Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.

Re: none axis-parallel slices

Hi Mathias,

> In Ugo?s Tutorial one can see how to make slices of data. That?s working
> fine if I would only like to make slices that are parallel to an
> arbitrary axis. But what about warped slices? I implemented that by
> reading out the samples of my data-object and find the nearest
> neighbors. Then I set all other samples to null just to make them
> invisible. That works fine but is slow and complicated. I wonder if
> there is a way to use the resample() method of FlatField to implement
> warped slices? Are there any approaches?

Yes. You can define a Gridded3DSet with manifold dimension
= 2 that defines a warped slice or even a curved surface,
and pass it to the resample() method of your FlatField.

The main problem is to calculate the 3-D vertices of a 2-D
grid that lies on your warped slice. A geometry problem.

Good luck,
Bill
----------------------------------------------------------
Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI  53706
hibbard@xxxxxxxxxxxxxxxxx  608-263-4427  fax: 608-263-6738
http://www.ssec.wisc.edu/~billh/vis.html


  • 2002 messages navigation, sorted by:
    1. Thread
    2. Subject
    3. Author
    4. Date
    5. ↑ Table Of Contents
  • Search the visad archives: