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2. Template:CH1903-WGS84 - Wikipedia

   en.wikipedia.org/wiki/Template:CH1903-WGS84

   This template is designed to convert a set of Swiss coordinates into either the corresponding WGS84 decimal latitude or longitude. It is intended to facilitate the usage of geodata (see {}) in articles about subjects for which only Swiss coordinates are readily available. The template should always be substituted.

3. Geographic coordinate conversion - Wikipedia

   en.wikipedia.org/wiki/Geographic_coordinate...

   The formulas involved can be complex and in some cases, such as in the ECEF to geodetic conversion above, the conversion has no closed-form solution and approximate methods must be used. References such as the DMA Technical Manual 8358.1 [ 15 ] and the USGS paper Map Projections: A Working Manual [ 16 ] contain formulas for conversion of map ...

4. Wikipedia:Obtaining geographic coordinates - Wikipedia

   en.wikipedia.org/wiki/Wikipedia:Obtaining...

   Web Form is free for unlimited queries. International Coverage in most countries. Licensing: Great Circle Mapper: Name search: Has geographic coordinates for airports, heliports, and other facilities which have an IATA or ICAO code. You can also search by location name. Plexscape WS: Google Maps tool – Coordinate converter

5. Well-known text representation of coordinate reference systems

   en.wikipedia.org/wiki/Well-known_text...

   A WKT format is defined to describe the operation methods and parameters used to convert or transform coordinates between two different coordinate reference systems. The WKT 1 and WKT 2 formats are incompatible regarding coordinate operations, because of differences in the modelling. [13]

6. World Geodetic System - Wikipedia

   en.wikipedia.org/wiki/World_Geodetic_System

   The WGS 84 datum surface is an oblate spheroid with equatorial radius a = 6 378 137 m at the equator and flattening f = 1 ⁄ 298.257 223 563. The refined value of the WGS 84 gravitational constant (mass of Earth's atmosphere included) is GM = 3.986 004 418 × 10 14 m 3 /s 2. The angular velocity of the Earth is defined to be ω = 72.921 15 × ...

7. Template:WGS84 angle to distance conversion.svg - Wikipedia

   en.wikipedia.org/wiki/Template:WGS84_angle_to...

   Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Pages for logged out editors learn more

8. Swiss coordinate system - Wikipedia

   en.wikipedia.org/wiki/Swiss_coordinate_system

   As a result, the Swiss Federal Office of Topography decided to launch a new land survey campaign in 1988, with the intention of gathering precise data for the development of a new coordinate system based on WGS84.

9. North American Datum - Wikipedia

   en.wikipedia.org/wiki/North_American_Datum

   The definition of NAD 83(1986) is based on the GRS 80 spheroid, as was WGS 84, so many older publications indicate no difference. WGS 84 subsequently changed to a slightly less flattened spheroid . This change in flattening is about 0.1 mm, a difference so small that computational programs often do not distinguish between the two ellipsoids. [ 13 ]