# Practicle Tracking in Paraview (DualSPHysics Lagrangian output/ VTK file)

**URL:** https://discourse.paraview.org/t/practicle-tracking-in-paraview-dualsphysics-lagrangian-output-vtk-file/8023
**Category:** ParaView Support
**Created:** [September 17, 2021, 7:45pm UTC](https://discourse.paraview.org/t/practicle-tracking-in-paraview-dualsphysics-lagrangian-output-vtk-file/8023 "2021-09-17T19:45:05Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Shadman\_144](https://discourse.paraview.org/user_avatar/discourse.paraview.org/shadman_144/32/7614_2.png) [@Shadman\_144](https://discourse.paraview.org/u/Shadman_144)
#### Post date: [September 17, 2021, 7:45pm UTC](https://discourse.paraview.org/t/practicle-tracking-in-paraview-dualsphysics-lagrangian-output-vtk-file/8023/1 "2021-09-17T19:45:05Z")

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Hi there.  
Thank you for your consideration.

I have run into a problem while trying to use a streamline/particle tracer filter in ParaView with the DualSPHysics output.

Hi there.  
I want to track the particles using ParaView around my square pier, in a 3D dam-break case, which I simulated in DualSPHysics

I can import the VTK files and plot the velocity vector in 3D. But when I go to use the streamline or particle tracing filters nothing shows up in ParaView. Furthermore, when I look into spreadsheet viewer I don’t see any data.

Is there any way special way to particle tracking?

Thank you

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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: [September 20, 2021, 7:36am UTC](https://discourse.paraview.org/t/practicle-tracking-in-paraview-dualsphysics-lagrangian-output-vtk-file/8023/2 "2021-09-20T07:36:06Z")

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please share your data