[postgis-users] Geocoding

[Brent Pedersen]

this is perhaps not useful if you've already written your own geocoder,
but there's a python module geopy which lets you use any of the web 
geocoding services (yahoo,google,geocoder.us,etc.) to do geocoding.
one could probably call that from postgres via PL/Python.
-brent


On Fri, 2 Feb 2007, Brad Ediger wrote:

> Yes, the TIGER/Line data can be horribly inaccurate, and the Navteq/Tele 
> Atlas data is horribly expensive.
>
> Google Maps provides a geocoder web service 
> (http://www.google.com/apis/maps/documentation/#Geocoding_Examples) via HTTP 
> but it is rate-limited to 50,000 requests per day. They have some 
> commercial-use restrictions, IIRC, and you can't use any of the GMaps 
> services for real-time tracking. But it might fit the bill.
>
> Their commercial-use service is pretty darn expensive, too. Starts at $10,000 
> per year and goes up from there.
>
> hth,
> Brad
>
> On Feb 2, 2007, at 2:29 PM, Rob Tester wrote:
>
>> I think that the task of geocoding is fairly easy and I have written a 
>> geocode function that uses PostGIS. However, the problem is where to get 
>> the data. In the U.S. you can use Tiger line data from the census, but it 
>> is horrible inaccurate.  If you have resources you can purchase more 
>> accurate data from other companies like Navteq, or manually correct the 
>> census data.
>> 
>> 
>> 
>> Rob.
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> From: postgis-users-bounces at postgis.refractions.net 
>> [mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Stone, 
>> Matthew (DHS-HISP)
>> Sent: Friday, February 02, 2007 1:15 PM
>> To: postgis-users at postgis.refractions.net
>> Subject: [postgis-users] Geocoding
>> 
>> 
>> 
>> Does/Will PostGis have a Geocoding routine built in such as ArcSDE has 
>> locators and geocoding processing?  I am curious, as geocoding is the 
>> building block of any GIS work I do and I have need of decent open-source 
>> solutions that can process millions of records in a batch mode, or can be 
>> implemented on the WEB as a “geocoding service” either again in batch mode, 
>> or real time via other web-based applications.  I understand the 
>> limitations of this functionality in an open-source environment, namely the 
>> ability of getting decent reference data, but am curious all the same.
>> 
>> 
>> 
>> Maybe a module could be built that accesses the geocoding services provided 
>> by Google or Yahoo, of MS Virtual Earth??????
>> 
>> 
>> 
>> Just thought I would throw this out there.
>> 
>> 
>> 
>> Matthew
>> 
>> 
>> 
>> Matthew Stone, MPH
>> UCSF/CA Dept. of Health Services
>> Health Information & Strategic Planning (HISP)
>> 
>> Office of County Health Services (OCHS)
>> 
>> 1501 Capitol Ave MS 5204
>> 
>> Mailing Address:
>> PO BOX 997413, MS 5204
>> Sacramento CA 95899-7413
>> 
>> Physical Address:
>> 
>> 1501 Capitol Avenue, Suite 71.5195, MS 5204
>> 
>> Sacramento, CA 95814
>> 
>> _____________________________
>> 
>> PH: 916-552-9918
>> FAX: 916-552-8260
>> 
>> mstone at dhs.ca.gov
>> 
>> 
>> 
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