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From Aaron Morton <aa...@thelastpickle.com>
Subject Re: postgis > cassandra?
Date Sun, 06 Feb 2011 21:14:48 GMT
Here is a recent presentation from simplegeo.com that may provide some inspiration 
http://strangeloop2010.com/system/talks/presentations/000/014/495/Malone-DimensionalDataDHT.pdf

Can you provide some more details on the data you want to store and queries you want to run
? 

Aaron

On 6/02/2011, at 7:04 AM, Sean Ochoa <sean.m.ochoa@gmail.com> wrote:

> That's a good question, Bill.
> 
> The data that I'm trying to store begins as a simple point.  But, moving fo=
> rward, it will become more like complex geometries.  I assume that I can si=
> mply create a JSON-like object and insert it.  Which, for now, that works. =
>  I'm just wondering if theres a typical / publicly accepted standard of sto=
> ring somewhat complex spatial data in Cassandra.
> 
> Additionally, I would like to figure out how one goes about slicing on large spatial
data sets given situations where, for instance, I would like to get all the points in a column-family
where the point is within a shape.  I guess it boils down to using a spatial comparator of
some sort, but I haven't seen one, yet. 
> 
>  - Sean
> 
> On Sat, Feb 5, 2011 at 9:51 AM, William R Speirs <bill.speirs@gmail.com> wrote:
> I know nothing about postgis and little about spacial data, but if you're simply talking
about data that relates to some latitude & longitude pair, you could have your row key
simply be the concatenation of the two: lat:long.
> 
> Can you provide more details about the type of data you're looking to store?
> 
> Thanks...
> 
> Bill-
> 
> 
> On 02/05/2011 12:22 PM, Sean Ochoa wrote:
> Can someone tell me how to represent spatial data (coming from postgis) in
> Cassandra?
> 
>  - Sean
> 
> 
> 
> -- 
> Sean | M (206) 962-7954 | GV (760) 624-8718

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