Re: plotting 3-d surface from data in irregular set

• To: Susanna Ricco <smricco@xxxxxxxxxx>
• Subject: Re: plotting 3-d surface from data in irregular set
• From: Curtis Rueden <curtis@xxxxxxxxxxxxx>
• Date: Mon, 11 Aug 2003 14:21:24 -0500

Hi Susanna,

If your data can be arranged as a grid, even one not at regular
intervals (as long as each grid box is convex), then you can use a
GriddedSet instead for greater performance.

If your samples are truly irregular, you can use IrregularSet--it
implicitly computes a Delaunay triangulation of your samples and
uses it to display them as a surface. Test29 demonstrates this.

-Curtis

At 02:11 PM 8/11/2003, you wrote:
>I have a set of values generated by a surface fitting program that I want to 
>view as a 3-d surface. The MathType is ((x,y)-> z). I'm using an irregular set 
>for the domain created with an array of floats from the data generated by the 
>surface fitter. I can plot the data as points, but I can't figure out how to 
>get VisAD to connect the points and create a surface. I've tried looking at 
>the examples, but none of them use irregular sets. Is it not possible to plot 
>a surface from an irregular set? I'm pretty sure I have to use an irregular 
>set because the points from the surface fitter aren't guaranteed to be at 
>regular intervals.
>
>Thanks for the help,
>Susanna Ricco

• References:
  • plotting 3-d surface from data in irregular set
    • From: Susanna Ricco