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A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. 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.
Mar 10, 2024 · Geodesists use coordinate reference systems such as WGS84, NAD27, and NAD83. In each coordinate system, geodesists use mathematics to give each position on Earth a unique coordinate. A geographic coordinate system defines two-dimensional coordinates based on the Earth’s surface.
Jul 1, 2022 · Examples of projected coordinate systems include Universal Transverse Mercator (UTM), State Plane Coordinate System (SPCS), and Lambert Conformal Conic. Geographic Coordinate System Units The units of measurement for degrees of longitude (x-coordinates) and degrees of latitude (y-coordinates) in geographic coordinate systems, often known as GCS ...
May 21, 2023 · Coordinate systems are frameworks that are used to define unique positions. For instance, in geometry, we use x (horizontal) and y (vertical) coordinates to define points on a two-dimensional plane. The coordinate system used to define locations on the three-dimensional earth is the geographic coordinate system (GCS), based on a sphere or spheroid.
latitude and longitude, in cartography, a coordinate system used to determine and describe the position of any place on Earth’s surface. Latitude is a measurement of a location north or south of the Equator.
- The Editors of Encyclopaedia Britannica
All spatial data must first address the curved surface of the earth, thus all coordinate systems will have a geographic coordinate system “core” that defines the spheroid, geoid, units of measure, and prime meridian on which all further measurements and calculations will be based.
10. Geographic Coordinate System. Figure 2.11.1 The geographic coordinate system. Credit: David DiBiase. Longitude specifies positions east and west as the angle between the prime meridian and a second meridian that intersects the point of interest.
