[Xapian-discuss] Can xapian do geo search/calculations?

[Francis Irving]

Out of interest, can you write new value range processor and/or match
decider subclasses in a binding language?

e.g. Phython or Ruby

On Mon, Aug 04, 2008 at 09:45:49AM +0100, Olly Betts wrote:
> On Mon, Aug 04, 2008 at 01:16:04AM -0700, Joe Noon wrote:
> > I would be interested in exploring xapian further, but I'm not sure if
> > I can get this functionality or not.  Ive been told it may be possible
> > with a a value range processor? Is this something anyone else has
> > already explored? Or know if it would even be possible?
> 
> You could filter with two value ranges to get results restricted to a
> rectangle in the coordinate system (which is in general not quite a
> rectangle on the ground).
> 
> To actually get a circle, you'd want to use a MatchDecider subclass
> to select points based on coordinates stored in one or two document
> values.  It would probably be useful to ship a standard solution, so if
> you implement something please consider sending a patch, even if it
> needs a bit of work for general use.
> 
> There's also some code Richard has been working on in the geospatial
> branch in SVN, but he's better placed to talk about that:
> 
> http://trac.xapian.org/browser/branches/geospatial
> 
> Cheers,
>     Olly
> 
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