GeoRSS is a specification for encoding location as part of a

Web feed On the World Wide Web, a web feed (or news feed) is a data format used for providing users with frequently updated content. Content distributors ''syndicate'' a web feed, thereby allowing users to ''subscribe'' a channel to it by adding the feed ...

. ''(Web feeds are used to describe feeds ("channels") of content, such as news articles, Audio blogs,

video blogs A video blog or video log, sometimes shortened to vlog (), is a form of blog for which the medium is video. Vlog entries often combine embedded video (or a video link) with supporting text, images, and other metadata. Entries can be recorded i ...

and text

blog A blog (a truncation of "weblog") is a discussion or informational website published on the World Wide Web consisting of discrete, often informal diary-style text entries (posts). Posts are typically displayed in reverse chronological order ...

entries. These

web feed On the World Wide Web, a web feed (or news feed) is a data format used for providing users with frequently updated content. Content distributors ''syndicate'' a web feed, thereby allowing users to ''subscribe'' a channel to it by adding the feed ...

s are rendered by programs such as aggregators and

web browser A web browser is application software for accessing websites. When a user requests a web page from a particular website, the browser retrieves its files from a web server and then displays the page on the user's screen. Browsers are used on ...

s.)'' The name "GeoRSS" is derived from

RSS RSS ( RDF Site Summary or Really Simple Syndication) is a web feed that allows users and applications to access updates to websites in a standardized, computer-readable format. Subscribing to RSS feeds can allow a user to keep track of many di ...

, the most known

and syndication format. In GeoRSS, location content consists of geographical points, lines, and polygons of interest and related feature descriptions. GeoRSS feeds are designed to be consumed by geographic software such as map generators. By building these encodings on a common information model, the GeoRSS collaboration is promoting interoperability and "upwards-compatibility" across encodings. At this point, the GeoRSS collaboration has completed work on two primary encodings that are called GeoRSS

Geography Markup Language The Geography Markup Language (GML) is the XML grammar defined by the Open Geospatial Consortium (OGC) to express geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic ...

(GML) and GeoRSS Simple. GeoRSS-Simple is a very lightweight format that supports basic geometries (point, line, box, polygon) and covers the typical use cases when encoding locations. GeoRSS GML is a formal

Open Geospatial Consortium The Open Geospatial Consortium (OGC), an international voluntary consensus standards organization for geospatial content and location-based services, sensor web and Internet of Things, GIS data processing and data sharing. It originated in 1994 ...

(OGC) GML Application Profile, and supports a greater range of features than GeoRSS Simple, notably coordinate reference systems other than

WGS84 The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also descr ...

latitude/longitude. There is also a

W3C The World Wide Web Consortium (W3C) is the main international standards organization for the World Wide Web. Founded in 1994 and led by Tim Berners-Lee, the consortium is made up of member organizations that maintain full-time staff working to ...

GeoRSS serialization, which is older and partly deprecated but still the most widely used. GeoRSS can be used to extend both RSS 1.0 and 2.0, as well as

Atom Every atom is composed of a nucleus and one or more electrons bound to the nucleus. The nucleus is made of one or more protons and a number of neutrons. Only the most common variety of hydrogen has no neutrons. Every solid, liquid, gas, and ...

, the

IETF The Internet Engineering Task Force (IETF) is a standards organization for the Internet and is responsible for the technical standards that make up the Internet protocol suite (TCP/IP). It has no formal membership roster or requirements and a ...

's latest standard for feeds.

Examples

Here's a GeoRSS Simple example using Atom. Earthquakes International earthquake observation labs 2005-12-13T18:30:02Z Dr. Thaddeus Remor tremor@quakelab.edu urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6 M 3.2, Mona Passage urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a 2005-08-17T07:02:32Z

We just had a big one.

45.256 -71.92 Here is a schema fragment for a GeoRSS GML encoding for RSS 2.0 http://maps.google.com Cambridge Neighborhoods One guy's view of Cambridge, Massachusetts 00000111c36421c1321d3 Thu, 05 Apr 2007 20:16:31 +0000 Central Square The heart and soul of the "new" Cambridge. Depending on where you stand, you can feel like you're in the 1970s or 2020. rajrsingh +71.106216 42.366661 +71.105576 42.367104 +71.104378 42.367134 +71.103729 42.366249 +71.098793 42.363331 +71.101028 42.362541 +71.106865 42.366123 +71.106216 42.366661 Here is example of W3C geo GeoRSS USGS M5+ Earthquakes Real-time, worldwide earthquake list for the past 7 days https://earthquake.usgs.gov/eqcenter/ U.S. Geological Survey Thu, 27 Dec 2007 23:56:15 PST Fri, 28 Dec 2007 05:24:17 GMT M 5.3, northern Sumatra, Indonesia December 28, 2007 05:24:17 GMT https://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2007llai.php 5.5319 95.8972 *

References

External links

Georss.org (archived 2020-09-09)
web site for GeoRSS specifications (describes all 3 encodings) and examples
OGC Whitepaper (pdf)
Open Geospatial Consortium: An Introduction to GeoRSS. {{Web syndication Open Geospatial Consortium Geographical technology Web mapping

Examples

See also

References

External links