[postgis-users] Geocoding

[Brad Ediger]

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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