location-formats: Difference between revisions
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* [http://geocoder.us/ geocoder] | * [http://geocoder.us/ geocoder] | ||
* You can get coordinates from UK post-codes from [http://www.streetmap.co.uk streetmap] | * You can get coordinates from UK post-codes from [http://www.streetmap.co.uk streetmap] | ||
* Worldwide city level location data (over 4 million entries) is available from the [http://earth-info.nga.mil/gns/html/ GNS]. This is accessible as a REST service from [http://brainoff.com/geocoder/] | |||
== Plazes == | == Plazes == | ||
Revision as of 17:23, 28 June 2005
Location Formats
This is a list of previous efforts at location / geographic ("Geo") data formats and protocols, as background research for developing a location format.
vCard & hCard
vCard (RFC2426) and hcard includes 'adr', a way to markup addresses. There is also a field called 'geo' for lat/long.
ICBM
Comma seperated list of lat/long <meta name="ICBM" content="XXX.XXXXX, XXX.XXXXX">
[1]
GeoUrl
Flickr Geotags
- Flickr GeoTagging A Greasemonkey script for adding lat and long tags to flick pictures. He uses Google Maps to get the lat and long. Users have to enter search terms (address, etc) and then select a point on the google map. Photos are tagged with "geo:lat=xx.xxxx", "geo:lon=xx.xxxx" and "geotagged" and aggregated at [2]
- A Flickr Group related to the topic
- A visual walkthrough of the technique.
- As of today (2005-06-01), 14k photos have been geotagged on Flickr.
A2B
A2B is a location based search engine. Lat and long only. Seems to pick stuff up from geo meta tags. Pages can either be manually entered or pinged. They support lat/long and ICBM meta tags.
RSS
Several people have tried putting geographic information into RSS.
- This site uses icbm coordinates and has plugins for several blogging packages.
- BlogMapper - appears to be adding a namespace to RSS.
- BlogMap - picks up RSS extension and meta tag values
Address2Coordinates
Both of these systems are freely available sources of address to lat/long mappings (US only). I think they're based on US Census data, so they might be up to date.
- TIGER
- FIPS
- geocoder
- You can get coordinates from UK post-codes from streetmap
- Worldwide city level location data (over 4 million entries) is available from the GNS. This is accessible as a REST service from [3]
Plazes
Plazes is a system that does geo-info based on the network access point that the user's computer is connected to. They use tagging to identify locations.
Mapping Sites
Semantic Web
- Geosemantics Interest Group
- Open GeoSpatial Consortium
- GeoOnion - a SW vocuabulary for relating items by distance from each other.
- RDFMap