| Filename extension | .rss, .xml |
|---|---|
| Internet media type | application/rss+xml (Registration Being Prepared)[1] |
| Extended from | XML |
GeoRSS is a specification for encoding location as part of aWeb feed.(Web feeds are used to describe feeds ("channels") of content, such as news articles,Audio blogs,video blogs and textblog entries. Theseweb feeds are rendered by programs such asaggregators andweb browsers.) The name "GeoRSS" is derived fromRSS, the most knownWeb feed 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 GeoRSSGeography Markup Language (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 formalOpen Geospatial Consortium (OGC) GML Application Profile, and supports a greater range of features than GeoRSS Simple, notably coordinate reference systems other thanWGS84 latitude/longitude. There is also aW3C 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 asAtom, theIETF's latest standard for feeds.
Here's a GeoRSS Simple example using Atom.
<?xml version="2.0" encoding="utf-8"?><feedxmlns="http://www.w3.org/2005/Atom"xmlns:georss="http://www.georss.org/georss"><title>Earthquakes</title><subtitle>Internationalearthquakeobservationlabs</subtitle><linkhref="http://example.org/"/><updated>2005-12-13T18:30:02Z</updated><author><name>Dr.ThaddeusRemor</name><email>tremor@quakelab.edu</email></author><id>urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6</id><entry><title>M3.2,MonaPassage</title><linkhref="http://example.org/2005/09/09/atom01"/><id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id><updated>2005-08-17T07:02:32Z</updated><summary>Wejusthadabigone.</summary><georss:point>45.256-71.92</georss:point></entry></feed>
Here is a schema fragment for a GeoRSS GML encoding for RSS 2.0
<?xml version="1.0" encoding="UTF-8"?><rssversion="2.0"xmlns:georss="http://www.georss.org/georss"xmlns:gml="http://www.opengis.net/gml"><channel><link>http://maps.google.com</link><title>CambridgeNeighborhoods</title><description>Oneguy'sviewofCambridge,Massachusetts</description><item><guidisPermaLink="true">00000111c36421c1321d3</guid><pubDate>Thu,05Apr200720:16:31+0000</pubDate><title>CentralSquare</title><description>Theheartandsoulofthe"new"Cambridge.Dependingonwhereyoustand,youcanfeellikeyou'reinthe1970sor2020.</description><author>rajrsingh</author><georss:where><gml:Polygon><gml:exterior><gml:LinearRing><gml:posList>+71.10621642.366661+71.10557642.367104+71.10437842.367134+71.10372942.366249+71.09879342.363331+71.10102842.362541+71.10686542.366123+71.10621642.366661</gml:posList></gml:LinearRing></gml:exterior></gml:Polygon></georss:where></item></channel></rss>
Here is example of W3C geo GeoRSS
<?xml version="1.0"?><?xml-stylesheet href="/eqcenter/catalogs/rssxsl.php?feed=eqs7day-M5.xml" type="text/xsl" media="screen"?><rssversion="2.0"xmlns:geo="http://www.w3.org/2003/01/geo/wgs84_pos#"xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>USGSM5+Earthquakes</title><description>Real-time,worldwideearthquakelistforthepast7days</description><link>https://earthquake.usgs.gov/eqcenter/</link><dc:publisher>U.S.GeologicalSurvey</dc:publisher><pubDate>Thu,27Dec200723:56:15PST</pubDate><item><pubDate>Fri,28Dec200705:24:17GMT</pubDate><title>M5.3,northernSumatra,Indonesia</title><description>December28,200705:24:17GMT</description><link>https://earthquake.usgs.gov/eqcenter/recenteqsww/Quakes/us2007llai.php</link><geo:lat>5.5319</geo:lat><geo:long>95.8972</geo:long></item></channel></rss>