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The history of longitude describes the centuries-long effort by astronomers, cartographers and navigators to discover a means of determining the longitude of any given place on Earth. The measurement of longitude is important to both cartography and navigation. In particular, for safe ocean navigation, knowledge of both latitude and longitude ...
v. t. e. A geographic coordinate system ( GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [ 1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.
English Channel location map.svg. image1. Relief Map of English Channel.png. Module:Location map/data/English Channel is a location map definition used to overlay markers and labels on an equirectangular projection map of English Channel. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Module:Location map/data/USA New York City. Module:Location map/data/USA New York City is a location map definition used to overlay markers and labels on an equirectangular projection map of New York City. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Location map of the District of Columbia. / 38.895; -77.015. Module:Location map/data/USA District of Columbia is a location map definition used to overlay markers and labels on an equirectangular projection map of the District of Columbia. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Module:Location map/data/English Channel is a location map definition used to overlay markers and labels on an equirectangular projection map of English Channel. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Module:Location map/data/USA Washington, D.C. is a location map definition used to overlay markers and labels on an equirectangular projection map of Washington, D.C.. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Longitude at right edge of map, in decimal degrees; Precision. Longitude: from West to East this map definition covers 0.22 degrees. At an image width of 200 pixels, that is 0.0011 degrees per pixel. At an image width of 1000 pixels, that is 0.0002 degrees per pixel. Latitude: from North to South this map definition covers 0.1745 degrees.