[Product-Developers] Geospatial search with Plone (neighborhood search)

[Christian Ledermann]

We are using http://plone.org/products/collective.geo.index/ in production
on http://iwlearn.net/ for a few month now without any issues.

another plone catalog integration is pleiades.vaytrouindex which too
builds on spacialindex and Rtree

On Thu, Mar 1, 2012 at 2:33 AM, Sean Gillies <sean.gillies at gmail.com> wrote:
> PostGIS is great, but that's the kind of external GIS database he
> wants to avoid, yes?
>
> I'm not aware of any spatial indexes that are completely internal to
> Plone. The collective.geo.index mentioned by Giorgio maintains an
> index file on disk (next to Data.fs fwiw).

Right, I thought about storing the data in the zodb but is it worth
the effort? The current implementation works just fine.
Contributions are welcome ;)

> I'm using the same  Python
> R-tree module (http://pypi.python.org/pypi/Rtree/) in a separate
> server with my catalog, in the manner of alm.solrindex.
>
> My $.02: Geohashing [1] might be useful for Plone. Coordinates could
> be hashed into strings and then proximity search becomes a text
> indexing problem, something that you, Andreas, well understand. A list
> of objects from a rough geohash-based search (including false
> positives) could then be filtered using Shapely, which can measure the
> minimum distance [2] between geometric objects (like a point and a ZIP
> polygon). That's quite a bit like the PostGIS approach, in fact.
>
> [1] https://code.google.com/p/python-geohash/
> [2] http://toblerity.github.com/shapely/manual.html#object.distance
>
> On Wed, Feb 29, 2012 at 3:57 PM, Jens W. Klein <jens at bluedynamics.com> wrote:
>> I'd wrap something around Postgis
>> http://postgis.refractions.net/
>>
>> just my 0.02€
>>
>> Jens
>>
>>
>> On 29.02.2012 16:34, ajung wrote:
>>>
>>> We have a database with roughly 10k locations within Germany, Austria and
>>> Swiss.
>>>
>>> We need to build a neighborhood search as part of a Plone application and
>>> I
>>> don't want to use an external GIS database. plone.org lists roughly 40
>>> add-ons - hard to make a decision.
>>>
>>> Each location has each own postal address and geo coordinates.
>>>
>>> The user can enter the ZIP code and the radius to search around (we can
>>> map
>>> the ZIP code to coordinates already)...the question is which add-on gives
>>> me
>>> the functionality
>>> of a neighborhood search? Ideally the result should be displayed in Google
>>> Maps (or some something similar).
>>>
>>> Any recommendation?
>>> -aj
>>
>> --
>> Klein & Partner KG, member of BlueDynamics Alliance
>>
>>
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>> Product-Developers at lists.plone.org
>> https://lists.plone.org/mailman/listinfo/plone-product-developers
>
>
>
> --
> Sean Gillies
> _______________________________________________
> Product-Developers mailing list
> Product-Developers at lists.plone.org
> https://lists.plone.org/mailman/listinfo/plone-product-developers



-- 
Best Regards,

Christian Ledermann

Nairobi - Kenya
Mobile : +254 702978914

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