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 _______________________________________________ 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 > _______________________________________________ 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
