Hey Pierre,
The Glyph filter only "glyphs" points, not cells, and all of your vectors are
defined for cells. I would suggest running the data through the Cell Centers
filter, which will place points at every cell center, and retain all of the
cell-centered data attributes. This will result in a bunch of points, but no
cells, so you can't visualize the data directly, but you can now apply the
Glyph filter to this output and you'll see all of the arrows starting at the
centers of your original cells.
If you want to show both the arrows and the original surface at the same time,
I'd suggest going to the Display tab for your glyphs and adding some Z
translation to the Transformation at the bottom of the panel (so the arrows and
surface don't run into each other).
Also, note that some of your vector magnitudes are very small (electron and
hole current), so if you don't see anything after you glyph them, it may be
because you need a large Scale Factor for the glyphs. (I only mention this
because at first I sized the glyphs according to the electrical field, but when
I switched to hole current the Scale Factor didn't update it's value to a
reasonable default and I couldn't see anything.)
-Eric
On Dec 1, 2010, at 1:38 PM, Pierre-Yves Emelie wrote:
> Hi,
>
> I am a newbie with Paraview. I am trying to visualize the vector field
> in the attached file. The file contains several vectors ('electrical
> field', 'electron current', 'hole current'), as well as a number of
> scalar arrays. I simply load the file, then apply a Glyph filter.
> However, only the scalar arrays show up, none of the vectors can be
> selected.. I just don't understand why. Any suggestions would be
> greatly appreciated.
>
> Thank you very much for your help.
>
> Sincerely,
>
> Pierre
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