Tagged Questions

A GIS operation for converting street addresses into spatial data that can be displayed as features on a map, usually by referencing address information from a street segment data layer.

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5
votes
1answer
168 views

What is the bare minimum data I would need to import from an OSM data file in order to geocode an address?

I'm using osm2pgsql to import an extract of OpenStreetMap's data so I can geocode an address to a lat/lng. But I'm new to OSM and mapping so I'm having trouble figuring out what data is relevant and ...
3
votes
1answer
337 views

What open source software should I use to geocode the addresses?

Need to geocode the student addresses using the regular 5-digit zip codes. Geocoder will give us an accurate point on the map, so in a Latitude and Longitude environment that should suffice for our ...
1
vote
0answers
97 views

Calculating tiles extents using some level data

I have some data looking like this: <?xml version="1.0" encoding="utf-8"?> <levels> <level nr="0" tileWidth="512" tileHeight="512" envSizeX="5000" envSizeY="5000" minX="465000" ...
7
votes
1answer
675 views

Is it possible to geocode street intersections using Nominatim?

Is it possible to geocode the location of a street intersection using Nominatim? Example geocode query Commonwealth Ave at Washington Street, Boston, MA Successful Geocode by Google ...
2
votes
1answer
512 views

Autocomplete against geocode.arcgis.com?

I have built a tool that allows my users to perform geocode requests against the World Geocoding Service provided from Esri. I would like to extend my tool to have an autocomplete feature, similar to ...
2
votes
1answer
274 views

How to geocode IP addresses at finer resolution than the city level?

I have tried several Geocoding IP API or tools but found that the Lat/Long output is same for all addresses in the same city, which could not meet my needs. Can anyone suggest a better way to geocode ...
0
votes
1answer
333 views

Using Geocode Service Published to ArcGIS Server Within Silverlight Web Map

I'm trying to replicate this sample on my web map. I have been able to build it successfully as-is within VS 2010. However, I run into some issues when I try to get it to work with my services. ...
-3
votes
3answers
1k views

The list of geocodes of villages/cities of India wanted

Any relevant information is welcome. For example, license of the data, where I can find relevant sources, etc.
2
votes
1answer
669 views

How to obtain road classification type at a point via nominatim?

This is my first time posting here so please forgive me if i ask a trivial question. Is there a way of obtaining the type of road an object is settled in from a request via nominatim? (i have the ...
1
vote
0answers
124 views

locator service to use with ArcGIS Javascript API v2.1

I am hoping to find a locator service that will locate by address or intersection, and that will work with version 2.1 of the ArcGIS Javascript API. I tried this locator given in the examples, which ...
12
votes
2answers
279 views

Using web mapping and geocoding to track genealogical data

Over the last year I have gotten involved in researching my family tree. My paternal grandfather came from a remote island in the Atlantic, along with hundreds of others of his generation, and many of ...
3
votes
1answer
461 views

Has MaxMind's GeoLiteCity IP geocoding database been reduced in accuracy?

I took a copy of MaxMind's free city-level geocoding database a year or so ago, and the file size was roughly 30MB. Checking their site again today (July 2012), the equivalent file is now only 17MB, ...
4
votes
2answers
811 views

Differences between OSM data and MapQuest OSM data?

I currently have an OSM "stack" server (Postgres/PostGIS, Mapnik, OpensLayers) working in a development environment, with almost all the South America countries loaded on the database. Since the ...
5
votes
2answers
2k views

How to return individual address components (city, state, etc.) from GeoPy geocoder?

I'm using GeoPy to geocode addresses to lat,lng. I would also like to extract the itemized address components (street, city, state, zip) for each address. GeoPy returns a string with the address -- ...
10
votes
4answers
5k views

What is the difference between geocoding and georeferencing?

After some googling around both seem to be interchangable words, where we speak of tying the spatial info of a real place and storing in database. But still I am not satisfied, there should be some ...
1
vote
2answers
492 views

Geocoding like Google - how to do this?

I have Postgre database with network table that contains country, street name, numbers from left – to left, numbers from right-to right. I finished geocoding function to use like this: user fills 3 ...
3
votes
1answer
144 views

Is there a straightforward way to tweak LatLon on a sphere to represent true LatLon?

I have no experience in mapping, so please excuse me if this sounds foolish. I'm trying to use Microsoft MapPoint (2004) software to geocode a number of addresses in Excel. However, my version of ...
7
votes
4answers
14k views

How to convert zip codes to latitude and longitude?

I have a data set that includes a list of zip codes. Is there a way in R to convert these zip codes to latitude and longitude coordinates?
3
votes
2answers
283 views

Geocode a table, then append more rows to the table

I'm starting on a project with ArcGIS 10 where I'll be doing quite a bit of geocoding addresses. I understand the basics of how to do that. But a frustration on an earlier similar project is that ...
8
votes
4answers
5k views

Geocode address once in google maps, save in database, read geocoded result from there on

Is it possible to geocode an address, save the result in a database, then read that result from there on? I'm using a Google map that is geocoding hundreds of addresses which obviously hit the ...
2
votes
0answers
22 views

Cloudmade Web Maps API Geocoding Issue [duplicate]

Possible Duplicate: Cloudmade Web Maps API Marker Clustering problem I'm at Geocoding in Cloudmade Web Maps API. I've the code below. Whenever I try to access the page, content of elements ...
3
votes
4answers
5k views

Can I use the Google Geocoding API to parse and standardize address data?

I need to parse single-field addresses into multiple fields such as address number, street name, street type, etc. Esri has the Standardize Addresses tool in the Geocoding Tools toolbox, but I am ...
2
votes
2answers
503 views

how we create line between two cordinates on polymap?

I am working on d3 and polymaps, I plot map and create circle on the given latitude and longitude which retrieves from the JSON file but now I want to connect those circles with line. I tried to do it ...
2
votes
4answers
4k views

How to do geo coding with openlayers?

How can I achieve Geocoding with the JavaScript OpenLayers API, in the same fashion as the Google Maps API?
4
votes
2answers
260 views

A quick-fix solution for geocoding?

I am working on a prototype for a web-based trip planner and need to have a geocoding function (for the start and destination adresses), up and running the "easy" way. My area that the prototype is ...
8
votes
1answer
512 views

How does IP geocoding work?

I'm trying to understand how using each part of an IP address influences the accuracy of geocoding. For example, if 15.201.xxx.xxx is used instead of 15.201.123.xxx what is the approximate ...
1
vote
2answers
2k views

add location search to openlayers map

I am trying to figure out how to add a search functionality to my openlayers map. I want the user to type in an address and the map to zoom into the location. I am looking at different geocoders and ...
5
votes
1answer
848 views

SQL Query to Reverse Geocoding in PostGIS

I try to do Reverse Geocode from my shapefile on the database. I'd already try with Spatialite and PostGIS to put shapefile (.shp) into it. But I'm still can't delivered my objection about reverse ...
1
vote
2answers
504 views

Query MapInfo TAB Files

My company currently uses MapInfo Professional to map our client's addresses into territories. I have been asked to figure out a mechanism to do the same thing but real-time via a web service call. ...
18
votes
1answer
2k 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 ...
0
votes
2answers
3k views

Is there an open source international GeoCoding database if you only need city level resolution?

I'm writing an application that needs to plot a user's location on the map, and the user could be anywhere in the world, but I only need city/town level resolution, not street address. Is there a ...
0
votes
0answers
147 views

Looking for geocoding data for New York State

I have tried the following local data sets: TIGER 2010 TIGER 2006 www.datasciencetoolkit.org http://www.gisgraphy.com They are all very inaccurate for data in New York State. I need the data to ...
0
votes
1answer
497 views

How to convert Singapore Onemap Co-ordinate to Google maps co-ordinate system

I have to fetch few 3000 co-ordinates (I am Geo-coding ) and convert it into Google map co-ordinate system. Following is the process I am doing I am calling Mapone.sg API for geo-coding in return ...
3
votes
3answers
2k views

Are there any geocoding plugins for QGIS that interpolate along linear features instead of querying web services?

I am curious if there are any tools for QGIS to facilitate geocoding tabular data using a local linear features layer (ie, a street map with street name and address ranges - similar to geocoding in ...
3
votes
1answer
3k views

How to reverse geocode without Google?

I have a basic tracking system i've written with OpenLayers using google and openstreetmap and I want to use geocoding to get street names etc However, I'm a bit confused. I was hoping there was a ...
7
votes
4answers
2k views

Does anyone use TRS (Township, Range, Section) data?

I recently had a request for TRS/PLSS data and I didn't know anything about it. I have researched it and it looks like it is purely mathematical (for the most part) based on geo-coordinates but I'm ...
5
votes
5answers
4k views

Open Source Address Correction / Parser with Fuzzy Matching

Here is a a little bit of a detailed question related to address parsing/geocoding which I feel should be interesting to many users. So, essentially I am curious to know if anyone has had any ...
7
votes
5answers
10k views

How to Geocode 300,000 addresses on the fly?

I have a database which has 300,000 address, which are to be shown on map. I know if I geo-code all the address it will be too expensive for me. So I was wondering if it is possible to geo-code the ...
1
vote
2answers
733 views

How to make distance calculated using Latitude and Longitude more accurate

I'm coding a Web App whereby users can choose their city (start) and a destination city, and find out the approximate distance between both cities, using Latitude and Longitude of both cities to ...
9
votes
3answers
6k views

Does Leaflet JS API provide a Geocoding service?

I am considering replacement of Google Maps with Open Street Maps and the Leaflet JS API. Does the Leaflet JS API provide a Geocoding service?
1
vote
1answer
181 views

Demographic Info within 3 miles of longitude and latitude

I want to get demographic information within three or five miles of a location given its longitude and latitude. The demographic info I am looking for include number of people, age distribution, ...
1
vote
1answer
2k views

Resizing and Reshaping features in Openlayers

Resizing and Reshaping features in Openlayers. I have a map with Openlayers and some controls to draw and modify Features. I need to activate the Resize and Drag and Rotate check button fields as ...
5
votes
1answer
721 views

Different searching results in local Nominatim and openstreetmap.org

I've just installed Nominatim using this guide. I've successfully import fresh osm.bz2 file with data for Saint-Petersburg, Russia into my postgresql database. Nominatim search script works, but it ...
4
votes
1answer
755 views

Bing's geocoder with GeoPy not returning a zipcode

I'm just getting started with GeoPy and have been running some tests to determine the quality of the different available geocoders. I have noticed that Bing's geocoder is more accurate than Google's ...
3
votes
4answers
4k 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 ...
1
vote
1answer
69 views

UK Building co-ordinates web service

Within the UK, do any commercial web services offer building level geocoding to a coordinate? If so what level of accuracy is available?
19
votes
9answers
10k views

Bulk Geocode 20 million records

Are there any free or reasonably priced databases for the US which can be searched and return latitude and longitude information?
0
votes
2answers
2k views

How to get address coordinates from OSM?

I've got an osm file containing the city I live in. Now I've got a tool to render and display it in the browser (mapnik+postgis+tilecache+openlayers+geoext) and the task is to make an address search. ...
2
votes
4answers
7k views

How to use Google Maps V3 Geocode with Openlayers

How to use Google Maps V3 Geocode with Openlayers. Below is my code but the function does not execute when I try to integrate it with Openlayers. This works with my original google v3 file. Below is 2 ...
4
votes
1answer
571 views

Is there an open source tool for both road network analysis and geocoding?

Is there any one open source software package that can perform both road network analysis and geocoding?