Re: Horizontal slices of 3D data

• To: "P. Tewson" <ptewson@xxxxxxxxxxxxxxxx>
• Subject: Re: Horizontal slices of 3D data
• From: Ugo Taddei <p6taug@xxxxxxxxxxxxxxxxx>
• Date: Sat, 13 Oct 2001 09:41:55 +0200

Hi Patrick, hi list,


"From: Bill Hibbard " wrote:
> 
> Hi Patrick,
> 
> You can do what you want by constructing a Gridded3DSet
> with manifold dimension = 2. This is a set consisting of
> some number of rows by some number of columns, like your
> Linear2DSet, but you explicitly set the (x, y, z)
> coordinates of each point in the set. This can be used
> to make "curvy" grids, although in your case you'd
> probably make evenly spaced "linear" grids, but with all
> the points at the desired z level. In fact, you could pass
> this set to the resample() method of your original volume
> FlatField of signal excess, and just pass the returned
> FlatField to the setData() method of your DataRerence.
> 

There's a brand new example which illustrates this in the tutorial,
which, after the next release, will be available from 

http://www.geogr.uni-jena.de/~p6taug/visad/tutorial/index.html

The newest section has many examples of interaction and resampling. What
you want to do is shown in example P6_9 (which unfortunately has a bug
somewhere and which isn't described in the text, yet).

http://www.geogr.uni-jena.de/~p6taug/visad/tutorial/s6/P6_09.java

 Chapter 6 is not finished. However, the previous examples (1 to 8) have
the same logic of moving slices and sampling lines and you only have to
"extrapolate" to a 3rd dimension.

There's more to come in section 6, to be officially released soon, at a
web site near you ;-)

Cheers,

Ugo

• References:
  • Re: Horizontal slices of 3D data
    • From: From: Bill Hibbard <hibbard@xxxxxxxxxxxxxxxxx>