# Not able to Visualise PointData/CellData in Paraview

**URL:** https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325
**Category:** In Situ Support
**Tags:** vtk, python
**Created:** [April 3, 2024, 5:21am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325 "2024-04-03T05:21:01Z")
**Posts on this page:** 8
**Page:** 1

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### Author: ![mrx](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/9de053/32.png) [@mrx](https://discourse.paraview.org/u/mrx)
#### Post date: [April 3, 2024, 5:21am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/1 "2024-04-03T05:21:01Z")

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Hi, I am creating a vtkhdf writer. Although I am able to load the geometry in Paraview, but I am not able to see the datasets in PointData/CellData.  
I am creating a MultiBlockDataSet with UnstructuredGrid data inside of it.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 3, 2024, 7:15am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/2 "2024-04-03T07:15:11Z")

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Ok, maybe share some code and errors ? 🙂

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### Author: ![mrx](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/9de053/32.png) [@mrx](https://discourse.paraview.org/u/mrx)
#### Post date: [April 3, 2024, 7:22am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/3 "2024-04-03T07:22:09Z")

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I am not getting any errors in Paraview. I am just seeing the array status doesn’t contain my dataset. Attaching my hdf file herein.  
[tria.vtkhdf](https://discourse.paraview.org/uploads/short-url/rgm6tak5LUh1Udwk0OdnXkeIfjr.vtkhdf) (8.3 KB)

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 3, 2024, 7:22am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/4 "2024-04-03T07:22:46Z")

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> [@mwestphal](#):
>
> maybe share some code

Then we need to see the code writing the data.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 3, 2024, 7:23am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/5 "2024-04-03T07:23:02Z")

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But maybe @Lucas_Givord can help using only the data 🙂

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### Author: ![Lucas\_Givord](https://discourse.paraview.org/user_avatar/discourse.paraview.org/lucas_givord/32/6851_2.png) [@Lucas\_Givord](https://discourse.paraview.org/u/Lucas_Givord)
#### Post date: [April 3, 2024, 7:46am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/6 "2024-04-03T07:46:03Z")

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I also doesn’t have any error in paraview but in my terminal I have this:

```auto
 #006: /home/jafar/dev/paraview/src/VTK/ThirdParty/hdf5/vtkhdf5/src/H5Gobj.c line 669 in vtkhdf5_H5G__obj_iterate(): no creation order index to query 
   major: Symbol table                                                                                                                                
   minor: Bad value                                                                                                                                   

```

It might be related, you need to track the order for the Assembly and his children, you can check the second bullet point in this section : [VTK File Formats - VTK documentation](https://docs.vtk.org/en/latest/design_documents/VTKFileFormats.html#partitioneddatasetcollection-and-multiblockdataset)

Also note that there is a public repository which contains h5py scripts to generate valid vtkhdf file, this one create a multiblock with unstructured grid and polydata: [https://gitlab.kitware.com/keu-public/vtkhdf/vtkhdf-scripts/-/blob/main/scripts/generate\_composite.py?ref\_type=heads](https://gitlab.kitware.com/keu-public/vtkhdf/vtkhdf-scripts/-/blob/main/scripts/generate_composite.py?ref_type=heads) (this script require also vtkpython)

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<div class="post-metadata">

### Author: ![mrx](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/9de053/32.png) [@mrx](https://discourse.paraview.org/u/mrx)
#### Post date: [April 3, 2024, 7:57am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/7 "2024-04-03T07:57:02Z")

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I am actually tracking order in Assembly, have specified the argument while creating the Assembly group.  
And thanks I will checkout the public repo!

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<div class="post-metadata">

### Author: ![mrx](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/m/9de053/32.png) [@mrx](https://discourse.paraview.org/u/mrx)
#### Post date: [April 4, 2024, 7:03am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325/8 "2024-04-04T07:03:34Z")

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Thanks @Lucas_Givord I replicated the organisation from the public repo. It worked! Problem may have been the index attribute in Assembly group!