Hi Kevin,
> While I might still try the warped 3D cone, I am currently focusing on
> creating an ellipse at descrete points along the radar radial. I have
> sucessfully created the ellipse and will soon map it to lat/lon/elev
> coords and resample the terrain data.
>
> My new question with this technique is can VisAd tell me the percentage
> of data that fills the ellipse?
>
> More specifically, if I use a Gridded2DSet (ellipse) to resample terrain
> data (lat,lon)->alt, is there a (simple) way to calculate the number of
> alt values that have been sampled with respect to the size of the ellipse?
>
>
> Eg.
>
> ********
> * *
> * | *
> * || *
> * ||| *
> ********
>
> 20% of the ellipse is filled by alt values.
The only thing that VisAD can offer is the computeArea() method
of DelaunayCustom.java, with a Gridded2DSet argument (with
manifold dimension = 1 this is a polygon boundary). So if you
can describe your ellipse with a 2-D boundary line, and the
part filled by alt values by another 2-D boundary line, just
take their ratio. Otherwise, you'll have to code your own
algorithm.
Good luck,
Bill
