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What3words divides the world into a grid of 57 trillion 3-by-3-metre (10 ft × 10 ft) squares, each of which has a three-word address. The company says they do their best to remove homophones and spelling variations; [25] however, at least 32 pairs of English near-homophones still remain.
PolarView includes a GRIB download service for GFS (wind/atmospheric pressure), NWW3 (wave height/direction) and RTOFS (Atlantic currents) data from NOAA. Available for Linux, Mac and Windows. OpenCPN Open Source Chart Plotter / Marine Navigator. For day to day cruising or advance route planning. (NOTE: GRIB support is available since version 1 ...
The World Geographic Reference System (GEOREF) is a geocode, a grid-based method of specifying locations on the surface of the Earth. GEOREF is essentially based on the geographic system of latitude and longitude , but using a simpler and more flexible notation .
World Meteorological Organization (WMO) squares is a system of geocodes that divides a world map with latitude-longitude gridlines into grid cells of 10° latitude by 10° longitude, each with a unique, 4-digit numeric identifier.
Briefly, an example of a full USNG spatial address (grid reference) is: 18S UJ 23371 06519 (This example used by the FGDC is the full one-meter grid reference of the Jefferson Pier in Washington DC.) [10] This full form (15 characters) uniquely identifies a single one-meter grid square out of the entire surface of the earth.
In geodesy, geographic coordinate conversion is defined as translation among different coordinate formats or map projections all referenced to the same geodetic datum. [1] A geographic coordinate transformation is a translation among different geodetic datums. Both geographic coordinate conversion and transformation will be considered in this ...
Since, in the UK at least, a 6-figure grid reference identifies a square of 100-metre sides, an 8-figure reference would identify a 10-metre square, and a 10-digit reference a 1-metre square. In order to give a standard 6-figure grid reference from a 10-figure GPS readout, the 4th, 5th, 9th and 10th digits must be omitted, so it is important ...
To reduce the number of figures needed to give a grid reference, the grid is divided into 100 km squares, which each have a two-letter code. National Grid positions can be given with this code followed by an easting and a northing both in the range 0 and 99999m. The projection formulae differ slightly from the Redfearn formulae presented here.