On Fri, Jan 27, 2012 at 9:48 PM, Even Rouault
<[email protected]>wrote:
> > Yes, the format is the same, but the .qix files generated by GeoServer
> > should be smaller and perform somewhat better
> > (we have a few heuristics to get a small but effective index, avoid
> > isolated laves with single records and the like).
> > A recent version of uDig will generate the same .qix file as GeoServer
> > though
>
> Hi Andrea,
>
> Your remark aroused my curiosity. I have indeed identified a small
> addition in
> the geotools port of shapelib's shptree.c that must explain that
> optimization
> and adapted it to shptree.c. I've not verified however if the geotools
> .qix and
> shapelib .qix are now identical, but I've seen that the new code path is
> triggered in some conditions.
>
> See http://trac.osgeo.org/gdal/ticket/4472 for the patch.
>
Yep, that's the one. I've noticed it makes a significant difference when
indexing
very large files, the standard quadtree would end up with lots of these
useless
nodes.
Cheers
Andrea
--
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Ing. Andrea Aime
GeoSolutions S.A.S.
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