetLength="4">
             <DataItem Format="XML" Dimensions="4" >
                 1 2 3 4
             </DataItem>
             <Attribute Name="Force" Center="Node">
                 <DataItem Format="XML" Dimensions="4" >
                     100.0 110.0 100.0 200.0
                 </DataItem>
             </Attribute>
         </Set>
3)No not really. You could use a nested <DataItem> of type="Coordinates"
but that would be messy and slow.


Jerry

Kidambi Sreenivas wrote:
> Hi,
> 
>   I have a custom unstructured grid and solution file that is in HDF5. 
>  I was looking into reading this into ParaView and was planning on using 
> XDMF for this purpose.  However, I have run into certain issues which I 
> am not sure how to address and hence this plea for help:
> 
> (1) I have the connectivity maps for the various element types as 
> separate chunks in the HDF file, i.e., the Tetrahedra connectivity is 
> stored separately from the Wedge connectivity etc.  This leads to a 
> problem with the Topology specification as I can have only one Topology 
> section per Grid.  If I set the Topology type to Mixed, then I have to 
> re-encode my connectivity data (something I would prefer not to do).  Is 
> there any way to read this data given these constraints?
> 
> (2) I did not see any support for specifying boundary "tags", i.e., an 
> integer identifier for boundary faces (triangles and quads in 3D) such 
> that I can display only a specified surface or a list of surfaces as 
> needed.  Am I missing something or is this feature not available?
> 
> (3) I have the dependent variable vector (consists of a combination of 
> scalars and vectors) that is written out as a single entity and not as 
> individual scalars and vectors.  Is there an easy way to make XDMF read it?
> 
> Thanks for your help,
> 
> Sree
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