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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. [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.
- Geodetic Datum
A geodetic datum or geodetic system (also: geodetic...
- Decimal Degrees
Decimal degrees (DD) is a notation for expressing latitude...
- Spatial Reference System
A spatial reference system (SRS) or coordinate reference...
- Geographical Distance
View from the Swabian Jura to the Alps. Geographical...
- Geodetic Datum
Jul 1, 2022 · Learn about the types, units, and datums of geographic coordinate systems that define the location of features on the Earth's surface. Compare and contrast geographic and projected coordinate systems, and see examples of UTM, SPCS, and datum transformations.
Mar 10, 2024 · Learn how to use latitude and longitude to locate any position on Earth with a geographic coordinate system. Find out the difference between degrees-minutes-seconds and decimal degrees, and the common coordinate reference systems such as WGS84 and NAD83.
May 21, 2023 · The coordinate system used to define locations on the three-dimensional earth is the geographic coordinate system (GCS), based on a sphere or spheroid. A spheroid (a.k.a. ellipsoid) is simply a slightly wider sphere than it is tall and approximates the actual shape of the earth more closely.
Mar 25, 2024 · Learn how to use the coordinate system of latitude and longitude to locate any place on Earth's surface. Find out the definitions, examples, diagrams, facts, and technical details of this system.
- The Editors of Encyclopaedia Britannica
Learn about the components and properties of geographic coordinate systems, which use latitude and longitude to locate points on the earth's surface. Explore how geographic coordinate systems are curved models that are flattened and projected for spatial data analysis and display.
Learn how to use longitude and latitude to specify positions on the Earth's surface. Find out how parallels and meridians are defined and how they vary in length and angle.
