I don't understand what you mean by that. If you mean you want the streamlines 
that treat the vector field as a static field at a particular time step, use 
the Stream Tracer filter. It's on the common filters toolbar. If you mean you 
want the traced streams up to that point, then step your current setup with the 
Temporal Particles ToPathlines filter to the step you want.

-Ken

From: Maryam 
<[email protected]<mailto:[email protected]>>
Date: Wednesday, May 14, 2014 3:53 PM
To: Kenneth Moreland <[email protected]<mailto:[email protected]>>
Subject: [EXTERNAL] Re: [Paraview] generate streamlines of lagrangian particles

Thanks for reply ken
But i want to have the streamline in a certain time step.

Sent from my iPad

On May 15, 2014, at 2:16 AM, "Moreland, Kenneth" 
<[email protected]<mailto:[email protected]>> wrote:

Attach the Temporal Particles To Pathlines filter to the output of the Particle 
Tracer.

-Ken

From: Maryam <[email protected]<mailto:[email protected]>>
Reply-To: Maryam <[email protected]<mailto:[email protected]>>
Date: Wednesday, May 14, 2014 3:32 PM
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>
Subject: [EXTERNAL] [Paraview] generate streamlines of lagrangian particles

hi all,

does somebody know how to generate streamlines of lagrangian particles?

I execute the following steps:
1. add the temporal cache filter
2. add a line source for seeds
3. add a ParticleTracer filter
I only see the starting points, no tracing occurs.

thanx al
Maryam
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