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Decimal degrees (DD) is a notation for expressing latitude and longitude geographic coordinates as decimal fractions of a degree. DD are used in many geographic information systems (GIS), web mapping applications such as OpenStreetMap, and GPS devices. Decimal degrees are an alternative to using degrees-minutes-seconds notation. As with ...
Longitude: from West to East this map definition covers 1.0574 degrees. At an image width of 200 pixels, that is 0.0053 degrees per pixel. At an image width of 1000 pixels, that is 0.0011 degrees per pixel. Latitude: from North to South this map definition covers 1.0136 degrees. At an image height of 200 pixels, that is 0.0051 degrees per pixel.
Degrees, minutes and seconds, when used, must each be separated by a pipe ("|"). Map datum must be WGS84 if possible (except for off-Earth bodies). Avoid excessive precision (0.0001° is <11 m, 1″ is <31 m). Maintain consistency of decimal places or minutes/seconds between latitude and longitude. Latitude (N/S) must appear before longitude (E/W).
Geographical distance or geodetic distance is the distance measured along the surface of the Earth, or the shortest arch length.. The formulae in this article calculate distances between points which are defined by geographical coordinates in terms of latitude and longitude.
M: Ratio of the speed to the speed of sound [note 1] in the medium (unitless). ≈ 340 m/s in air at sea level ≈ 295 m/s in air at jet altitudes metre per second (SI unit) m/s ≡ 1 m/s = 1 m/s mile per hour: mph ≡ 1 mi/h = 0.447 04 m/s: mile per minute: mpm ≡ 1 mi/min = 26.8224 m/s: mile per second: mps ≡ 1 mi/s = 1 609.344 m/s
At an image width of 200 pixels, that is 0.0019 degrees per pixel. At an image width of 1000 pixels, that is 0.0004 degrees per pixel. Latitude: from North to South this map definition covers 0.1971 degrees. At an image height of 200 pixels, that is 0.001 degrees per pixel. At an image height of 1000 pixels, that is 0.0002 degrees per pixel.
At an image width of 200 pixels, that is 0.0049 degrees per pixel. At an image width of 1000 pixels, that is 0.001 degrees per pixel. Latitude: from North to South this map definition covers 1.11 degrees. At an image height of 200 pixels, that is 0.0056 degrees per pixel. At an image height of 1000 pixels, that is 0.0011 degrees per pixel.
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