[Paraview] particletracer
Martin Uppman
f04mu at student.lth.se
Mon Feb 16 02:36:39 EST 2009
Hi John,
the error messages about Multiblock Dataset is showing when I dont use a
temporal cache on my input. I tried using just a line source for seed
points and I dont get any errors about that. So the problem is: If I just
use particletracer on my input and line soure I get error saying Dataset
is Multiblock Dataset which is not required. If a use a temporal cache on
my input and then make a line source as seed points and connecting the two
using the particletracer, it gives error saying dataset is TemporalDataset
which is not required.
I dont have any idea have to come around this problem. Is there another
way to follow 3d flow in a good manner? I've tried streamtracer but dont
think you get a clear view.
ERROR: In
/Users/kitware/Berk/ParaView3/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
line 822
vtkCompositeDataPipeline (0x1ff6cd60): Input for connection index 0 on
input port index 1 for algorithm vtkTemporalStreamTracer(0x1ff6cdf0) is of
type vtkTemporalDataSet, but a vtkDataSet is required.
Cheers,
Martin Uppman
--------------------------------------------------------------------------
> Martin
>
> Looking at your earlier message it seems like you are setting the seed
> points using a MultiBlock datastructure. I don't think I've enabled
> support for multiblock seed points (I will do so after clicking send, but
> you won't get it for some time). Please try converting your seed points
> to a simple dataset and retry. The error message saying DataSet is
> required is on port 1 (seeds) - not port 0 (vector field) - I didn't
> notice this before. Sorry. Try unsing a line source to start and see if
> everything works. then move on to more sophisticated stuff.
>
> JB
>
> Sorry, but this doesnt make any sense to me. I have a 3D dataset with
> magnitude and velocity (X,Y,Z) for 13 time frames. And as you wrote,
> paraview internally converts multiple vktDataSets into a
> TemporalDataSet. But particle tracer requires multiple time steps, why
> does it then give error that a vktDataSet is required? A vktDataSet,
> according to what you wrote, is just a single timestep. Martin
> Martin A single timestep is a vtkDataSet,
> StremTracer generates streamline through a vector field for this data.
> The ParticleTracer requires multiple time steps to advect particles
> through the field over time. The particle tracer requests 2 time
> steps per iteration from it's input, internally paraview converts
> multiple vtkDataSets from the input into a TemporalDataSet. JB
> Thanks you, I can now conenct the two sources. I tried on Windows and
> found this alternative if I want to use "input" or "source" in the
> particle tracer. When choosing "source" I could select both dataset
> and seed source. Problem on my Mac was that the dialog box was to
> small so I didnt find this option. Btw what is the difference between
> vtkTemporalDataSet and vktDataSet? ParticleTracer requires vktDataSet
> which I dont have, is it possible to convert the dataset somehow. I
> can use filter StreamTracer on my dataset and because StreamTracer and
> ParticleTracer is based on the same physics, I should be able to
> visualize particles. ERROR: In
> /Users/kitware/Berk/ParaView3/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
> line 822 vtkCompositeDataPipeline (0x225e2020): Input for connection
> index 0 on input port index 1 for algorithm
> vtkTemporalStreamTracer(0x225e20b0) is of type vtkMultiBlockDataSet,
> but a vtkDataSet is required. Cheers, Martin Uppman Can you tell us
> exactly (detailed, step-by-step) what you are doing? That dialog works
> fine for me (running OS X 10.5). -berk On Tue, Feb 10, 2009 at 4:10
> AM, Martin Uppman wrote: Hi again, thank you for fast
> answer John! I'm aware of the problem that my particle tracer doesnt
> have any seed source, but I have been working for quite awhile sloving
> this problem. I did as you said, created temporalcache and seed (point
> seed) but I cant connect the 2 with my particle tracer. I found your
> (John's) great powerpoint presentation on the web explaining
> everything there is to explain. Though I cant make it work!!! In one
> of the pictures in the presentation there are some boxes where you can
> choose which sources to use in the particle tracer (in object
> inspector -> properties -> source). I dont have that option in my
> program. Does someone know why (using v3.4.0 on a Mac)? About v3.4.0,
> isnt it the lastest version? Cant fint anything newer on paraview.org.
> Cheers, Martin Uppman Martin ERROR: In
> /Users/kitware/Berk/ParaView3/VTK/Filtering/vtkDemandDrivenPipeline.cxx,
> line 722 vtkCompositeDataPipeline (0x217c7fb0): Input port 1 of
> algorithm vtkTemporalStreamTracer(0x1e345e00) has 0 connections but is
> not optional. Input 0 should be a time
> dependent dataset. It is best to use a TemporalCache before the
> particle tracer to stop multiple updates for the same time step. Input
> 1 should be some seed points. Ensight -> TemporalCache ->
> ParticleTracer Some Other data eg.line/plane ->
> the ignore pipeline time option is provided to get around some
> animation issues that used to plague paraview. You should not need it,
> but the correct way to use it, is set IgnorePipelineTime to true,
> then set an animation keyframe to animate TimeStep from 0->N - the
> particle tracer will then use the timestep to generate update times
> for the Ensight input, instead of usigin the GUI generated time. If
> you are using the particle tracer from prior to 3.4 then you should
> switch to a newer one as it is contiunually being improved. I will
> soon (months, not days) be checking in a lot of changes which enable
> it to handle dynamic meshes better. JB I've been looking for
> information on this and a found a thread which I think concerns the
> same problem. In that thread Berk made a patch to fix this problem. I
> also tried to ignore pipeline time, but this doent work. I'm working
> with .case files and I want to animate the blood flow in a human heart
> using particle tracers. I'm using a Mac with ParaView version 3.4.0.
> Thanks for looking into this. Cheers, Martin Uppman
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> Biddiscombe, email:biddisco @ cscs.ch http://www.cscs.ch/ CSCS, Swiss
> National Supercomputing Centre | Tel: +41 (91) 610.82.07 Via
> Cantonale, 6928 Manno, Switzerland | Fax: +41 (91) 610.82.82
> _______________________________________________ Powered by
> www.kitware.com Visit other Kitware open-source projects at
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> _______________________________________________ Powered by
> www.kitware.com Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html Please keep
> messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView Follow this link to
> subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview -- John
> Biddiscombe, email:biddisco @ cscs.ch
> http://www.cscs.ch/ CSCS, Swiss National Supercomputing Centre | Tel:
> +41 (91) 610.82.07 Via Cantonale, 6928 Manno, Switzerland | Fax:
> +41 (91) 610.82.82
> _______________________________________________ Powered by
> www.kitware.com Visit other Kitware open-source projects at
> http://www.kitware.com/opensource/opensource.html Please keep
> messages on-topic and check the ParaView Wiki at:
> http://paraview.org/Wiki/ParaView Follow this link to
> subscribe/unsubscribe:
> http://www.paraview.org/mailman/listinfo/paraview
>
> -- John Biddiscombe, email:biddisco @ cscs.ch
> http://www.cscs.ch/ CSCS, Swiss National Supercomputing Centre | Tel:
> +41 (91) 610.82.07 Via Cantonale, 6928 Manno, Switzerland | Fax:
> +41 (91) 610.82.82
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