[Paraview] Stream tracer doe not show streamline

[Matteo Parsani]

Thank you very much Kennet!


On Tue, Sep 17, 2013 at 4:42 PM, Moreland, Kenneth <kmorel at sandia.gov>wrote:

>   I suspect you have two problems, both related to the fact that your
> data is 2D and the stream tracer performs its calculations in 3D.
>
>  The first problem is that the default seed source, named Point Source,
> is really a point cloud of random points within a sphere of a given radius.
> When picking points in this 3D sphere, it is unlikely that any will happen
> to hit the surface. Change to the line source, which will by default lie on
> the correct plane.
>
>  The second problem is that your vectors are not quite parallel with the
> plane. They have a Z component that is, while small, not exactly 0. Thus,
> after one step the particle advection has moved off the plane enough for
> the locator to determine that the stream has left the mesh. You can fix
> this by first passing your data through the calculator filter and give the
> expression "momentum_X*iHat + momentum_Y*jHat".
>
>  After doing those two things I got streamlines to work fine on the data
> you posted.
>
>  -Ken
>
>   From: Matteo Parsani <parsani.matteo at gmail.com>
> Date: Monday, September 16, 2013 11:28 AM
> To: "paraview at paraview.org" <paraview at paraview.org>
> Subject: [EXTERNAL] [Paraview] Stream tracer doe not show streamline
>
>     Dear Paraview users,
>  I am trying to plot the stream lines with paraview but I do not get
> anything.
>  I have played with the parameters without success.
>
>  Could you please advice?
>
>  In attachment I added a simple .vtu file that I am using to draw them. It
> is just a piece of a mesh
>
>  Thank you.
>
> Best Regards
>
> --
> Matteo
>



-- 
Matteo
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