Gregory Yetman wrote:
Hi,
I'm working on a project that focuses on polar metadata and we'd like
to 'enable' the spatial searching for areas that cover the poles. To
do this properly (avoid false matches), we want to do the comparison
in spherical coordinates, i.e.,
http://en.wikipedia.org/wiki/Spherical_coordinates#Spherical_coordinates
rather than lat/long. So we are looking for software packages
(preferably open source) that will:
- transform a lat/long box into spherical coordinates
- intersect the result with a given set of extents and return the matches
- optionally return the area of overlap in spherical coordinates &
lat/long
I think that perhaps GeoServer/GeoTools may be able to do this, but I
couldn't determine if it would be supported from my admittedly quick
peek at the documentation.
Well we got the transformation engine, so you should be fine. Now just
find a data set in polar coordinates ;-) Indeed GeoServer out of the
box, with a your data in PostGIS would represent a nice fast scalable
solution (using WFS to submit the queries, and there is WFS client code
in GeoTools for you).
Cheers,
Jody
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