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Conversion of coordinates and map positions among different map projections reference to the same datum may be accomplished either through direct translation formulas from one projection to another, or by first converting from a projection to an intermediate coordinate system, such as ECEF, then converting from ECEF to projection . The formulas ...
Choose one of the tables depending on whether you want degrees-minutes-seconds format or decimal degrees format; Find the column that is closest to the latitude of your object; Find the row that is closest to the size of your object; Note the coordinates precision at the intersection of your row and column
Libre Map Project - As part of The Libre Map Project I've created a database with all the GNIS place names from the USGS. It displays the Latitude and Longitude in decimal format so you don't have to convert. To display a list of every town, county, villag, etc., select a state and set the Feature Type to "civil". All data and queries are Free.
Convert decimal degrees into degrees, minutes, seconds. Archived 2012-11-07 at the Wayback Machine – info about decimal to sexagesimal conversion. Convert decimal degrees into degrees, minutes, seconds; Distance calculation based on latitude and longitude – JavaScript version; 16th Century Latitude Survey
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.
Coordinate values (latitude, longitude, and altitude) should be delimited by spaces. The decimal point is a part of the value, thus must usually be configured by the operating system. [a] Multiple locations should be represented by multiple lines. Latitude and longitude should be displayed by sexagesimal fractions (i.e. minutes and seconds).
The default map image, without "Image:" or "File:" image1 = United States San Francisco Bay Area location map.svg An alternative map image, usually a relief map, which can be displayed via the relief or AlternativeMap parameters; top = 38.2033 Latitude at top edge of map, in decimal degrees; bottom = 37.1897 Latitude at bottom edge of map, in ...
NOAA provides a converter between the two systems. [12] The practical impact is that if you use a modern GPS device set to work in NAD 83 or WGS 84 to navigate to NAD 27 coordinates (as from a topo map) near Seattle , you would be off by about 95 meters (not far enough west), and you'd be about 47 meters off near Miami (not far enough north ...