# Xdmf3 and GeometryType "X\_Y\_Z" with Quad9 Topology

**URL:** https://discourse.paraview.org/t/xdmf3-and-geometrytype-x-y-z-with-quad9-topology/922
**Category:** ParaView Support
**Created:** [November 16, 2018, 4:09pm UTC](https://discourse.paraview.org/t/xdmf3-and-geometrytype-x-y-z-with-quad9-topology/922 "2018-11-16T16:09:14Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![gbornia](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/g/6f9a4e/32.png) [@gbornia](https://discourse.paraview.org/u/gbornia)
#### Post date: [November 16, 2018, 4:09pm UTC](https://discourse.paraview.org/t/xdmf3-and-geometrytype-x-y-z-with-quad9-topology/922/1 "2018-11-16T16:09:14Z")

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All,  
I am trying to visualize Quad9 element with Xdmf3. I’m using Paraview 5.5.2.  
I intend to use the “X\_Y\_Z” GeometryType instead of “XYZ” (later my code will read 3 separate HDF5 fields).

I’m doing a minimal test in XML (attached here).  
It fails to read using Xdmf3 (although it still works with Xdmf2 Reader, which is pretty weird since I am using keywords that were introduced in Xdmf3 only).

The message I get is “Skipping unrecognized array type [None]”.

Any help is much appreciated!

Best,  
G. Bornia

[quad9\_X\_Y\_Z.xmf](https://discourse.paraview.org/uploads/default/original/1X/b1e1ebc1f8d66bf72d1b7744d9a754e89c19b6d0.xmf) (1.0 KB)