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From Sean Ochoa <sean.m.oc...@gmail.com>
Subject Re: postgis > cassandra?
Date Sat, 05 Feb 2011 18:04:13 GMT
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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