This all sounds like great work, thank you for putting in the time! I
ended up retooling a fair bit of Spatial myself (especially the Tiering
stuff which was, perhaps, a bit questionable in places). One of the
bigger concerns I had throughout the package, after delving into it, was
the overuse of 2d projections and planar math; this is fine for small
regions, but tends to cause noticeable distortions as you scale up to
large areas. There was also almost no handling of meridian traversing,
although it looks like Mark Miller has started adding some code to help
that (thank you!). These are sort of esoteric concerns, but fairly vital
if the solution is to scale to meet global needs. I didn't find the JTS
libraries useful as a geometric basis for basically these reasons,
unfortunately, although there are likely portions that could be useful
(e.g. simple features polydata parsing). I've tried to move a fair bit
of my code to be slightly more 3d intelligent, handle different shapes
better (bounding boxes natively, at least, with hooks for arbitrary
polygons), and work better with meridians. To be honest, it's been an
almost complete rewrite. I'm trying to get management to settle on an
open source policy (currently, it's all just for internal purposes) and
hopefully I'll be able to post the bits that may be useful, although I'm
happy to say it sounds like you're making much of this work obsolete and
I can't wait to see the patch. =)
Cheers,
Aaron
gento0nz wrote:
Hi,
Since my contribution in LUCENE-1732 I have been working on re-writing
most of the spatial contrib, particularly the Cartesian Tier code. I
have added javadoc, tests and and have removed many of the classes
which were either deprecated, unused or unnecessary. I have also
tried to define easier extension points for adding things like JTS
support, and different data formats (whether it be geohashes or
traditional latitude and longitude). Much of the work has been done
with Solr integration in mind with the overall goal being to create
enterprise ready spatial search support.
I am also planning on collaborating with some of the developers from
the JPL to improve the range the geographic functions supported and to
provide efficient searching with even the most massive and varied of
data sets.
I have every intention to contribute this as another patch soon.
Thanks,
Chris
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