A 'geo' URI is a URI scheme defined by the Internet Engineering Task Force's RFC 5870 (published 8 June 2010)^[1] as:

a Uniform Resource Identifier (URI) for geographic locations using the 'geo' scheme name. A 'geo' URI identifies a physical location in a two- or three-dimensional coordinate reference system in a compact, simple, human-readable, and protocol-independent way.^[1]

The current revision of the vCard specification^[2] supports 'geo' URIs in a vCard's "GEO" property, and the GeoSMS standard uses 'geo' URIs for geotagging SMS messages.

A 'geo' URI is not to be confused with the site GeoUrl^[3] (which implements ICBM address).

Example[link]

A simple 'geo' URI might look like:

geo:37.786971,-122.399677

where the two numerical values represent latitude and longitude respectively,^[1] and are separated by a comma.^[1] If a third comma-separated value is present, it represents altitude.^[1] The 'geo' URI also allows for an optional "uncertainty" value, separated by a semicolon, representing the uncertainty of the location in meters, and is described using the "u" URI parameter.^[1] A 'geo' URI with an uncertainty parameter looks as follows:

geo:37.786971,-122.399677;u=35

A 'geo' URI may, for example, be included on a web page, as HTML:

<a href="geo:37.786971,-122.399677;u=35">Wikimedia Headquarters</a>

so that a 'geo' URI-aware user agent such as a web browser could launch the user's chosen mapping service; or it could be used in an Atom feed or other XML file.

Coordinate reference systems[link]

The default coordinate reference system (CRS) used is the World Geodetic System 1984 (WGS-84),^[1] for planet Earth although other CRS, once defined, may be specified, using the "crs" URI parameter,^[4] also separated by a semicolon. Such CRSs may include both other terrestrial systems and those for non-terrestrial coordinates such as those on the Moon or Mars.

A 'geo' URI for a hypothetical lunar CRS created in 2011 might be:

geo:37.786971,-122.399677;u=35;crs=Moon-2011

The order in which the semicolon-separated parameters occur is not significant,^[1] and 'crs' parameter values are case-insensitive,^[1] so the above example is exactly equivalent to:

geo:37.786971,-122.399677;crs=moon-2011;u=35

References[link]

External links[link]

• RFC5870
• Geo URI

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GEO or Geo may refer to any of the following:

In computational & scientific use:

• GEO (magazine), a popular scientific magazine
• GEO 600, a detector for gravitational radiation
• Global Environment Outlook, an environmental assessment produced by the United Nations
• Geo (microformat), a microformat for marking up geographical coordinates in (X)HTML
• Geo URI, a IETF proposed standard for making URIs for physical locations
• Gene Expression Omnibus, a National Center for Biotechnology Information database for gene expression
• Geostationary Earth orbit, another name for geostationary orbit, a geosynchronous orbit directly above the Earth's equator.

In commercial use:

• Geo (marketing), a discipline within marketing analysis
• Geo TV, a leading television channel in Pakistan
• Geo (automobile), a defunct brand of entry-level cars produced by General Motors
• GEO Group, a prison corporation

People:

Look up Geo. in Wiktionary, the free dictionary.

• Geo. is sometimes an abbreviation of the name George
• Rosan Geoman, known as Geo, a German music producer and composer
• Geo Bogza, a Romanian poet and essayist
• Geo Stelar is the main protagonist in Mega Man Star Force
• Christian Geo Heltboe, Danish comedian known by his middle name Geo

As a group:

• Grupo Especial de Operaciones, a division of the Spanish police
• General Education Officer, the basic rank of teachers of the Ministry of Education in Singapore
• Group on Earth Observations, an intergovernmental organization

As a place:

• GEO, the IATA code for Cheddi Jagan International Airport
• Estadio Casas GEO, stadium in Mexicali, Mexico
• Geo (landscape), a creek (inlet) or gulley in the Orkney and Shetland Islands
• The IOC country code and three letter country code for  Georgia, a Eurasian country
• Geo City, a fictional city in the videogame Raw Danger

As a prefix: geo- is taken from the Greek word γη or γαια meaning "earth", usually in the sense of "ground or land". Geo- is thus a prefix for many words dealing in some way with the earth, including:

Look up geo-, geography, geology, geopolitics, or geothermal in Wiktionary, the free dictionary.

• Geography, the study of the Earth and its features
  • Geology, the study of the Earth's structure
  • Geopolitics, the analysis of history, geography and social science with respect to international politics
  • Geodesy, also known as geodetics, the study of the measurement and representation of the earth

• Geometer moth, the larvae of which appear to "measure the earth" as they move in a looping fashion
• Geometry, the study of spatial relationships
  • Geocentric, a model of the universe that places the earth at its centre
    • Geostationary orbit, a circular orbit directly above the Earth's equator
    • Geosynchronous orbit, an orbit that has the same period as the Earth's sidereal rotation

• Geothermal (geology), heat sources from within the Earth
  • Geo-exchange, a heating and cooling system

• Geocaching, an outdoor activity that involves using navigational techniques to find geocaches

• Geocoding or GeoTagging, encoding coordinates in to features, images, web pages and other data records
  • Geolocation, the science of determining the real-world location of a website or website visitor

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.

Look up uri, Uri, URI, or urî in Wiktionary, the free dictionary.

Uri or URI may refer to:

Places[link]

• Uri (Island), off Malekula island in Vanuatu, South Pacific
• Canton of Uri, a state in Switzerland
• Uri, Jammu and Kashmir
• Uri (SS), a city in Sardinia, Italy

People[link]

• Uri (name)
• Uri (Bible), two people in the Bible

Organisations[link]

• Uri Party, a political party in South Korea
• United Religions Initiative, an interfaith organization
• University of Rhode Island
• United Rentals's NYSE symbol

Science, medicine and technology[link]

• Uri (animal), the extinct ancestor of domestic cattle
• Uri (vegetable), an Armenian cucumber
• Ultrasound research interface, software
• Upper respiratory tract infection, including the common cold

Computing[link]

• Uniform resource identifier, is a string of characters used to identify a name or a resource

Other[link]

• Uri, a dog in the book Call It Courage

See also[link]

• Oriya people, an Indian gotra also called Ures

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.