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1. ### en.wikipedia.org › wiki › Geographic_coordinate_systemGeographic coordinate system - Wikipedia

The geographic coordinate system (GCS) is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the 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.

• Decimal Degrees

Decimal degrees (DD) is a notation for expressing latitude...

2. ### simple.wikipedia.org › wiki › Geographic_coordinateGeographic coordinate system - Simple English Wikipedia, the ...

A geographical coordinate system is a coordinate system. This means that every place can be specified by a set of three numbers, called coordinates. A full circle can be divided into 360 degrees (or 360°); this was first done by the Babylonians; Ancient Greeks, like Ptolemy later extended the theory. Today, degrees are divided further.

3. ### en.wikipedia.org › wiki › Coordinate_systemCoordinate system - Wikipedia

Coordinate system For geographical coordinates on Wikipedia, see Template:Coord. The spherical coordinate system is commonly used in physics. It assigns three numbers (known as coordinates) to every point in Euclidean space: radial distance r, polar angle θ ( theta ), and azimuthal angle φ ( phi ). The symbol ρ ( rho) is often used instead of r.

4. ### www.wikiwand.com › en › Geographic_coordinate_systemGeographic coordinate system - Wikiwand

The geographic coordinate system is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the 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.

5. ### desktop.arcgis.com › en › arcmapWhat are geographic coordinate systems? - Esri

A geographic coordinate system (GCS) uses a three-dimensional spherical surface to define locations on the earth. A GCS is often incorrectly called a datum, but a datum is only one part of a GCS. A GCS includes an angular unit of measure, a prime meridian, and a datum (based on a spheroid ).

6. ### www.ibm.com › docs › enGeographic coordinate systems - IBM

Geographic coordinate systems. A geographic coordinate system uses a three-dimensional spherical surface to determine locations on the earth. Any location on earth can be referenced by a point with longitude and latitude coordinates. For example, Figure 1 shows a geographic coordinate system where a location is represented by the coordinates longitude 80 degree East and latitude 55 degree North.

7. ### simple.wikipedia.org › wiki › Coordinate_systemCoordinate system - Simple English Wikipedia, the free ...

A coordinate system is a system of numbers used to uniquely determine the position of a point. For two-dimensional systems, the numbers ( scalars) are in ordered pairs. More dimensions call for more numbers. Related pages [ change | change source] Analytic geometry Cartesian coordinate system Celestial coordinate system Polar coordinate system

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