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Chengdu [a] is the capital city ... The prefecture ranges in latitude from 30° 05' to 31° 26' N, while its longitude ranges from 102° 54' to 104° 53' E, ...
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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.
Module:Location map/data/China Sichuan Chengdu urban is a location map definition used to overlay markers and labels on an equirectangular projection map of Chengdu. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.
Located in the southwest of Chengdu, it is located between latitude 30°12′~30°33′ north and longitude 103°04′~103°45′ east, with a length of 68.5 km from east to west and a width of 38.5 km from north to south. The city covers an area of 1,377 square kilometers.
Geographic coordinate conversion has applications in cartography, surveying, navigation and geographic information systems . In geodesy, geographic coordinate conversion is defined as translation among different coordinate formats or map projections all referenced to the same geodetic datum. [ 1] A geographic coordinate transformation is a ...
Longitude by chronometer is a method, in navigation, of determining longitude using a marine chronometer, which was developed by John Harrison during the first half of the eighteenth century. It is an astronomical method of calculating the longitude at which a position line, drawn from a sight by sextant of any celestial body, crosses the ...
ISO 6709, Standard representation of geographic point location by coordinates, is the international standard for representation of latitude, longitude and altitude for geographic point locations. The first edition ( ISO 6709:1983) was developed by ISO/IEC JTC 1 /SC 32. Later the standard was transferred to ISO/TC211, Geographic information ...