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Decimal degrees are an alternative to using sexagesimal degrees (degrees, minutes, and seconds - DMS notation). As with latitude and longitude, the values are bounded by ±90° and ±180° respectively. Positive latitudes are north of the equator, negative latitudes are south of the equator.
This involved geocoding a numerical point location – with a longitude and latitude – to a textual, readable address. 2008 and 2009 saw the growth of interactive, user-oriented geocoding platforms – namely MapQuest, Google Maps, Bing Maps, and Global Positioning Systems (GPS).
Informally, specifying a geographic location usually means giving the location's latitude and longitude. The numerical values for latitude and longitude can occur in a number of different units or formats: [2] sexagesimal degree: degrees, minutes, and seconds : 40° 26′ 46″ N 79° 58′ 56″ W
Move a marker on a Google Maps map (map or satellite view) and get Latitude, Longitude for the location. User interface in English language. Mapcoordinates: Map to coordinates: Move a marker on a Google Maps map (map or satellite view) and get Latitude, Longitude and Elevation for the location. User interface in German language. NASA World Wind ...
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 type of the various spatial reference systems that are in use, and forms the basis for most others.
Longitude: from West to East this map definition covers 0.9389 degrees. At an image width of 200 pixels, that is 0.0047 degrees per pixel. At an image width of 1000 pixels, that is 0.0009 degrees per pixel. Latitude: from North to South this map definition covers 0.4659 degrees. At an image height of 200 pixels, that is 0.0023 degrees per pixel.
Until then, all maps had used a rectangular grid with latitude and longitude as straight lines intersecting at right angles. [4]: 543 [5]: 90 For large areas this leads to unacceptable distortion, and for his map of the inhabited world, Ptolemy used projections (to use the modern term) with curved parallels that reduced the distortion.
Longitude: from West to East this map definition covers 9.1 degrees. At an image width of 200 pixels, that is 0.0455 degrees per pixel. At an image width of 1000 pixels, that is 0.0091 degrees per pixel. Latitude: from North to South this map definition covers 4.5 degrees. At an image height of 200 pixels, that is 0.0225 degrees per pixel.