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Martin <br>
<br>
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.<br>
<br>
JB<br>
<br>
<blockquote
cite="mid:16998.146.232.65.7.1234507996.squirrel@webmail.student.lth.se"
type="cite">
<pre wrap="">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
</pre>
<blockquote type="cite">
<pre wrap=""> 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
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+41 (91) 610.82.07 Via Cantonale, 6928 Manno, Switzerland | Fax:
+41 (91) 610.82.82
</pre>
</blockquote>
<pre wrap=""><!---->
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</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="78">--
John Biddiscombe, email:biddisco @ cscs.ch
<a class="moz-txt-link-freetext" href="http://www.cscs.ch/">http://www.cscs.ch/</a>
CSCS, Swiss National Supercomputing Centre | Tel: +41 (91) 610.82.07
Via Cantonale, 6928 Manno, Switzerland | Fax: +41 (91) 610.82.82</pre>
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