# Particle path from point source with no time defined
**URL:** https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660
**Category:** ParaView Support
**Created:** [June 24, 2020, 1:44am UTC](https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660 "2020-06-24T01:44:55Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@ofbodur](https://discourse.paraview.org/u/ofbodur)
#### Post date: [June 24, 2020, 1:44am UTC](https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660/1 "2020-06-24T01:44:55Z")
Hi,
I was wondering if it’s possible to create a point source, use it as seed to get particle path for a series of pvtu files (name1.pvtu, name2.pvtu etc.) which upload 3D unstructured grid data to ParaView 5.8.0. The vtu files connected to each pvtu naturally don’t have the definition of time, but because they are a series of files what I have is like a temporal dataset after uploading all of them (selecting name…pvtu when opening the file, hence it looks like name\* in Pipeline browser). I had several attempts, but couldn’t get my particle path yet…
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### Author:  [@ofbodur](https://discourse.paraview.org/u/ofbodur)
#### Post date: [July 7, 2020, 11:34pm UTC](https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660/2 "2020-07-07T23:34:49Z")
No reply… (yet)
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### Author:  [@Kenneth\_Moreland](https://discourse.paraview.org/u/Kenneth_Moreland)
#### Post date: [July 8, 2020, 12:37am UTC](https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660/3 "2020-07-08T00:37:14Z")
I’m not sure what the `ParticlePath` filter is doing, but the `ParticleTracer` plus the `Temporal Particles To Pathlines` filter seems to work.
First, try attaching `ParticleTracer` to your pvtu file series and seed points. You should just see the seed points to start. If you hit `Play`, then you should see the seeds animate. (Note that because it is advecting over time, the time spent in between timesteps is important. By default, ParaView will assume each file in your time series is separated by 1 unit of time, which might not agree with the distance per time units of your velocity field.)
If it looks like the particles are animating right, you can then add the `Temporal Partcles To Pathlines` filter to get the actual path. Set `Mask Points` to 1 and `Id Channel Array` to `InjectedPointId`. After that when you hit `Play` you should see the pathlines growing.
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### Author:  [@ofbodur](https://discourse.paraview.org/u/ofbodur)
#### Post date: [July 8, 2020, 1:15am UTC](https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660/4 "2020-07-08T01:15:05Z")
Hi Kenneth,
Thanks very much for your reply. It’s weird that when I attach ParticleTracer to my seed points, the points disappear…
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### Author:  [@ofbodur](https://discourse.paraview.org/u/ofbodur)
#### Post date: [July 14, 2020, 5:01am UTC](https://discourse.paraview.org/t/particle-path-from-point-source-with-no-time-defined/4660/5 "2020-07-14T05:01:45Z")
I created Global ID’s for my seed points which I upload as a vtk file, the particles show up and change location over time steps, but when I add Temporal Particles to Pathlines filter, the path lines don’t appear. I used Id Channel Array as InjectedPointId.