# LagrangianParticleTracker example file

**URL:** <https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571>\
**Category:** ParaView Support\
**Created:** [September 13, 2018, 3:21pm UTC](https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571 "2018-09-13T15:21:52Z")\
**Posts on this page:** 5\
**Page:** 2

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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 4, 2023, 2:32pm UTC](https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571/21 "2023-09-04T14:32:19Z")

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Please share your complete (at least 10 timesteps) dataset so I can test first 🙂

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**Author:** ![otaolafr](https://discourse.paraview.org/user_avatar/discourse.paraview.org/otaolafr/32/3595_2.png) [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Post date:** [September 4, 2023, 2:45pm UTC](https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571/22 "2023-09-04T14:45:37Z")

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for sure! here you have them:

> **[example10steps.7z](https://wetransfer.com/downloads/fc19706a7fb66e209860d61e19e0674b20230904144440/d6f44a)**
>
> 1 file sent via WeTransfer, the simplest way to send your files around the world

regards,

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<div class="post-metadata">

**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 4, 2023, 2:55pm UTC](https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571/23 "2023-09-04T14:55:59Z")

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There is no particles in this file ?

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<div class="post-metadata">

**Author:** ![otaolafr](https://discourse.paraview.org/user_avatar/discourse.paraview.org/otaolafr/32/3595_2.png) [@otaolafr](https://discourse.paraview.org/u/otaolafr)\
**Post date:** [September 4, 2023, 2:57pm UTC](https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571/24 "2023-09-04T14:57:31Z")

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In the first time step ie., 0.5 there is no particles in the rest, yes. as the solver that generated the particles used as beginning the time step 0.5.

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<div class="post-metadata">

**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 4, 2023, 3:11pm UTC](https://discourse.paraview.org/t/lagrangianparticletracker-example-file/571/25 "2023-09-04T15:11:36Z")

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There seem to be indeed a bug with the definition of the timesteps in the OpenFOAM reader, I managed to work around it by saving the particles in another temporal format first:

 ![image](https://discourse.paraview.org/uploads/default/original/2X/4/40ded8ba2989896024aafaf8d9c97a797c4a56ec.png)

You definitely should open an issue though: [https://gitlab.kitware.com/paraview/paraview/-/issues](https://gitlab.kitware.com/paraview/paraview/-/issues)

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