Hi Mulone,
It sounds like you want to use the com.bbn.openmap.geo package, and use
the Intersection class and ExtentIndex to do spatial analysis.
The com.bbn.openmap.layer.test.GeoIntersectionLayer is an example of
using the index and Intersection class. Start by looking at the
prepare() method to see how the Intersection class is used, then follow
the rIndex object to see how to build up the index with GeoRegion
objects (represenations of the geographic areas).
If you are using the beta, you can use the OMGeo class to make it easier
to manage GeoExtents as OMGraphics.
Hope this helps,
Don
Mulone wrote:
> Hi guys,
> I'm trying to implement a query in OpenMap returning all the geometries
> contained in a circle, knowing two parameters: circle center latlon
> coordinates and circle radius (in degrees). I know how to fetch objects
> within a certain radius (findAll) but it's expressed in screen coordinates,
> I want to work with latlon.
>
> Any ideas?
>
> Cheers,
> Mulone
>
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Received on Tue Jul 21 2009 - 12:07:26 EDT