[Paraview] streams from CSV table

[Moreland, Kenneth]

The issue is that ParaView regards your data as a bunch of points in empty space.  When the stream tracer looks at the empty space, it sees no field and terminates the streamline.

To see streamlines, you need a topology that interpolates field values around the points.  The easiest way to do that is to apply the Delaunay 3D filter to your data (or the Delaunay 2D if your points are on a plane).

-Ken


On 7/11/10 12:27 PM, "dragos.constantin at gmail.com" <dragos.constantin at gmail.com> wrote:

Dear all,
I am convinced that my problem was answered before but I cannot find the post. As the subject says my data is a coma separated value file that contains 6 columns (3 for X, Y, Z and the last 3 for a vector component). I am able to import the data and the I apply Table to Pint filter, followed by a calculator to build the vector (A=ihat*Ax+...). I do then a Glyph filter and I can see the vectors.

I would like to visualize the vector field line as tubes. The way I understood this works is to apply a streamline filter followed by the tubes filter but it does not work. I am surprised that I have problems with such a simple data set. Probably this is the problem. I have reading that I need "structured" data in order to generate streamlines. What is the best approach to my problem?

Thank you,
Dragos



   ****      Kenneth Moreland
    ***      Sandia National Laboratories
***********
*** *** ***  email: kmorel at sandia.gov
**  ***  **  phone: (505) 844-8919
    ***      web:   http://www.cs.unm.edu/~kmorel

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