[OSM-dev] Spatial vs. multi-column indexes for points

[Andreas Kalsch]

> On Thu, Sep 11, 2008 at 08:31:23PM +0200, Andreas Kalsch wrote:
> > All, thanks for your quick responses!
> > 
> > Quad tiles look like a smart way to create an index. So to lookup a
> > single point or a quad tile, this is fine. But for my application I
> > need another lookup - by bounding box with any ratio and size. Is
> > there a way to look up a special bounding box with this index? I
> > think this will be a little more complicated without conventional
> > multi-column indices. Hmm, I think you could take a maximum number
> > of quad lookups which contain the requested box, what do you think?
> 
> The code in the api calculates all possible quadtile areas and does a 
> quadtile in ( x, y, z, a, b, c, d, e, f ) or quadtile between x and y
> etc

Can you give me the position of this code in SVN, I am sure will understand it more deeply then.
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