# Particle tracer pathlines
**URL:** https://discourse.paraview.org/t/particle-tracer-pathlines/16512
**Category:** ParaView Support
**Created:** [April 22, 2025, 11:14am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512 "2025-04-22T11:14:03Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@magnus1](https://discourse.paraview.org/u/magnus1)
#### Post date: [April 22, 2025, 11:14am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/1 "2025-04-22T11:14:03Z")
Hi,
I am currently using Paraview for my masters thesis, but I am encountering some errors with the particle tracer filter. My goal was to visualize blood flow with particles and pathlines, but paraview is either crashing or misplacing pathlines in the model. I have tried the following versions with a variety of different errors: nightly, 5.13.3, 5.11.2, 5.10.1, 5.9.1, 5.8.1 and 5.7.0. The most promising is the 5.9.1 version as the filter crashes in most of the newer versions. I have managed to visualize the particles as well as some pathlines. However, after running a couple of timesteps the pathlines stop following 50% of the particles as well as disappearing. Any solution for this?
Here is an example:
State file:
[AAA013\_sim\_0.15\_1.9mill\_paraview\_particle9.pvsm](https://discourse.paraview.org/uploads/short-url/wLz2X0KSwxdIxOl4DcFLsRN4hji.pvsm) (1.6 MB)
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 22, 2025, 11:15am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/2 "2025-04-22T11:15:56Z")
> [@magnus1](#):
>
> the filter crashes in most of the newer versions. I
Fixed in master. use the nightly: [https://www.paraview.org/download/?version=nightly](https://www.paraview.org/download/?version=nightly)
> However, after running a couple of timesteps the pathlines stop following 50% of the particles as well as disappearing.
Please share your data
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### Author:  [@magnus1](https://discourse.paraview.org/u/magnus1)
#### Post date: [April 22, 2025, 11:16am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/3 "2025-04-22T11:16:35Z")
Thank you for the quick reply! I’ll try now:)
I`ll upload the state file and the geometry.
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### Author:  [@magnus1](https://discourse.paraview.org/u/magnus1)
#### Post date: [April 22, 2025, 11:26am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/4 "2025-04-22T11:26:34Z")
The files were too big to upload. What`s the best way to share my data?
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### Author:  [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [April 22, 2025, 11:27am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/5 "2025-04-22T11:27:41Z")
> **[WeTransfer | Send Large Files Fast](https://wetransfer.com)**
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### Author:  [@magnus1](https://discourse.paraview.org/u/magnus1)
#### Post date: [April 22, 2025, 11:46am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/6 "2025-04-22T11:46:48Z")
> **[all\_results\_02000.vtu](https://wetransfer.com/downloads/73b662770e3aa41839ffcd9e24b211fd20250422114130/22c761?t_exp=1745581290&t_lsid=0f6d7c23-eb08-4779-b019-79abca1d4db7&t_network=link&t_rid=ZW1haWx8YWRyb2l0fDExODE0ZjQ3LTMxYjUtNGY4Ni1hZTg3LTQyYWRiMzk4ZWQ5NQ==&t_s=download_link&t_ts=1745322171)**
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### Author:  [@magnus1](https://discourse.paraview.org/u/magnus1)
#### Post date: [April 22, 2025, 12:02pm UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/7 "2025-04-22T12:02:17Z")
Hi, the nightly still has a pathline issue. The particles look correct but the pathlines are all over the place. See picture. Note that i uploaded the state file which all of the timesteps was uploaded to, that is why the name is all\_results\_01900 and not all\_results\_02000 in the picture.
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### Author:  [@magnus1](https://discourse.paraview.org/u/magnus1)
#### Post date: [April 23, 2025, 11:14am UTC](https://discourse.paraview.org/t/particle-tracer-pathlines/16512/8 "2025-04-23T11:14:23Z")
Hi, have you managed to reproduce the case? Do you know what’s wrong?