[Geocoding] Database querying

[Sajjad Anwar]

What could be the existing engines and schemas that I could use?

On Thu, Sep 10, 2009 at 6:33 PM, Emilie Laffray <emilie.laffray at gmail.com>wrote:

>
>
> 2009/9/10 Sajjad Anwar <sajjadkm at gmail.com>
>
>> Hello.
>> Im new to this list. Perhaps my first email.
>>
>> Im trying to write a geocoding application for my city (Calicut, Kerala,
>> India). Currently Im updating the database using JOSM. I understood that, I
>> need to query the database with the string the user provider through my
>> application. What is the way for that? I also understood that, as Im in
>> India, we can reduce the false results by extrating the smaller subset of
>> India Database. How could that be done? Somebody in the channel gave me an
>> XML datasheet of India. How do I use that into a database in my server and
>> application? I plan to code in Python.
>> Please help. Thank you.
>>
>
> The first thing that you want is to get an extract of the database. You
> could download the entire planet or you can go to either Cloudmade or
> Geofabrik sites to have that database. http://planet.openstreetmap.org
> Since you are mostly concerned about your city, grab the smallest extract
> of India and then use Osmosis to cut this extract with a bounding containing
> your town.  http://wiki.openstreetmap.org/wiki/Osmosis
> There are two tools to import OSM data into a postgres database: Osmosis
> and osm2pgsql. They have 2 different schemas. Osmosis is quite complete but
> more difficult to work this, while osm2pgsql is done for Mapnik rendering.
> It is likely that if you are building a geocoding application from scratch,
> that you will need to extract the data from one of those schemas. Else, you
> can ask around if you could use one of the existing engine for your town.
>
> Emilie Laffray
>



-- 
Sajjad Anwar
http://geohackers.in
http://fsugcalicut.org
geohackers.in at gmail.com
+91 9995 19 13 12
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