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  1. For different geographic regions, other datum systems can be used. Prior to the development of the Universal Transverse Mercator coordinate system, several European nations demonstrated the utility of grid-based conformal maps by mapping their territory during the interwar period.

  2. Cartesian coordinate system with a circle of radius 2 centered at the origin marked in red. The equation of a circle is (x − a)2 + (y − b)2 = r2 where a and b are the coordinates of the center (a, b) and r is the radius. Cartesian coordinates are named for René Descartes, whose invention of them in the 17th century revolutionized ...

  3. Geographic coordinate system. Longitude lines are perpendicular to and latitude lines are parallel to the Equator. GCS ( Geographic Coordinate System) ni nthowa yakuyezgera malo pa caru nga ni latitude na longitude. Ndilo ni languro lapachanya chomene, lakale chomene, na lakugwiliskirika ntchito chomene pa vinthu vyakupambanapambana ivyo ...

  4. A geographic information system ( GIS) consists of integrated computer hardware and software that store, manage, analyze, edit, output, and visualize geographic data. [1] [2] Much of this often happens within a spatial database, however, this is not essential to meet the definition of a GIS. [1] In a broader sense, one may consider such a ...

  5. The State Plane Coordinate System ( SPCS) is a set of 125 geographic zones or coordinate systems designed for specific regions of the United States. Each U.S. state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 108 zones in the contiguous United States, with 10 more in Alaska, five in ...

  6. 地理座標系(ちりざひょうけい、英: Geographic coordinate system )とは、地球および天体上の地点を表すための座標系である。 地理座標は、通常は地球を 回転楕円体 ( 地球楕円体 )と見なし、その表面上における水平位置を表す 経緯度 と垂直位置を表す 高度 との組み合わせで表現される。