# Issue with representing particle trajectories - ParaView Particlepath, Particletracer

**URL:** https://discourse.paraview.org/t/issue-with-representing-particle-trajectories-paraview-particlepath-particletracer/12336
**Category:** ParaView Support
**Created:** [June 19, 2023, 4:42pm UTC](https://discourse.paraview.org/t/issue-with-representing-particle-trajectories-paraview-particlepath-particletracer/12336 "2023-06-19T16:42:29Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![Taha](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/t/ea5d25/32.png) [@Taha](https://discourse.paraview.org/u/Taha)
#### Post date: [June 19, 2023, 4:42pm UTC](https://discourse.paraview.org/t/issue-with-representing-particle-trajectories-paraview-particlepath-particletracer/12336/1 "2023-06-19T16:42:29Z")

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Hello,  
I am new to paraview and I am encountering issues to present particle trajectories from lagrangian data.  
I have .dat files with multiple timesteps with the following structure (similar to tecplot files) :

TITLE = “Lagrangian tracking”  
VARIABLES = “x[mm]” “y[mm]” “z[mm]” “I” “Vx[m/s]” “Vy[m/s]” “Vz[m/s]” “|V|[m/s]” “trackID”  
ZONE T=“Snapshot 0000”  
STRANDID=1, SOLUTIONTIME=0  
I=6703, J=1, K=1, ZONETYPE = Ordered  
DATAPACKING = POINT  
0 0 0 0 0 0 0 0 0  
1 2 3 4 5 6 7 8 9  
ZONE T=“Snapshot 0001”  
STRANDID=1, SOLUTIONTIME=0.00120192  
I=7190, J=1, K=1, ZONETYPE = Ordered  
DATAPACKING = POINT  
1 2 3 4 5 6 7 8 9  
11 12 13 14 15 16 17 18 19 20  
.  
.  
.  
.  
each time step is separated with these lines :  
ZONE T=“Snapshot 0001”  
STRANDID=1, SOLUTIONTIME=0.00120192  
I=7190, J=1, K=1, ZONETYPE = Ordered  
DATAPACKING = POINT

I converted the file to multiple .vtu files for multiple time steps, i imported them into paraview and were recognized as timesteps. I would like to represent the trajectories of the particles based on their positions through the time steps using paraview. Basically the idea is to be able to show the particles’ positions at succesive time steps (based on it’s trackID) as lines or tubes (similar to the following image). However the Particlepath and particletracer filters are disabled. :  
 ![similar trajectories](https://discourse.paraview.org/uploads/default/original/2X/3/32cc81ec3c9c44d1ca70ddfb6459faf1f34a7a0c.png)

I don’t know if anyone have an idea on how I can do that?

Thank you in advance.

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### Author: ![Kenneth\_Moreland](https://discourse.paraview.org/user_avatar/discourse.paraview.org/kenneth_moreland/32/15033_2.png) [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)
#### Post date: [June 19, 2023, 4:46pm UTC](https://discourse.paraview.org/t/issue-with-representing-particle-trajectories-paraview-particlepath-particletracer/12336/2 "2023-06-19T16:46:21Z")

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I think the filter you are looking for is `Temporal Particles To Pathlines`.

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<div class="post-metadata">

### Author: ![Taha](https://discourse.paraview.org/letter_avatar_proxy/v4/letter/t/ea5d25/32.png) [@Taha](https://discourse.paraview.org/u/Taha)
#### Post date: [June 19, 2023, 5:12pm UTC](https://discourse.paraview.org/t/issue-with-representing-particle-trajectories-paraview-particlepath-particletracer/12336/3 "2023-06-19T17:12:24Z")

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Yess, problem solved!! thank you very much !