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Martin <br>
<br>
I've put a dataset here<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.cscs.ch/out/biddisco/flowviz/damBreakMarin.zip">ftp://ftp.cscs.ch/out/biddisco/flowviz/damBreakMarin.zip</a><br>
<br>
try loading this in paraview, connecting a cache and then a line
source. <br>
If you are able to generate animated particles then all is well and
there is something wrong with your data.<br>
If not, then maybe somethig is wrong with paraview cvs and I'd better
take a look at it.<br>
<br>
NB. The dataset supplied is not a very good example as the time
variable increments as 0,1,2 etc, and in fact should be much smaller,
the particles travel too far each step. I only just remembered after I
uploaded it. <br>
<br>
JB<br>
<br>
<br>
<blockquote
cite="mid:9385.146.232.65.7.1234769799.squirrel@webmail.student.lth.se"
type="cite">
<pre wrap="">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
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</pre>
<blockquote type="cite">
<pre wrap=""> 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
<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
_______________________________________________ Powered by
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-- 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>
</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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