[vtkusers] Odd behavior in vtkStreamTracer?

[Berk Geveci]

Hi Tom,

Can you share data and maybe a script that demonstrate the problem?

-berk

On Thu, Feb 12, 2009 at 3:28 PM, Bridgman, William T.
<William.T.Bridgman at nasa.gov> wrote:
> Hello,
>
> I've been generating some field lines using vtkStreamTracer.  The domain of
> the field has a hole in the center and I am interested in the flow into and
> out of the hole.
>
> I've defined my points just outside the spherical hole.  The northern region
> has outbound field lines and those are easy.  The southern region has
> inbound field lines so I set StreamTracer to reverse the direction of
> propagation.  In the southern case, the lines seem to generate okay but are
> actually *two* nearly perfectly overlaid lines with an outbound and inbound
> components that seem to have a common node at a position far from the hole.
>
> I've not yet identified a clear pattern in when it does this.  It does not
> happen to every field line in the region.
>
> I'm using a CVS repository around version 5.2, Linux on 64-bit.
>
> Any thoughts?
>
> Thanks,
> Tom
> --
> Dr. William T."Tom" Bridgman               Scientific Visualization Studio
> Global Science & Technology, Inc.          NASA/Goddard Space Flight Center
> Email: William.T.Bridgman at nasa.gov         Code 610.3
> Phone: 301-286-1346                        Greenbelt, MD 20771
> FAX:   301-286-1634                        http://svs.gsfc.nasa.gov/
>
>
>
>
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