.vtu File doesn't play all solution in a "Collection" in Paraview

ParaView Support
1

Hi everyone,

I’m currently trying to play a .vtu file which contains all the timesteps of my solution but when Paraview read my .vtu file, it somehow partitioned those timesteps into individual Cell/Point Array. How do I combine them all together so that I can play all of them in on go ? Thank you

2

Please share your data

3

this the data, thank you for the swift reply.

4

I’m afraid your data is not temporal, you need to convert it to a temporal dataset, and ParaView cannot do that automatically.

It can be done manually and you could write a python script to automatize that manual operation.

5

Hi thanks for the feedback. I’m currently still new to the VTK package in Python. It will be very generous of you to point out the functions that I would require to perform said correction to my data. Thank you !

6

Are you using ParaView or VTK ?

7

I’m using Paraview to view the .vtu file. Can I do it in Paraview software itself ? Or do I need to do it in Python script ?

8

If you mean usual filters, no.

Or do I need to do it in Python script ?

You have two ways to do this.

  1. Do it using VTKPython in order to create files on disk that will be correctly formatted
  2. Do it in a programmable filter using VTKPython that will dynamically modify the data the way you want.

Both solution are quite similar tbh.

9

How do I start with the second method ? Is there an online tutorial for it ?

10

https://docs.paraview.org/en/latest/ReferenceManual/pythonProgrammableFilter.html

11

What makes the DataArray temporal ? What form should my DataArray should take ? Could you give me an example ?

12

They are many examples in the link I shared.