Same sort of problem as with introducing spatial "reasoning" for SCOTS
knowledgebase tools. Difficult choice between shoehorning spatial
logic into general-purpose tools, or hashing spatial (i.e. multi-
dimensional) information to work with general-purpose query /
inference. Ready to re-write JTS in Erlang?
On Nov 23, 2009, at 8:05 AM, Andrew Turner wrote:
To open the question up - what are the example or best case interfaces
and mechanisms of a "spatially-enabled cloud database"?
And by "cloud" I mean internet accessible, on-demand, fast
provisioned, near-limitless scaling without me having to do the
administration. So setting up PostGIS/JTS/CouchDB are not cloud
databases, just db's that people tend to run on horizontally scaling
systems.
As a first step, I'd like to see a GeoJSON API for a schema-less
'cloud' datastore that exposed an OpenSearch-Geo interface for
querying it. Start with Point, but definitely needs to gain support
more complex features as well.
The store should be agnostic to the language I write my application
in.
Andrew
On Sat, Nov 21, 2009 at 12:52 PM, Josh Livni
<[email protected]> wrote:
You didn't mention if you're using java or python style appengine.
If java,
then go w/Sean's recommendation (JTS) -- if python, I'd recommend
GeoModel,
which unlike a standard geohash implementation will let you both
query by
bounding box and still have access to your single inequality filter
for
other items...
-Josh
On Sat, Nov 21, 2009 at 2:14 AM, John McKerrell
<[email protected]> wrote:
As we're on this subject... a friend asked me recently if I knew a
way to
get AppEngine to do bounding box requests, as far as he could tell
it wasn't
possible, I had a look and I couldn't see a way either. I think
perhaps the
issue was that he was using the GeoPt type but there's no way to
access the
lat/lon from within it in a search so if he just stored the lat/
lon as
separate fields that might work better. It's not something I've
looked at
too much but if anyone can offer a suggestion that would be good.
He was originally asking my about geohashing in case that would
help but
as far as I could tell it has the same problem as quadtiles in
that if
you're on the edge of a big tile you don't find stuff on the next
tile. As
it was a UK based app the meridian is likely to cause problems
there.
John
On 21 Nov 2009, at 02:00, Ivan Lucena wrote:
Oracle Spatial does work in the EC2 environment. Once you have an
EC2
account you can go to OTN ,
http://www.oracle.com/technology/tech/cloud/index.html, and get
an EC2 kit.
That means Features, 3D Point Cloud, Raster, the whole package.
________________________________________
From: [email protected]
[[email protected]] On Behalf Of Raj Singh
[[email protected]]
Sent: Friday, November 20, 2009 2:29 PM
To: [email protected]
Subject: [Geowanking] do cloud databases do spatial?
So, does Amazon SimpleDB do spatial?
http://aws.amazon.com/simpledb/
Or how about MS SQL Azure?
http://www.microsoft.com/windowsazure/sqlazure/
Any others to know about?
---
Raj
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