# paraview can not access some data in vtk file
**URL:** https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566
**Category:** ParaView Support
**Tags:** vtk
**Created:** [May 6, 2024, 7:57pm UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566 "2024-05-06T19:57:39Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@mbaghirzade](https://discourse.paraview.org/u/mbaghirzade)
#### Post date: [May 6, 2024, 7:57pm UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/1 "2024-05-06T19:57:39Z")
Hello everyone,
I have a vtk file (attached), and although it has temperature data, Paraview can not access it. Only after some time steps, when there are new output files, it can read the temperature data. There are two attached files obtained at different time steps.
[VolTs\_res\_at\_loop\_0\_17.vtk](https://discourse.paraview.org/uploads/short-url/tsl1qyaJjjaeA6fKkNzgqLKgzMi.vtk) (2.3 MB)
[VolTs\_res\_at\_loop\_0\_30.vtk](https://discourse.paraview.org/uploads/short-url/4Bjdhs2ieU9TvsLf3X0onOhniNJ.vtk) (2.4 MB)
Although there exists temperature data in the “VolTs\_res\_at\_loop\_0\_17.vtk”, paraview does not see it, but it can access the data in the second file.
I have gone through the data and its structure, but couldn’t find any disparity.
I would appreciate if any of you could suggest any possible solution to this issue.
Thank you for your time!
Kind regards
P.S. Version of my paraview is 5.11.2, while the data is written with version 2.0 of VTK format.
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 7, 2024, 8:04am UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/2 "2024-05-07T08:04:41Z")
Your file is incorrectly formatted:
```auto
vtkDataSetReader (0x60a2549385c0): Reading file version: 8.2 with older reader version 5.1
Warning: In vtkDataReader.cxx, line 574
vtkDataSetReader (0x60a2549385c0): Reading file version: 8.2 with older reader version 5.1
Warning: In vtkDataReader.cxx, line 574
vtkDataSetReader (0x60a2542614a0): Reading file version: 8.2 with older reader version 5.1
Warning: In vtkDataReader.cxx, line 574
vtkDataSetReader (0x60a2542614a0): Reading file version: 8.2 with older reader version 5.1
Warning: In vtkDataReader.cxx, line 574
vtkDataSetReader (0x60a2542614a0): Reading file version: 8.2 with older reader version 5.1
Warning: In vtkDataReader.cxx, line 574
vtkUnstructuredGridReader (0x60a2550a6a50): Reading file version: 8.2 with older reader version 5.1
ERROR: In vtkDataReader.cxx, line 3102
vtkUnstructuredGridReader (0x60a2550a6a50): Error reading cell array offset header.
```
---
### Author:  [@mbaghirzade](https://discourse.paraview.org/u/mbaghirzade)
#### Post date: [May 7, 2024, 3:58pm UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/3 "2024-05-07T15:58:18Z")
Hello Mathieu,
Thank you for your reply. This file is generated via a large code generated by previous researchers.
Do I have to convert these vtk files to an old vtk format?
But, do you know the reason why I can plot the temperature profile with the second attached file and not with the first one?
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 14, 2024, 7:08am UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/4 "2024-05-14T07:08:20Z")
> [@mwestphal](#):
>
> `Reading file version: 8.2 `
```auto
# vtk DataFile Version 8.2
```
This is not a thing, VTK current legacy format version is 5.1.
I assume that the code is using the VTK version instead of using the legacy format version.
I would first try to fix that but you will need to find out the right format version to use.
---
### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [May 14, 2024, 7:08am UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/5 "2024-05-14T07:08:44Z")
> [@mbaghirzade](#):
>
> do you know the reason why I can plot the temperature profile with the second attached file and not with the first one?
I’m afraid more investigation would be needed.
---
### Author:  [@mbaghirzade](https://discourse.paraview.org/u/mbaghirzade)
#### Post date: [May 19, 2024, 2:19am UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/6 "2024-05-19T02:19:30Z")
I understand, thank you!
---
### Author:  [@mbaghirzade](https://discourse.paraview.org/u/mbaghirzade)
#### Post date: [May 19, 2024, 2:19am UTC](https://discourse.paraview.org/t/paraview-can-not-access-some-data-in-vtk-file/14566/7 "2024-05-19T02:19:43Z")
I understand, thank you.