# HyperTreeGridToDualGrid BUG

**URL:** https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287
**Category:** ParaView Support
**Created:** [March 27, 2022, 2:19pm UTC](https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287 "2022-03-27T14:19:20Z")
**Posts on this page:** 5
**Page:** 1

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### Author: ![sharaborin](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/s/9de053/32.png) [@sharaborin](https://discourse.paraview.org/u/sharaborin)
#### Post date: [March 27, 2022, 2:19pm UTC](https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287/1 "2022-03-27T14:19:21Z")

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Dear Paraview community,  
I use adaptive grids **htg** format to output results. And I am trying to use HyperTreeGridToDualGrid to draw a contour. When I am doing it for one timestep it works perfectly, but when I move to another timestep, then it doesn’t work at all. Is it bug?

 ![Screenshot 2022-03-27 at 20.36.58](https://discourse.paraview.org/uploads/default/original/2X/3/30067f5e47d34854f1a5dd4f478fcbda7d44617f.png)  
Best regards,  
Evgenii

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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: [March 28, 2022, 12:47pm UTC](https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287/2 "2022-03-28T12:47:03Z")

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Hi @sharaborin

Could you share your data ?

Best,

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### Author: ![sharaborin](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/s/9de053/32.png) [@sharaborin](https://discourse.paraview.org/u/sharaborin)
#### Post date: [March 28, 2022, 7:28pm UTC](https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287/3 "2022-03-28T19:28:40Z")

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Dear Mathieu,

I am sorry, there is an archived htg fles:

[Archive.zip](https://discourse.paraview.org/uploads/short-url/hWCR3Cxc2eLkkinxPoVtOe0MNBX.zip) (1.3 MB)  
i

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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: [March 28, 2022, 7:41pm UTC](https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287/4 "2022-03-28T19:41:14Z")

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I reproduce. Please open an issue on our gitlab: [https://gitlab.kitware.com/paraview/paraview/-/issues](https://gitlab.kitware.com/paraview/paraview/-/issues)

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### Author: ![sharaborin](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/s/9de053/32.png) [@sharaborin](https://discourse.paraview.org/u/sharaborin)
#### Post date: [March 28, 2022, 7:42pm UTC](https://discourse.paraview.org/t/hypertreegridtodualgrid-bug/9287/5 "2022-03-28T19:42:32Z")

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ok, I will open an issue.