[Paraview] Measurement of area

[Moreland, Kenneth]

Your problem is a bit ill defined.  What happens when a polygon has some points that are 0 and other points that are 1?  Do you include the entire polygon, throw away the polygon, or include some fraction of it?

Regardless, I think the easiest way to solve the problem is to first remove the part of the mesh that does not include the desired feature/points.  Once you do that you can run the Integrate Attributes filter to get the resulting area.

To remove polygons not in class 0, use the threshold filter with the upper threshold set to something lower than 1.  If you want to clip the polygons to use some fraction of polygons containing both class 0 and class 1 points, use the clip filter, set the Clip Type to Scalar, set the Value to something between 0 and 1, and enable Inside Out.

-Ken


On 2/2/11 8:19 AM, "mariagrazia.madaschi at libero.it" <mariagrazia.madaschi at libero.it> wrote:

I need to determine the value of the area of a surface.

I generated a .vtp surface with a python code. With python a created an array
which associates id 0 to points with particular features and 1 to all the other
points.
When I open the .vtp file with Paraview I display surface according to the
array (0/1).
I need to extract from the surface the value of the area formed by points with
id 0.

Is there any way to do that?


_______________________________________________
Powered by 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/20110202/736548ee/attachment.htm>