Hi Karla,<br><br>Can you be more specific? Maybe post some screenshots and data? That filter has been quite thoroughly tested on single processor. I also fixed a few bugs that were in the parallel implementation. Depending on your ParaView version, you might not have the fixes for the parallel version. I would be surprised if the integration algorithm itself has a bug. Of course, there are always numerical accuracy issues and you can compensate by using a different integrator or adjusting the step-size (the default is Runge-Kutta 2, I believe). Known issues are:
<br><br>* Premature ending of streamlines in C-grids where the grid folds onto itself (this may be what you are seeing)<br>* Premature ending of streamlines in singlular cells<br><br>I also need to check a bug report that reads "Streamlines wrong for uniform rectilinear data... You would expect a streamline to form a circle around the X axis, but
what you get is a streamline that seems to go in completely the wrong
direction.
The problem only seems to happen in rectilinear data. If
you convert to an unstructured grid (with Clean to Grid), the
streamline appears as expected.". I am guessing it is a bug in the voxel cell type. I will check this bug and fix it if necessary in next few weeks.<br><br>-Berk<br><br><br><div><span class="gmail_quote">On 6/30/06,
<b class="gmail_sendername">Karla Vega</b> <<a href="mailto:vega@tacc.utexas.edu">vega@tacc.utexas.edu</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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<p><font size="2">Hello everyone,<br>
<br>
I've been having difficulties with the streamtracer filter. It seems to be integrating the velocity field incorrectly and some of my streamlines will not continue where they are suppose to do so. I've read through the vtkStreamTracer.h
file to learn about the different inputs, but it still doesn't show the streamlines completely.<br>
Does anyone know of any known issues with this filter?<br>
<br>
Thank you again,<br>
<br>
Karla</font>
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