# Unable to display 3D data in HDF5 format

**URL:** https://discourse.paraview.org/t/unable-to-display-3d-data-in-hdf5-format/15913
**Category:** ParaView Support
**Created:** [December 26, 2024, 1:34pm UTC](https://discourse.paraview.org/t/unable-to-display-3d-data-in-hdf5-format/15913 "2024-12-26T13:34:51Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![kentatonix](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/k/bcef8e/32.png) [@kentatonix](https://discourse.paraview.org/u/kentatonix)
#### Post date: [December 26, 2024, 1:34pm UTC](https://discourse.paraview.org/t/unable-to-display-3d-data-in-hdf5-format/15913/1 "2024-12-26T13:34:51Z")

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[sample\_3d\_data.h5](https://discourse.paraview.org/uploads/short-url/7BvHxqOSxvYUvMYQYpUbHocOluZ.h5) (978.6 KB)  
[gene\_h5.py](https://discourse.paraview.org/uploads/short-url/sAnVFcK4BIqpdsXtOW8PfrcPs9C.py) (1.6 KB)

I cannot display 3D data in HDF5 format (sample\_3d\_data.h5) in paraview. This data was generated using the attached sample python program (sample\_3d\_data.h5).  
The error displayed is as follows. Do you know how to resolve this error?

ERROR: In vtkPDALReader.cxx, line 87 vtkPDALReader (0000019EAA271840): Cannot open file C:\Users\70491295\Desktop\homcloud\sample\_3d\_data.h5 ERROR: In vtkExecutive.cxx, line 730 vtkPVCompositeDataPipeline (0000019E96471A40): Algorithm vtkPDALReader (0000019EAA271840) returned failure for request: vtkInformation (0000019EAD267150) Debug: Off Modified Time: 2875060 Reference count: 1 Registered Events: (none) Request: REQUEST\_DATA FORWARD\_DIRECTION: 0 ALGORITHM\_AFTER\_FORWARD: 1 FROM\_OUTPUT\_PORT: 0

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<div class="post-metadata">

### 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: [December 30, 2024, 10:55am UTC](https://discourse.paraview.org/t/unable-to-display-3d-data-in-hdf5-format/15913/2 "2024-12-30T10:55:26Z")

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HDF5 is not a format, its a container, which format are you using ?

reading the code, it looks like a simple 3D blob of data, you will need to read that using your own reader that you could write in a python programmable source.