[Paraview] threshold not working for polyvertex (point-clouds) (paraview 3.4, 3.6)

[Moreland, Kenneth]

In the short term you can get around this problem by first running your data through the glyph filter using the 2D Glyph/Vertex as the glyph type.  Another work around is to use the clip filter with a clip type of Scalar instead of the Threshold filter.  In the long term, John is right.  You should write out your xmf file with a single vertex cell per point.

As far as "fixing" the threshold filter, the current operation is correct, but I've thought for a long time that the clip-by-scalars functionality mentioned above should be available from within the threshold filter.  Rather than have an All Scalars checkbox, there should be a tri-state Any Scalar/All Scalars/Clip option.

-Ken


On 6/2/09 6:16 AM, "John Biddiscombe" <biddisco at cscs.ch> wrote:

don't use polyvertex. a single polyvertex consisting of N points is a single cell. Algorithms like threshold dump it. Use polydata or unstructured grid with one vertex per cell.

Either that or fix the threshold filter to work properly.

JB

Hello,

I try to visualise parts of a point cloud (POLYVERTEX) using the
threshold-filter.

But any threshold-value will remove _all_ points instead of only a few.
I wonder if this is a bug...

I attached a example-xmf-file. If you you try to visualise only the
points with 'type'>0 all points disappear, even though there are points
with type=1.0

Any idea?

Greetings
Jens



________________________________

_______________________________________________
Powered by www.kitware.com <http://www.kitware.com>

Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html

Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView

Follow this link to subscribe/unsubscribe:
http://www.paraview.org/mailman/listinfo/paraview



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

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.paraview.org/pipermail/paraview/attachments/20090602/e8f4c607/attachment.htm>