[Paraview] Isosurface

[Moreland, Kenneth]

Yes, you need cells to create an isosurface.  The cells specify how the scalar field should be interpolated between points.

The easiest way to impose cells on your points is to run the Delaunay 3D filter on them.

-Ken


On 1/20/09 8:17 PM, "Mare Libero" <mareliber27 at yahoo.com> wrote:

Hi,

I am new to Paraview and I hope some of you can help me. I am trying to visualize an isosurface. I used to work with Matlab where I would input the data in 4D in the format: <X> <Y> <Z> <Intensity>
To use Paraview, I generated a dataset in VTK format as an unstructured grid with no cells. The Intensities are associated to the corners of the cells as follow:

# vtk DataFile Version 3.1 Volume ASCII DATASET UNSTRUCTURED_GRID POINTS 197173 FLOAT 1 1 1 1 1 6 1 1 11 ....
...

POINT_DATA 197173 SCALARS Intensities float LOOKUP_TABLE default 20799.3681311062 20803.8373905225 20806.6752675851......
When I open this file, Paraview correctly identifies minimum and maximum values and the number of points. But I can't manage to visualize the contours.
Any suggestion? Do I need to generate CELLS data to draw isosurfaces? Can Paraview generate an isosurface solely from POINTS data? Thanks in advance.
A






   ****      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/20090121/dd065cb8/attachment.htm>