Introduction

A map datum is a reference from which measurements are made. In geodesy, a geodetic or map datum is a set of reference points on the earth's surface against which position measurements are made, and (often) an associated model of the shape of the earth (reference ellipsoid) to define a geographic coordinate system. Some examples of geodetic datums are: NAD27, NAD83, ED50 etc...

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Parameters

An map datum can be defined in the Eye4Software Hydromagic using 7 parameters, also called Helmert-7 parameters:

• Scale Factor;
• Translation X ( tX );
• Translation Y ( tY );
• Translation Z ( tZ );
• Rotation X ( rX );
• Rotation Y ( rY );
• Rotation Z ( rZ );

Also an ellipsoid has to be specified when a map datum is defined.

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List of map datums supported by Hydromagic

• Abidjan 1987
• Accra
• Aden 1925
• Adindan
• Afgooye
• Agadez
• AGD66
• AGD66 (NTv2)
• AGD84
• AGD84 (NTv2)
• Ain el Abd
• Albanian 1987
• American Samoa 1962
• Amersfoort
• Ammassalik 1958
• Anguilla 1957
• Antigua 1943
• Aratu
• Arc 1950
• Arc 1960
• Aruba Datum of 1951
• Ascension Island 1958
• ATF (Paris)
• ATS77
• Australian Antarctic
• Ayabelle Lighthouse
• Azores Central 1948
• Azores Central 1995
• Azores Occidental 1939
• Azores Oriental 1940
• Azores Oriental 1995
• Barbados 1938
• Batavia
• Batavia (Jakarta)
• BDA2000
• Beduaram
• Beijing 1954
• Bekaa Valley 1920
• Belge 1950
• Belge 1950 (Brussels)
• Belge 1972
• Bellevue
• Bermuda 1957
• Bern 1898 (Bern)
• Bern 1938
• Bioko
• Bissau
• Bogota 1975
• Bogota 1975 (Bogota)
• Bukit Rimpah
• Cadastre 1997
• Camacupa
• Camp Area Astro
• Campo Inchauspe
• Cape
• Cape Canaveral
• Carthage
• Carthage (Paris)
• CGRS93
• CH1903
• CH1903+
• Chatham Islands 1971
• Chatham Islands 1979
• Chilean 1963
• China Geodetic Coordinate System 2000
• Chos Malal 1914
• CHTRF95
• Chua
• CIGD11
• Cocos Islands 1965
• Combani 1950
• Conakry 1905
• Corrego Alegre 1961
• Corrego Alegre 1970-72
• Costa Rica 2005
• Cote d'Ivoire
• Crozet 1963
• CSG67
• Curacao Datum of 1951
• Dabola 1981
• Datum 73
• DB_REF
• Dealul Piscului 1930
• Dealul Piscului 1970
• Deception Island
• Deir ez Zor
• DGN95
• DHDN
• DHDN (NTv2)
• Diego Garcia 1969
• Dominica 1945
• Douala
• Douala 1948
• DRUKREF 03
• Easter Island 1967
• ED50
• ED50 Cyprus
• ED50 Egypt
• ED50 Finland
• ED50 Greece
• ED50 Iran
• ED50 Ireland
• ED50 Malta
• ED50 Middle East
• ED50 Norway
• ED50 Portugal
• ED50 Sardinia
• ED50 Sicily
• ED50 Spain
• ED50 Tunisia
• ED50 United Kingdom
• ED50 Western Europe
• ED50(ED77)
• ED79
• ED87
• EFATE-IGN 1957
• Egypt 1907
• Egypt 1930
• Egypt Gulf of Suez S-650 TL
• ELD79
• EST92
• EST97
• ETRS89
• Fahud
• Fatu Iva 72
• FD54
• FD58
• FEH2010
• Fiji 1956
• Fiji 1986
• fk89
• Fort Marigot
• Gambia
• Gan 1970
• Gandajika
• Gandajika 1970
• Garoua
• Garoua
• GDA94
• GDBD2009
• GDM2000
• GGRS87
• GR96
• Grand Cayman 1959
• Grand Comoros
• Greek
• Greek (Athens)
• Grenada 1953
• Guadeloupe 1948
• Guadeloupe Fort Marigot
• Guadeloupe Ste Anne
• Guam 1963
• Gulshan 303
• GUX1 Astro
• Guyane CSG67 UTM fuseau 21
• Guyane Francaise
• Hanoi 1972
• Hartebeesthoek94
• HD1909
• HD72
• Helle 1954
• Herat North
• Hito XVIII 1963
• Hjorsey 1955
• Hong Kong 1924 (HKNT24)
• Hong Kong 1963
• Hong Kong 1963(67)
• Hong Kong 1980
• HTRS07
• HTRS96
• Hu Tzu Shan 1950
• ID74
• IG05 Intermediate CRS
• IG05/12 Intermediate CRS
• IGC 1962 6th Parallel South
• IGCB 1955
• IGD05
• IGD05
• IGD05/12
• IGM95
• IGN 1962 Kerguelen
• IGN 1963 (Hiva, Oa, Mohotani)
• IGN 1972 (Eiao, Hiva Oa, Mohotani) Marquises
• IGN 1972 Grande-Terre / Ile des Pins
• IGN 1972 Nuku Hiva
• IGN Astro 1960
• IGN53 (IGN Raiatea-Tahaa) Raiatea-Bora-Huahine
• IGN53 Mare
• IGN56 Lifou
• IGN63 Hiva Oa
• IGN72 Grand Terre
• IGN72 Grande Terre
• IGN72 Nuku Hiva
• IGN79 (Tahiti) Iles de la Societe
• IGRS
• IKBD-92
• Indian 1954
• Indian 1960
• Indian 1975
• IRENET95
• ISN2004
• ISN93
• Israel
• ITRF2000
• ITRF88
• ITRF89
• ITRF90
• ITRF91
• ITRF92
• ITRF93
• ITRF94
• ITRF96
• ITRF97
• Iwo Jima 1945
• JAD2001
• JAD69
• Jamaica 1875
• JGD2000
• JGD2011
• Johnston Island 1961
• Jouik 1961
• K0 1949
• Kalianpur 1880
• Kalianpur 1937
• Kalianpur 1962
• Kalianpur 1975
• Kandawala
• Karbala 1979
• Kasai 1953
• Katanga 1955
• Kerguelen - K0
• Kertau (RSO)
• Kertau 1968
• KKJ
• KOC
• Korea 2000
• Korean 1985
• Korean 1995
• Kousseri
• KUDAMS
• Kusaie 1951
• La Canoa
• Lake
• Lao 1993
• Lao 1997
• Le Pouce 1934
• Leigon
• LGD2006
• Liberia 1964
• Lifou - Iles Loyaute (IGN56)
• Lisbon
• Lisbon (Lisbon)
• Lisbon 1890
• Lisbon 1890 (Lisbon)
• Little Cayman 1961
• LKS92
• LKS94
• LKS94 (ETRS89)
• Locodjo 1965
• Loma Quintana
• Lome
• Luxembourg 1930
• Luzon (Mindanao)
• Luzon 1911
• MACARIO SOLIS
• Madeira 1936
• Madrid 1870 (Madrid)
• Madzansua
• MAGNA-SIRGAS
• Mahe 1971
• Makassar
• Makassar (Jakarta)
• Malongo 1987
• Manoca
• Manoca 1962
• Marcus Island 1952
• Mare - Iles Loyaute (IGN53)
• MARGEN
• Marshall Islands 1960
• Martinique 1938
• Martinique Fort-Desaix
• Massawa
• Maupiti 83
• Mauritania 1999
• Mauritania 1999
• Mayotte Combani
• Merchich
• Mexican Datum of 1993
• Mexico ITRF2008
• MGI
• MGI (Ferro)
• MGI 1901
• Mhast
• Mhast (offshore)
• Mhast (onshore)
• Mhast 1951
• MHEFO 1955 (Fatu Huku)
• MHPF 1969 (Tubuai) Iles Australes
• MHPF67 (Mangereva, Agakauitai, Aukena, Mekiro) Gambiers (Iles)
• MHPF70 (Kauehi) Tuamotu
• Midway 1961
• Minna
• MOLDREF99
• Monte Mario
• Monte Mario (Rome)
• Montjong Lowe
• Montserrat 1958
• Moorea 1987
• Moorea 87
• MOP78
• MOP84 (Fangataufa 1984)
• MOP86 (Apataki, Rapa, Hao) Tuamotu
• MOP90 (Tetiaroa) Iles de la Societe
• MOP92 (Anaa) Tuamotu
• Mount Dillon
• Moznet
• M'poraloko
• NAD27
• NAD27 (NADCON)
• NAD27 Aleutian Islands
• NAD27 Aleutian Islands - East
• NAD27 Aleutian Islands - West
• NAD27 Bahamas
• NAD27 Canada
• NAD27 Canada - Alberta and British Columbia
• NAD27 Canada - East
• NAD27 Canada - Manitoba / Ontario
• NAD27 Canada - NW Territories and Saskatchewan
• NAD27 Canada - Yukon
• NAD27 Canada (NTv2)
• NAD27 Canal Zone
• NAD27 Carribbean
• NAD27 Central America - East
• NAD27 Central America - West
• NAD27 Conus
• NAD27 Cuba
• NAD27 Greenland
• NAD27 Hawaii
• NAD27 Hawaii (NADCON)
• NAD27 Mexico
• NAD27 Michigan
• NAD27 Old Hawaiian
• NAD27 Old Hawaiian - Hawaii
• NAD27 Old Hawaiian - Kauai
• NAD27 Old Hawaiian - Maui
• NAD27 Old Hawaiian - Oahu
• NAD27 Puerto Rico and Virgin Islands (NADCON)
• NAD27 San Salvador
• NAD27 St. George (NADCON)
• NAD27 St. Lawrence (NADCON)
• NAD27 St. Paul (NADCON)
• NAD27 United States - Eastern
• NAD27 United States - Western
• NAD27(76)
• NAD27(CGQ77)
• NAD83
• NAD83 Alabama (HARN)
• NAD83 Arizona (HARN)
• NAD83 Arkansas (HARN)
• NAD83 California - North (HARN)
• NAD83 California - South (HARN)
• NAD83 Colorado (HARN)
• NAD83 Connecticut (HARN)
• NAD83 Florida (HARN)
• NAD83 Georgia (HARN)
• NAD83 Hawaii (HARN)
• NAD83 Idaho and Montana - East (HARN)
• NAD83 Idaho and Montana - West (HARN)
• NAD83 Illinois (HARN)
• NAD83 Indiana (HARN)
• NAD83 Iowa (HARN)
• NAD83 Kansas (HARN)
• NAD83 Kentucky (HARN)
• NAD83 Louisiana (HARN)
• NAD83 Maine (HARN)
• NAD83 Maryland and Delaware (HARN)
• NAD83 Massachusetts (HARN)
• NAD83 Michigan (HARN)
• NAD83 Minnesota (HARN)
• NAD83 Mississippi (HARN)
• NAD83 Montana (HARN)
• NAD83 Nebreska (HARN)
• NAD83 Nevada (HARN)
• NAD83 New England (HARN)
• NAD83 New Hampshire (HARN)
• NAD83 New Jersey (HARN)
• NAD83 New Mexico (HARN)
• NAD83 New York (HARN)
• NAD83 North Carolina (HARN)
• NAD83 North Dakota (HARN)
• NAD83 Ohio (HARN)
• NAD83 Oklahoma (HARN)
• NAD83 Pennsylvania (HARN)
• NAD83 Puerto Rico and Virgin Islands (HARN)
• NAD83 Rhode Island (HARN)
• NAD83 South Carolina (HARN)
• NAD83 South Dakota (HARN)
• NAD83 Tennessee (HARN)
• NAD83 Texas - East (HARN)
• NAD83 Texas - West (HARN)
• NAD83 Utah (HARN)
• NAD83 Vermont (HARN)
• NAD83 Virginia (HARN)
• NAD83 Washington and Oregon (HARN)
• NAD83 West Virginia (HARN)
• NAD83 Wisconsin (HARN)
• NAD83 Wyoming (HARN)
• NAD83(2011)
• NAD83(CORS96)
• NAD83(CSRS)
• NAD83(CSRS98)
• NAD83(HARN)
• NAD83(MA11)
• NAD83(NSRS2007)
• NAD83(PA11)
• Nahrwan (Oman)
• Nahrwan (Saudi Arabia)
• Nahrwan (United Arab Emirates)
• Nahrwan 1934
• Nahrwan 1967
• Nakhl-e Ghanem
• Naparima 1955
• Naparima 1972
• NDG (Paris)
• NEA74 Noumea
• Nepal 1981
• New Beijing
• NGN
• NGO 1948
• NGO 1948 (Oslo)
• Nord Sahara 1959
• Nord Sahara 1959 (Paris)
• Nouakchott 1965
• NSWC 9Z-2
• NTF
• NTF (NTv2)
• NTF (Paris)
• NTF (Paris) (NTv2)
• NZGD2000
• NZGD49
• NZGD49 (NTv2)
• Observatario
• Ocotepeque 1935
• Old Hawaiian
• OS(SN)80
• OSGB 1936
• OSGB 1936 - NTv2
• OSGB70
• OSNI 1952
• Ouvea - Iles Loyaute (MHNC 1972 - OUVEA)
• Padang
• Padang (Jakarta)
• Palestine 1923
• Pampa del Castillo
• Panama-Colon 1911
• PD/83
• Perroud 1950
• Peru96
• Petrels 1972
• Phoenix Islands 1966
• Pico de las Nieves 1984
• Pitcairn 1967
• Pitcairn 2006
• PNG94
• Point 58
• Pointe Geologie - Perroud 1950
• Pointe Noire
• Popular Visualisation CRS
• Porto Santo 1936
• Porto Santo 1995
• POSGAR
• POSGAR 2007
• POSGAR 94
• POSGAR 98
• Principe
• PRS92
• PSAD56
• PSD93
• PTRA08
• Puerto Rico
• Pulkovo 1942
• Pulkovo 1942(58)
• Pulkovo 1942(83)
• Pulkovo 1995
• PZ-90
• Qatar 1948
• Qatar 1974
• QND95
• Qornoq
• Qornoq 1927
• Rassadiran
• RD/83
• RDN2008
• REGCAN95
• REGVEN
• Reunion 1947
• Reykjavik 1900
• RGAF09
• RGF93
• RGFG95
• RGM04
• RGNC 1991
• RGNC91-93
• RGPF
• RGR92
• RGRDC 2005
• RGSPM06
• RRAF 1991
• RRAF 1991
• RSRGD2000
• RT38
• RT38 (Stockholm)
• RT90
• SAD69
• SAD69 (Argentina)
• SAD69 (Baltra, Galapagos)
• SAD69 (Bolivia)
• SAD69 (Brazil)
• SAD69 (Chile)
• SAD69 (Colombia)
• SAD69 (Ecuador)
• SAD69 (Guyana)
• SAD69 (IBGE1989)
• SAD69 (IBGE2005)
• SAD69 (Paraguay)
• SAD69 (Peru)
• SAD69 (Trinidad and Tobago)
• SAD69 (Venezuela)
• SAD69(96)
• Saint Pierre et Miquelon 1950
• Samboja
• Santo 1965
• Sao Tome
• Sapper Hill 1943
• Schwarzeck
• Scoresbysund 1952
• Segara
• Segara (Jakarta)
• Segora
• Selvagem Grande
• Serindung
• Sibun Gorge 1922
• Sierra Leone (1960)
• Sierra Leone 1924
• Sierra Leone 1968
• Sint Maarten Datum of 1949
• SIRGAS 1995
• SIRGAS 2000
• SIRGAS_ES2007.8
• SIRGAS-Chile
• SIRGAS-ROU98
• S-JTSK
• S-JTSK (Ferro)
• S-JTSK/05
• S-JTSK/05 (Ferro)
• SLD99 (Sri Lanka Datum 1999)
• Slovenia 1996
• Solomon 1968 (DOS 1968)
• South Asia
• South East Asia
• South East Island 1943
• South Georgia 1968
• South Yemen
• SREF98
• St. George Island
• St. Helena 1971
• St. Kitts 1955
• St. Lawrence Island
• St. Lucia 1955
• St. Paul Island
• St. Vincent 1945
• ST71 Belep
• ST84 Ile des Pins
• ST87 Ouvea
• ST87 Ouvea
• strDatum
• Sudan
• SVY21
• SWEREF99
• Tahaa 54
• Tahiti 52
• Tahiti 79
• Tananarive
• Tananarive (Paris)
• TC(1948)
• Tern Island 1961
• Tete
• TGD2005
• Timbalai 1948
• TM65
• TM75
• Tokyo 1892
• Tokyo 1898
• Tokyo 1918
• Trinidad 1903
• Tristan 1968
• TUREF
• TWD67
• TWD97
• UCS2000
• Ukraine 2000
• Unknown datum based upon the Airy 1830 ellipsoid
• Unknown datum based upon the Airy Modified 1849 ellipsoid
• Unknown datum based upon the Australian National Spheroid
• Unknown datum based upon the Authalic Sphere
• Unknown datum based upon the Average Terrestrial System 1977 ellipsoid
• Unknown datum based upon the Bessel 1841 ellipsoid
• Unknown datum based upon the Bessel Modified ellipsoid
• Unknown datum based upon the Bessel Namibia ellipsoid
• Unknown datum based upon the Clarke 1858 ellipsoid
• Unknown datum based upon the Clarke 1866 ellipsoid
• Unknown datum based upon the Clarke 1866 Michigan ellipsoid
• Unknown datum based upon the Clarke 1880 (Arc) ellipsoid
• Unknown datum based upon the Clarke 1880 (Benoit) ellipsoid
• Unknown datum based upon the Clarke 1880 (IGN) ellipsoid
• Unknown datum based upon the Clarke 1880 (RGS) ellipsoid
• Unknown datum based upon the Clarke 1880 (SGA 1922) ellipsoid
• Unknown datum based upon the Clarke 1880 ellipsoid
• Unknown datum based upon the Everest (1830 Definition) ellipsoid
• Unknown datum based upon the Everest 1830 (1937 Adjustment) ellipsoid
• Unknown datum based upon the Everest 1830 (1962 Definition) ellipsoid
• Unknown datum based upon the Everest 1830 (1967 Definition) ellipsoid
• Unknown datum based upon the Everest 1830 (1975 Definition) ellipsoid
• Unknown datum based upon the Everest 1830 Modified ellipsoid
• Unknown datum based upon the GEM 10C ellipsoid
• Unknown datum based upon the GRS 1967 ellipsoid
• Unknown datum based upon the GRS 1980 ellipsoid
• Unknown datum based upon the Helmert 1906 ellipsoid
• Unknown datum based upon the Indonesian National Spheroid
• Unknown datum based upon the International 1924 ellipsoid
• Unknown datum based upon the Krassowsky 1940 ellipsoid
• Unknown datum based upon the NWL 9D ellipsoid
• Unknown datum based upon the OSU86F ellipsoid
• Unknown datum based upon the OSU91A ellipsoid
• Unknown datum based upon the Plessis 1817 ellipsoid
• Unknown datum based upon the Struve 1860 ellipsoid
• Unknown datum based upon the War Office ellipsoid
• Unknown datum based upon the WGS 72 ellipsoid
• Unknown datum based upon the WGS 84 ellipsoid
• Unspecified datum based upon the Clarke 1866 Authalic Sphere
• Unspecified datum based upon the GRS 1980 Authalic Sphere
• Unspecified datum based upon the Hughes 1980 ellipsoid
• Unspecified datum based upon the International 1924 Authalic Sphere
• Vanua Levu 1915
• Vientiane 1982
• Viti Levu 1912
• Viti Levu 1916
• VN-2000
• Voirol 1875
• Voirol 1875 (Paris)
• Voirol 1879
• Voirol 1879 (Paris)
• Wake Island 1952
• WGS 66
• WGS 72
• WGS 72BE
• WGS 84
• Xian 1980
• Yacare
• Yemen NGN96
• Yoff
• Zanderij

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