The process of converting coordinates (latitude, longitude) into human readable names of locations, such as an address (perhaps partial) or other brief descriptive text.

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18
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1answer
3k views

Comparison of geocoding solutions (such as Gisgraphy & PostGIS 2.0)

As I am sure many of you are aware, PostGIS has finally released Version 2.0 and included within this version they have also built a geocoder (see: http://postgis.net/docs/Extras.html). Although I ...
6
votes
4answers
8k views

Getting polygons of all countries and ISO-3166-2 subdivisons

In order to do reverse geocoding lookups to find a country (as ISO-3166-1) and the subdivision (as ISO-3166-2) for given coordinates I am looking for a way to get all polygons of all countries and ...
3
votes
4answers
5k views

Free api to reverse geocode latitude, longitude to census tract?

I have a bunch of latitude,longitude coordinates (mostly city/town centroids) in the United States for which I'd like to find the containing census tract. For instance, input => nn.nnn, -nn.nnn ...
5
votes
3answers
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Is there software that will do reverse geocoding to convert photographs' GPS locations to addresses?

I am using a standalone GPS tracker that produces GPX files and then clock-sync photos with it using Microsoft Pro Photo Tools. This works pretty well. But I was also using a feature of Pro Photo ...
9
votes
2answers
4k views

What is the best way to do reverse geocoding with PostGIS?

Is there a way to do reverse geocoding with PostGIS? There's a lot of information on the Web but I found it very confusing... I have imported osm data into my own Postgres with PostGIS database. Now ...
8
votes
1answer
6k views

Looking for ZIP+4 boundaries

I know where to find 5-digit ZIP code boundaries. Do 9-digit ZIP code boundaries exist? If so, where might I find them?
6
votes
2answers
554 views

Comparing TIGERLine 2006 (and prior) With New Shapefile Format

I have created a geo database using MySQL and the TIGERLine data files available from the US Census. This is actually an MSSQL database I created that I've transfered to MySQL. Everything works ...
3
votes
2answers
729 views

Table structure for a reverse geocoding database

I should start by saying that I do not have much experience with GIS so this question may be foolish. What I do have is a database for performing a lookup from a set of coordinates to find the ...
4
votes
1answer
502 views

Is there a service that does geocoding with advanced language support?

I'm building an address disambiguation page and I'm interested in having geocoding results returned in the local language of the country the result's in. For example, if I make a reverse geocoding ...
18
votes
4answers
6k views

What reliable GeoCoding service would you recommend me?

I'm looking for a web service providing a full address based on coordinates (and reverse). I'm ready to pay for that service. I don't want to use Google's API.
2
votes
2answers
514 views

How is Mapquest Nominatim Service's “routeWidth” search param implemented?

I was looking at MapQuest's Nominatim service, and it seems like they have a non-standard search parameter (doesn't seem to exist in standard Nominatim's list of params) that is the routeWidth. Any ...
9
votes
1answer
2k views

Reverse Geocoding Libraries

I'm new to GIS and mapping services. Can anyone tell me what my options are for reverse-geocoding libraries, other than nominatim? I'm most likely going to be working with OpenStreetMap data. So ...
3
votes
3answers
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Techniques for offline reverse geocoding on a mobile device?

I am working on a mobile mapping application (currently iOS, eventually Android) - and I am struggling with how to best support reverse geocoding from lat/long to Country/State without using an online ...
8
votes
2answers
3k views

How to reverse geocode with ArcMap?

What steps to I have to take in ArcMap (ArcEditor) to input a lat / long and return nearest address? I found the Reverse Geocode tool but I can't figure out what to put in the "Input Features" and ...