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  2. List of national coordinate reference systems - Wikipedia

    en.wikipedia.org/wiki/List_of_national...

    The list below is a collection of available official national projected Coordinate Reference Systems. Links to the relevant unique identification codes of the EPSG Geodetic Parameter Dataset , the most comprehensive collection Coordinate Reference Systems, are provided in the table.

  3. Postal codes in Singapore - Wikipedia

    en.wikipedia.org/wiki/Postal_codes_in_Singapore

    Using the 6-digit postal code to look up the Central Public Lirbary in the OneMap application. Due to Singapore being a small city-state and most buildings having singular, dedicated delivery points, the postal code can be used as a succinct and precise identifier of buildings in Singapore, akin to a geocode.

  4. List of postal codes - Wikipedia

    en.wikipedia.org/wiki/List_of_postal_codes

    The letters CP or C.P. are often written in front of the postcode. This is not a country code, but simply an abbreviation for "code postal". Serbia: 1 January 2005 RS: NNNNN Poštanski adresni kod (PAK) Seychelles: SC: no codes Sierra Leone: SL: no codes Sint Maarten: SX: no codes Singapore: 6 March 1950 SG: NN Singapore: 1 July 1979 SG: NNNN ...

  5. Geographic coordinate conversion - Wikipedia

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

    The High Accuracy Reference Network (HARN), a high accuracy version of the NADCON transforms, have an accuracy of approximately 5 centimeters. The National Transformation version 2 is a Canadian version of NADCON for transforming between NAD 1927 and NAD 1983. HARNs are also known as NAD 83/91 and High Precision Grid Networks (HPGN). [27]

  6. Address geocoding - Wikipedia

    en.wikipedia.org/wiki/Address_geocoding

    Once a match is made, the location of the reference feature can be attached to the input row. These algorithms are of two types: Direct match The geocoder expects each input item to directly correspond to a single entire feature in the reference dataset. For example, a country or zip code, or matching street addresses to building point ...

  7. Geocode - Wikipedia

    en.wikipedia.org/wiki/Geocode

    There are also mixed systems, using a syntactical partition, where for example the first part (code prefix) is a name-code and the other part (code suffix) is a grid-code. Example: Mapcode entrance to the elevator of the Eiffel Tower in Paris is FR-4J.Q2, where FR is the name-code [9] and 4J.Q2 is the grid-code. Semantically France is the ...

  8. Projected coordinate system - Wikipedia

    en.wikipedia.org/wiki/Projected_coordinate_system

    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 ...

  9. Military Grid Reference System - Wikipedia

    en.wikipedia.org/wiki/Military_Grid_Reference_System

    An MGRS grid reference is a point reference system. When the term 'grid square' is used, it can refer to a square with a side length of 10 km (6 mi), 1 km, 100 m (328 ft), 10 m or 1 m, depending on the precision of the coordinates provided.