Types for Measurement Functions and Units¶
The following types are used as parameters and return values in functions related to measurement and for providing units. These types use fixed, numeric constants, which are defined here.
- globalmapper.GM_AreaUnits_t8¶
 Surface area units
- Values:
 GM_AREA_ACRES = 0
GM_AREA_HECTARES = 1
GM_AREA_SQ_FT = 2
GM_AREA_SQ_METERS = 3
GM_AREA_SQ_KM = 4
GM_AREA_SQ_MILES = 5
GM_AREA_NUM_TYPES = 6
- globalmapper.GM_BearingSense_t8¶
 Bearing type value
- Values:
 - GM_Bearing_TrueNorth = 0
 Bearings displayed relative to true north
- GM_Bearing_MagNorth = 1
 Bearings displayed relative to magetic north
- GM_Bearing_GridNorth = 2
 Bearings displayed relative to grid north
- GM_Bearing_NumBearingSense = 3
 Count of bearing values
GM_Bearing_Default = GM_Bearing_TrueNorth
- globalmapper.GM_CalcBearingFlags_t8¶
 Flags to use when making a GM_CalcBearing call
- Values:
 - GM_CalcBearing_LatLon = 0x01
 The provided coordinates are latitude and longitude coordinates in the current datum rather than coordinates in the current projection
- GM_CalcBearing_TrueNorth = 0x00
 The returned CalcBearing will be relative to true north (default)
- GM_CalcBearing_MagNorth = 0x02
 The returned CalcBearing will be relative to magnetic north
- GM_CalcBearing_GridNorth = 0x04
 The returned CalcBearing will be relative to grid north
- globalmapper.GM_DistUnits_t8¶
 Distance units
- Values:
 GM_DistUnit_Chains = 0
GM_DistUnit_Feet = 1
GM_DistUnit_Kilometers = 2
GM_DistUnit_Meters = 3
GM_DistUnit_Miles = 4
GM_DistUnit_Rods = 5
GM_DistUnit_Varas = 6
GM_DistUnit_Yards = 7
GM_DistUnit_NauticalMiles = 8
- GM_DistUnit_FeetInternational = 9
 Non-linear units
- GM_DistUnit_Degrees = 10
 Degrees of arc
- GM_DistUnit_PercentLen = 11
 Percent of line length
- GM_DistUnit_Minutes = 12
 Minutes of arc
- GM_DistUnit_Seconds = 13
 Seconds of arc
Special values
GM_DistUnit_NumUnits = 14
- GM_DistUnit_LastValid = GM_DistUnit_NumUnits
 Last valid unit
- GM_DistUnit_LastLinear = GM_DistUnit_Degrees
 Last valid linear unit
- globalmapper.GM_ElevDisplayUnits_t8¶
 Elevation units format
- Values:
 - GM_ElevDisp_Native = 0
 Display elevations in layer native units
- GM_ElevDisp_Metric = 1
 Display elevations in metric units
- GM_ElevDisp_Statute = 2
 Display elevations in statute (feet) units
GM_ElevDisp_NumTypes = 3
- globalmapper.GM_ElevUnits_t8¶
 List of supported elevation units.
- Values:
 GM_ElevUnit_Meters = 0
GM_ElevUnit_Decimeters = 1
GM_ElevUnit_Centimeters = 2
GM_ElevUnit_Millimeters = 3
GM_ElevUnit_Feet = 4
GM_ElevUnit_Decifeet = 5
GM_ElevUnit_Inches = 6
GM_ElevUnit_Centifeet = 7
GM_ElevUnit_Millifeet = 8
GM_ElevUnit_NumUnits = 9
Special values
- GM_ElevUnit_LastValid = GM_ElevUnit_NumUnits
 Last valid unit
- GM_ElevUnit_Unknown = -1
 Unknown/unspecified units
- globalmapper.GM_LinearUnits_t8¶
 Linear distance units
- Values:
 GM_LINEAR_METRIC = 0
GM_LINEAR_NAUTICAL = 1
GM_LINEAR_STATUTE = 2
GM_LINEAR_CHAINS = 3
GM_LINEAR_YARDS = 4
GM_LINEAR_INTERNATIONAL_FEET = 5
GM_LINEAR_VARAS = 6
GM_LINEAR_RODS = 7
GM_LINEAR_NUM_TYPES = 8
- globalmapper.GM_MeasureUnitSwitch_t8¶
 Control types for which kind of units to use in measurements
- Values:
 - GM_MEASURE_AUTO = 0
 Automatically switch to larger unit (like kilometers) for larger values
- GM_MEASURE_USE_BASE = 1
 Always use the base units (like meters for metric and feet for statute)
- GM_MEASURE_USE_LARGE = 2
 Always use larger units (like kilometers for metric and miles for statute)
GM_MEASURE_SWITCH_NUM_TYPES = 3
- globalmapper.GM_Slope_t8¶
 Different ways of specifying slope
- Values:
 - GM_Slope_Degrees = 0
 Slope in degrees
- GM_Slope_Radians = 1
 Slope in radians
- GM_Slope_Percent = 2
 Percent slope
- GM_Slope_RiseRun = 3
 Raw slope as rise / run. Same as percent slope / 100
- GM_Slope_OneInXXX = 4
 Slope expressed as 1 part in XXX. A value of 4 means 1 part in 4, or 25% slope
GM_Slope_NumTypes = 5
- globalmapper.GM_SlopeAlg_t8¶
 Slope calculation algorithm to use
- Values:
 - GM_SlopeAlg_Combined4 = 0
 Combined X and Y slope using 4 non-diagonal neighbor cells [slope = sqrt( Xslope * Xslope + Yslope * Yslope)]
- GM_SlopeAlg_Combined8 = 1
 Combined X and Y slope using all 8 neighbor cells [slope = sqrt( Xslope * Xslope + Yslope * Yslope)]
- GM_SlopeAlg_Max4 = 2
 Maximum slope of the slope from cell to each of 4 non-diagonal neighbor cells
- GM_SlopeAlg_Max8 = 3
 Maximum slope of the slope from cell to each of 8 neighbor cells
GM_SlopeAlg_NumTypes = 4
- GM_SlopeAlg_Default = GM_SlopeAlg_Combined4
 Default to the fast method we’ve been using for a long time
- globalmapper.GM_SpeedUnits_t8¶
 Velocity measurement units
- Values:
 - GM_SPEED_AUTO = 0
 Automatic based on distance units
GM_SPEED_MPH = 1
GM_SPEED_KPH = 2
GM_SPEED_KNOTS = 3
- GM_SPEED_MPS = 4
 Meters per second
GM_SPEED_NUM_TYPES = 5
- globalmapper.GM_VolumeUnits_t8¶
 Three-dimensional volume units
- Values:
 GM_VOLUME_CUBIC_FEET = 0
GM_VOLUME_CUBIC_METERS = 1
GM_VOLUME_CUBIC_YARDS = 2
GM_VOLUME_GALLONS = 3
GM_VOLUME_ACRE_FEET = 4
GM_VOLUME_ACRE_INCHES = 5
GM_VOLUME_BARRELS = 6
GM_VOLUME_BARRELS_OIL = 7
GM_VOLUME_NUM_TYPES = 8
- globalmapper.DATUM¶
 Standard datums which can be used in GlobalMapper
- Values:
 GM_DATUM_ADINDAN = 0
GM_DATUM_ARC1950 = 1
GM_DATUM_ARC1960 = 2
GM_DATUM_AUSTRALIAN_GEODETIC_1966 = 3
GM_DATUM_AUSTRALIAN_GEODETIC_1984 = 4
GM_DATUM_CAMP_AREA_ASTRO = 5
GM_DATUM_CAPE = 6
GM_DATUM_EUROPEAN_DATUM_1950 = 7
GM_DATUM_EUROPEAN_DATUM_1979 = 8
GM_DATUM_GEODETIC_DATUM_1949 = 9
GM_DATUM_HONG_KONG_1963 = 10
GM_DATUM_HU_TZU_SHAN = 11
GM_DATUM_INDIAN_1954 = 12
GM_DATUM_NAD27_CONUS = 13
GM_DATUM_NAD83 = 14
GM_DATUM_OLD_HAWAIIAN_MEAN = 15
GM_DATUM_OMAN = 16
GM_DATUM_ORDNANCE_SURVEY_1936 = 17
GM_DATUM_PUERTO_RICO = 18
- GM_DATUM_PULKOVO_1942 = 19
 Pulkovo 1942 (S-42)
GM_DATUM_PROVISIONAL_S_AMERICAN_1956 = 20
GM_DATUM_TOKYO = 21
GM_DATUM_WGS_72 = 22
GM_DATUM_WGS_84 = 23
GM_DATUM_NAD27_ALASKA = 24
GM_DATUM_NAD27_ALEUTIANS_EAST = 25
GM_DATUM_NAD27_ALEUTIANS_WEST = 26
- GM_DATUM_NAD27_YPG = 27
 Yuma Proving Ground custom NAD27
- GM_DATUM_CH1903 = 28
 Swiss Grid CH1903 Datum
- GM_DATUM_EGYPT_1907 = 29
 Old Egyptian 1907
- GM_DATUM_SOUTH_AMERICA_1969 = 30
 South America 1969
- GM_DATUM_RT90 = 31
 RT90 (Swedish Grid)
- GM_DATUM_GUAM_1963 = 32
 Guam 1963
- GM_DATUM_POTSDAM = 33
 Potsdam (Germany) datum
- GM_DATUM_MGI_AUSTRIA = 34
 MGI Austria datum
- GM_DATUM_GDA94 = 35
 Geocentric Datum of Australia 1994
- GM_DATUM_INDIAN_1975 = 36
 Indian 1975
- GM_DATUM_NZGD_2000 = 37
 New Zealand Geodetic Datum 2000
- GM_DATUM_NAHRWAN = 38
 Nahrwan 1929 (United Arab Emirates)
- GM_DATUM_S_42_HUNGARY = 39
 S-42 (Pulkovo 1942) - Hungary
- GM_DATUM_S_42_POLAND = 40
 S-42 (Pulkovo 1942) - Poland
- GM_DATUM_S_42_CZECH = 41
 S-42 (Pulkovo 1942) - Czechoslavakia
- GM_DATUM_S_42_LATVIA = 42
 S-42 (Pulkovo 1942) - Latvia
- GM_DATUM_S_42_KAZAKHSTAN = 43
 S-42 (Pulkovo 1942) - Kazakhstan
- GM_DATUM_S_42_ALBANIA = 44
 S-42 (Pulkovo 1942) - Albania
- GM_DATUM_S_42_ROMANIA = 45
 S-42 (Pulkovo 1942) - Romania
- GM_DATUM_D_48_SLOVENIA = 46
 D-48 - Slovenia
- GM_DATUM_NAD27_CANADA = 47
 NAD27 (mean over Canada)
- GM_DATUM_MINNA_CAMEROON = 48
 Minna - Cameroon
- GM_DATUM_MINNA_NIGERIA = 49
 Minna - Nigeria
- GM_DATUM_DUTCH = 50
 Dutch RD (Netherlands)
- GM_DATUM_ZANDERIJ = 51
 Zanderij - Suriname
- GM_DATUM_FINLAND_HAYFORD = 52
 Finland/Hayford
- GM_DATUM_BEIJING_1954 = 53
 Beijing 1954
- GM_DATUM_NGO_1948_GREENWICH = 54
 NGO 1948 (Greenwich Meridian)
- GM_DATUM_NTF_FRANCE_GREENWICH = 55
 NTF France (Greenwich Meridian)
- GM_DATUM_CHAD_WG1998 = 56
 Chad WG1998
- GM_DATUM_HJORSEY_1955 = 57
 Hjorsey 1955
- GM_DATUM_BOGOTA_OBSERVATORY = 58
 Bogota Observatory
- GM_DATUM_SCHWARZECK = 59
 Schwarzeck - Namibia
- GM_DATUM_NORTH_SAHARA_1959 = 60
 North Sahara 1959
- GM_DATUM_REUNION_ISLAND = 61
 Reunion Island
- GM_DATUM_IRELAND_1965 = 62
 Ireland 1965
- GM_DATUM_AIN_EL_ABD_BAHRAIN = 63
 Ain El Abd (Bahrain)
GM_DATUM_AIN_EL_ABD_SAUDI_ARABIA,// = 64
- GM_DATUM_LUZON = 65
 Luzon (Phillipines)
- GM_DATUM_CARTHAGE = 66
 Carthage (Tunisia)
- GM_DATUM_MERCHICH = 67
 Merchich (Morocco)
- GM_DATUM_NAD27_MEXICO = 68
 NAD27 (mean over Mexico)
- GM_DATUM_ED50_ENGLAND = 69
 ED50 - England (EUR_K)
- GM_DATUM_ED50_FINLAND_NORWAY = 70
 ED50 - Finland and Norway (EUR_C)
- GM_DATUM_ED50_GREECE = 71
 ED50 - Greece (EUR_B)
- GM_DATUM_ED50_SICILY = 72
 ED50 - Italy (Sicily) (EUR_J)
- GM_DATUM_ED50_SPAIN_PORTUGAL = 73
 ED50 - Spain and Portugal (EUR_D)
- GM_DATUM_ROME_1940 = 74
 Rome 1940 (Monte Mario)
- GM_DATUM_KERTAU_1948 = 75
 Kertau 1948
- GM_DATUM_LEIGON = 76
 Leigon (Ghana)
- GM_DATUM_TIMBALAI_1948 = 77
 Timbalai 1948
- GM_DATUM_ASTRO_B4_SOROL_ATOLL = 78
 Astro B4 (Sorol Atoll)
- GM_DATUM_ASTRO_BEACON = 79
 Astro Beacon
- GM_DATUM_ASTRO_DOS_71_4 = 80
 Astro DOS 71/4
- GM_DATUM_ASTRONOMIC_STN_1952 = 81
 Astronomic Station 1952
- GM_DATUM_EASTER_ISLAND_1967 = 82
 Easter Island 1967
- GM_DATUM_HERMANNSKOGEL = 83
 Hermannskogel
- GM_DATUM_INDIAN_BANGLADESH = 84
 Indian (Bangladesh)
- GM_DATUM_INDIAN_MEAN_VALUE = 85
 Indian (Mean)
- GM_DATUM_INDIAN_THAILAND = 86
 Indian (Thailand)
- GM_DATUM_ISTS_073_ASTRO = 87
 ISTS 073 Astro
- GM_DATUM_NAD27_BAHAMAS = 88
 NAD27 (Bahamas)
- GM_DATUM_NAD27_CANAL_ZONE = 89
 NAD27 (Canal Zone)
- GM_DATUM_NAD27_CARIBBEAN = 90
 NAD27 (Caribbean)
- GM_DATUM_NAD27_CENTRAL = 91
 NAD27 (Central America)
- GM_DATUM_NAD27_CUBA = 92
 NAD27 (Cuba)
- GM_DATUM_NAD27_GREENLAND = 93
 NAD27 (Greenland)
- GM_DATUM_NAD27_SAN_SALVADOR = 94
 NAD27 (San Salvador)
- GM_DATUM_OBSERVATORIO_1966 = 95
 Observatorio_1966
- GM_DATUM_PICO_DE_LAS_NIEVES = 96
 Pico de las Nieves
- GM_DATUM_PORTUGESE_1973 = 97
 Portugese 1973
- GM_DATUM_PROV_S_CHILEAN = 98
 Provisional South Chilean (1963)
- GM_DATUM_QORNOQ = 99
 Qornoq
- GM_DATUM_SAO_BRAZ = 100
 Sao Braz
- GM_DATUM_SOUTHEAST_BASE = 101
 Southeast Base
- GM_DATUM_SOUTHWEST_BASE = 102
 Southwest Base
- GM_DATUM_KKJ = 103
 KKJ (Finnish Grid)
- GM_DATUM_GGRS87 = 104
 GGRS 1987 (Greek Grid)
- GM_DATUM_POINTE_NOIRE = 105
 Pointe Noire 1948 (Congo)
- GM_DATUM_RGF_93 = 106
 RGF-93 (France)
- GM_DATUM_CAMPO_INCHAUSPE = 107
 Campo Inchauspe (Argentina)
- GM_DATUM_ETRS89 = 108
 ETRS89 (coincident with WGS-84 within a meter)
- GM_DATUM_NTF_FRANCE_PARIS = 109
 NTF France (Pantheon in Paris Meridian)
- GM_DATUM_HARTEBEESTHOEK94 = 110
 Hartebeesthoek94 (South Africa)
- GM_DATUM_INDONESIA_1974 = 111
 Indonesia 1974
- GM_DATUM_BUKIT_RIMPAH = 112
 Bukit Rimpah
- GM_DATUM_NAD27 = 113
 NAD27 - auto-selects best NAD27 specialization
- GM_DATUM_LUREF = 114
 Luxembourg Reference Datum
- GM_DATUM_QND95 = 115
 Qatar National Datum 1995
- GM_DATUM_OLD_ISRAELI = 116
 Old Israeli Datum
- GM_DATUM_NEW_ISRAELI = 117
 New Israeli Datum
- GM_DATUM_CORREGO_ALEGRE = 118
 Corrego Alegre (Brazil)
- GM_DATUM_POSGAR94 = 119
 Posgar 94 datum (Argentina)
- GM_DATUM_HD72 = 120
 Hungarian datum 1972
- GM_DATUM_ATS77_NOVA_SCOTIA = 121
 ATS77 (Average Terrestrial System 1977) - Nova Scotia
- GM_DATUM_INDIAN_NEPAL = 122
 India (Nepal) - Everest 1956 ellipsoid
- GM_DATUM_YACARE = 123
 Yacare (Uruguay)
- GM_DATUM_TANANARIVE_1925 = 124
 Tananarive Observatory 1925 (Madagascar) (Greenwich PM)
- GM_DATUM_S_JTSK = 125
 S-JTSK (Czech and Slovak Republics)
- GM_DATUM_GRS80_ELLIPSOID = 126
 GRS80 Ellipsoid (equivalent to WGS84, included for confused users)
- GM_DATUM_KGD = 127
 Korean Geodetic Datum (KGD)
- GM_DATUM_IRELAND_1975 = 128
 Ireland 1965 with 1975 Adjustment
- GM_DATUM_DP1970 = 129
 Dealul Piscului 1970
- GM_DATUM_LISBON_DLX = 130
 Lisbon (DLx)
- GM_DATUM_SOLOMON_1968 = 131
 Solomon 1968 (GUX 1 Astro)
- GM_DATUM_M_PORALOKO = 132
 M’Poraloko (Gabon)
- GM_DATUM_GOOGLE_MAPS = 133
 Google Maps datum (Sphere Radius 6378137 - has special relation to WGS84)
- GM_DATUM_BD72 = 134
 BD72 (Belgium 1972)
- GM_DATUM_NGO_1948_OSLO = 135
 NGO 1948 (Oslo Meridian)
- GM_DATUM_TANANARIVE_1925_PARIS = 136
 Tananarive Observatory 1925 (Madagascar) (Paris PM)
- GM_DATUM_ARATU = 137
 Aratu (Brazil Oil Exploration)
- GM_DATUM_CAMACUPA = 138
 Camacupa
- GM_DATUM_JAD69 = 139
 JAD69 (Jamaica 1969)
- GM_DATUM_JAD2001 = 140
 JAD2001 (Jamaica 2001) [Equivalent to WGS84]
- GM_DATUM_EUROPEAN_DATUM_1987 = 141
 ED87 (European Datum 1987)
- GM_DATUM_S_42_AZ_GEORGIA = 142
 S-42 (Pulkovo 1942) (Azerbaijan and Georgia)
- GM_DATUM_S_42_ESTONIA = 143
 S-42 (Pulkovo 1942) (Estonia)
- GM_DATUM_S_42_GERMANY = 144
 S-42 (Pulkovo 1942) (Germany - Mecklenburg-Vorpommern and Sachsen-Anhalt)
- GM_DATUM_S_42_LITHUANIA = 145
 S-42 (Pulkovo 1942) (Lithuania)
- GM_DATUM_S_42_RUSSIA = 146
 S-42 (Pulkovo 1942) (Russia)
- GM_DATUM_IRENET95 = 147
 Ireland IRENET95 datum
- GM_DATUM_PRS92 = 148
 Philippine Reference System 1992
- GM_DATUM_MALONGO_1987 = 149
 Malongo 1987
- GM_DATUM_SWEREF99 = 150
 SWEREF99
- GM_DATUM_KOREAN_1985 = 151
 Korean 1985
- GM_DATUM_KOREAN_1995 = 152
 Korean 1995
- GM_DATUM_HERAT_NORTH = 153
 Herat North
- GM_DATUM_DEIR_EZ_ZOR = 154
 Deir ez Zor (Syria)
- GM_DATUM_EGYPT_GULF_OF_SUEZ = 155
 Egypt Gulf of Suez S-650 TL
- GM_DATUM_JORDAN = 156
 Jordan
- GM_DATUM_FD_1958 = 157
 FD 1958 (Iraq)
- GM_DATUM_OCOTEPEQUE = 158
 Ocotepeque (Costa Rica)
- GM_DATUM_ISN93 = 159
 ISN93 (Island Network 1993) - Iceland
- GM_DATUM_REYKJAVIK_1900 = 160
 Reykjavik 1900
- GM_DATUM_ESTONIA_1997 = 161
 Estonia 1997
- GM_DATUM_TRINIDAD_1903 = 162
 Trinidad 1903
- GM_DATUM_LKS92 = 163
 LKS92 (Latvia)
- GM_DATUM_MODIS_SPHEROID = 164
 Spheroid Used by MODIS Imagery
- GM_DATUM_ETRF_2000 = 165
 ETRF2000 - RDN
- GM_DATUM_ROME_1940_ROME = 166
 Rome 1940 (Monte Mario) - Rome Meridian
- GM_DATUM_NAPARIMA_1972 = 167
 Naparima 1972 (Trinidad & Tobago)
- GM_DATUM_JGD2000 = 168
 Japanese Geodetic Datum 2000
- GM_DATUM_SIRGAS_2000 = 169
 SIRGAS 2000 (Brazil)
- GM_DATUM_CLARKE_1866_AUTHALIC = 170
 Clarke 1866 Authalic Sphere
- GM_DATUM_RGNC91_93 = 171
 RGNC91-93 (New Caledonia)
- GM_DATUM_IGN72_GRANDE_TERRE = 172
 IGN72 Grande Terre (New Caledonia)
- GM_DATUM_BESSEL_1841 = 173
 Bessel 1841 Ellipsoid (Greenwich Meridian)
- GM_DATUM_BESSEL_1841_GENOVA = 174
 Bessel 1841 Ellipsoid (Genova Meridian)
GM_DATUM_BESSEL_1841_MONTE_MARIO,// = 175
- GM_DATUM_BESSEL_1841_CASTANEA_DELLE_FURIE = 176
 Bessel 1841 Ellipsoid (Castanea delle Furie Meridian)
- GM_DATUM_PSD93 = 177
 PSD93 (Oman)
GM_DATUM_NORTH_SAHARA_1959_HASSI,// = 178
- GM_DATUM_LA_CANOA = 179
 La Canoa (Venezuela)
- GM_DATUM_NAD83_ITRF96 = 180
 NAD83 (ITRF96)
- GM_DATUM_MGI_CROATIA_SERBIA = 181
 MGI Croatia/Serbia datum
- GM_DATUM_MGI_SLOVENIA = 182
 MGI Slovenia/Western Croatia datum
- GM_DATUM_HONG_KONG_1980 = 183
 Hong Kong 1980 (HK80)
- GM_DATUM_AMERICAN_SAMOA_1962 = 184
 American Samoa 1962
- GM_DATUM_POTSDAM_FERRO = 185
 Potsdam/DHDN (Germany) datum with Ferro meridian
- GM_DATUM_GDM2000 = 186
 GDM2000 (Geodetic Datum of Malaysia 2000)
- GM_DATUM_LOWRANCE = 187
 Lowrance (Sphere Radius 6356752 m)
- GM_DATUM_NAD83_CSRS = 188
 NAD83 (CSRS - Canadian Spatial Reference System)
- GM_DATUM_RGFG95 = 189
 RGFG95
- GM_DATUM_RGR92 = 190
 RGR92
- GM_DATUM_RGM04 = 191
 RGM04
- GM_DATUM_RGSPM06 = 192
 RGSPM06
- GM_DATUM_ED50_TURKEY = 193
 ED50 (Turkey)
- GM_DATUM_GUADELOUPE_1948 = 194
 Guadeloupe 1948 datum
- GM_DATUM_MARTINIQUE_1938 = 195
 Martinique 1938 datum
- GM_DATUM_COMBANI_1950 = 196
 Combani 1950 (Mayotte)
- GM_DATUM_CSJ67 = 197
 CSJ67 (Guyane Francais)
- GM_DATUM_FORT_MARIGOT = 198
 Fort Marigor (St. Maarten & St. Barthelemy Islands)
- GM_DATUM_XIAN_1980 = 199
 Xi’an 1980 Datum (China)
- GM_DATUM_DEALUL_PISCULUI_1933 = 200
 Dealul Piscului 1933 (Romania)
- GM_DATUM_LE_POUCE_1934 = 201
 Le Pouce 1934 (Mauritius)
- GM_DATUM_VN_2000 = 202
 VN-2000 (Vietnam)
- GM_DATUM_TETE = 203
 Tete (Mozambique)
- GM_DATUM_POTSDAM_1983_FERRO = 204
 Potsdam 1983 (Ferro Meridian)
- GM_DATUM_KRASOVSKY_ELLIPSOID = 205
 Krasovsky Ellipsoid (unknown datum)
- GM_DATUM_NAD27_MICHIGAN = 206
 NAD27 (Michigan) - special for old NAD27 Michigan State Plane zone
- GM_DATUM_INDIAN_1960 = 207
 Indian 1960
- GM_DATUM_OSGB36_NTV2 = 208
 OSGB36 transform using NTv2 Grid Shift only
- GM_DATUM_OSGB36_7PARAM = 209
 OSGB36 transform using 7-parameter Grid Shift only
- GM_DATUM_TWD67 = 210
 Taiwan Datum 1967
- GM_DATUM_CROATIA_HDKS = 211
 Croatia HDKS Grid Shift
- GM_DATUM_SPHERE_6378137M = 212
 Sphere Radius 6378137 meters
- GM_DATUM_STM1987 = 213
 DNAG/STM1987 datum used for Geological Maps of North America. Not a true datum, like Authalic 1866 (see http://www.mail-archive.com/geonet@lists.geosoft.com/msg00545.html)
- GM_DATUM_QATAR_1974 = 214
 Qatar 1974
- GM_DATUM_RT38 = 215
 RT38 (Swedish Grid) - Greenwich Meridian
- GM_DATUM_RT38_STOCKHOLM = 216
 RT38 (Swedish Grid) - Stockolm Meridian
- GM_DATUM_CH1903_PLUS = 217
 CH1903+ (Swiss Grid)
- GM_DATUM_NAPARIMA_1955 = 218
 Naparima 1955 (Trinidad & Tobago)
- GM_DATUM_CLARKE_1866_ELLIPSOID = 219
 Clarke 1866 Ellipsoid
- GM_DATUM_CLARKE_1880_ELLIPSOID = 220
 Clarke 1880 Ellipsoid
- GM_DATUM_BATAVIA = 221
 Batavia (Indonesia)
- GM_DATUM_SPHERE_6371228M = 222
 International 1924 Authalic Sphere (Sphere Radius 6371228)
- GM_DATUM_TWD97 = 223
 Taiwan Datum 1997 (TWD97)
- GM_DATUM_JGD2011 = 224
 Japanese Geodetic Datum 2011
- GM_DATUM_PNG94 = 225
 PNG94 (Papua New Guinea Geodetic Datum 1994)
- GM_DATUM_CR05 = 226
 Costa Rica 2005
- GM_DATUM_RDN2008 = 227
 RDN2008 (Rete Dinamica Nazionale 2008)
- GM_DATUM_HTRS96 = 228
 HTRS96 (Croatian Terrestrial Reference System)
- GM_DATUM_ACCRA = 229
 Accra (Ghana)
- GM_DATUM_S_42_KAZAKHSTAN_CASPIAN = 230
 S-42 (Pulkovo 1942) - Kazakhstan - Caspian Sea
- GM_DATUM_TUREF = 231
 TUREF (Turkey)
- GM_DATUM_GDA2020 = 232
 GDA 2020 (Australian Geodetic 2020)
- GM_DATUM_IGD05 = 233
 Israeli Geodetic Datum 2005 (IGD05)
- GM_DATUM_IGD05_12 = 234
 Israeli Geodetic Datum 2005(2012) (IGD05/12)
- GM_DATUM_IG05_12_INTERMEDIATE = 235
 IG05/12 Intermediate Datum (Israel)
- GM_DATUM_HS2_IRF = 236
 HS2 Intermediate Reference Frame (UK)
- GM_DATUM_LTF2004 = 237
 Lyon Turin Ferroviaire 2004
- GM_DATUM_S_JTSK_FERRO = 238
 S-JTSK (Czech and Slovak Republics)
- GM_DATUM_FIJI_1986 = 239
 Fiji Geodetic Datum 1986
Child datums
GM_DATUM_CHILD_FIRST = 0x1000
- GM_DATUM_NAD83_ALABAMA = 0x1001
 Alabama HPGN
- GM_DATUM_NAD83_ARIZONA = 0x1002
 Arizona HPGN
- GM_DATUM_NAD83_ARKANSAS = 0x1003
 Arkansas HPGN
GM_DATUM_NAD83_CALIFORNIA_NORTH = 0x1004
GM_DATUM_NAD83_CALIFORNIA_SOUTH = 0x1005
- GM_DATUM_NAD83_COLORADO = 0x1006
 Colorado HPGN
- GM_DATUM_NAD83_FLORIDA = 0x1007
 Florida HPGN
- GM_DATUM_NAD83_GEORGIA = 0x1008
 Georgia HPGN
- GM_DATUM_NAD83_HAWAII = 0x1009
 Hawaii HPGN
- GM_DATUM_NAD83_ILLINOIS = 0x100A
 Illinois HPGN
- GM_DATUM_NAD83_INDIANA = 0x100B
 Indiana HPGN
- GM_DATUM_NAD83_IOWA = 0x100C
 Iowa HPGN
- GM_DATUM_NAD83_KANSAS = 0x100D
 Kansas HPGN
- GM_DATUM_NAD83_KENTUCKY = 0x100E
 Kentucky HPGN
- GM_DATUM_NAD83_LOUISIANA = 0x100F
 Louisiana HPGN
- GM_DATUM_NAD83_MAINE = 0x1010
 Maine HPGN
- GM_DATUM_NAD83_MARYLAND = 0x1011
 Maryland-Delaware HPGN
- GM_DATUM_NAD83_MICHIGAN = 0x1012
 Michigan HPGN
- GM_DATUM_NAD83_MINNESOTA = 0x1013
 Minnesota HPGN
- GM_DATUM_NAD83_MISSISSIPPI = 0x1014
 Mississippi HPGN
- GM_DATUM_NAD83_MISSOURI = 0x1015
 Missouri HPGN
- GM_DATUM_NAD83_MONTANA_EAST = 0x1016
 Montana East HPGN
- GM_DATUM_NAD83_MONTANA_WEST = 0x1017
 Montana West/Idaho HPGN
- GM_DATUM_NAD83_NEBRASKA = 0x1018
 Nebraska HPGN
- GM_DATUM_NAD83_NEVADA = 0x1019
 Nevada HPGN
- GM_DATUM_NAD83_NEW_ENGLAND = 0x101A
 New England HPGN
- GM_DATUM_NAD83_NEW_JERSEY = 0x101B
 New Jersey HPGN
- GM_DATUM_NAD83_NEW_MEXICO = 0x101C
 New Mexico HPGN
- GM_DATUM_NAD83_NEW_YORK = 0x101D
 New York HPGN
- GM_DATUM_NAD83_NORTH_DAKOTA = 0x101E
 North Dakota HPGN
- GM_DATUM_NAD83_OHIO = 0x101F
 Ohio HPGN
- GM_DATUM_NAD83_OKLAHOMA = 0x1020
 Oklahoma HPGN
- GM_DATUM_NAD83_PENNSYLVANIA = 0x1021
 Pennsylvania HPGN
- GM_DATUM_NAD83_PUERTO_RICO = 0x1022
 Puerto Rico/Virgin Islands HPGN
- GM_DATUM_NAD83_SOUTH_DAKOTA = 0x1023
 South Dakota HPGN
- GM_DATUM_NAD83_TENNESSEE = 0x1024
 Tennessee HPGN
- GM_DATUM_NAD83_TEXAS_EAST = 0x1025
 Texas East HPGN
- GM_DATUM_NAD83_TEXAS_WEST = 0x1026
 Texas West HPGN
- GM_DATUM_NAD83_UTAH = 0x1027
 Utah HPGN
- GM_DATUM_NAD83_VIRGINIA = 0x1028
 Virginia HPGN
- GM_DATUM_NAD83_WASHINGTON = 0x1029
 Washington-Oregon HPGN
- GM_DATUM_NAD83_WEST_VIRGINIA = 0x102A
 West Virginia HPGN
- GM_DATUM_NAD83_WISCONSIN = 0x102B
 Wisconsin HPGN
- GM_DATUM_NAD83_WYOMING = 0x102C
 Wyoming HPGN
- GM_DATUM_MN_ANOKA = 0x102D
 Minnesota County Datum
- GM_DATUM_MN_BECKER = 0x102E
 Minnesota County Datum
- GM_DATUM_MN_BELTRAMI_NORTH = 0x102F
 Minnesota County Datum
- GM_DATUM_MN_BELTRAMI_SOUTH = 0x1030
 Minnesota County Datum
- GM_DATUM_MN_BENTON = 0x1031
 Minnesota County Datum
- GM_DATUM_MN_BIG_STONE = 0x1032
 Minnesota County Datum
- GM_DATUM_MN_BLUE_EARTH = 0x1033
 Minnesota County Datum
- GM_DATUM_MN_BROWN = 0x1034
 Minnesota County Datum
- GM_DATUM_MN_CARLTON = 0x1035
 Minnesota County Datum
- GM_DATUM_MN_CARVER = 0x1036
 Minnesota County Datum
- GM_DATUM_MN_CASS_NORTH = 0x1037
 Minnesota County Datum
- GM_DATUM_MN_CASS_SOUTH = 0x1038
 Minnesota County Datum
- GM_DATUM_MN_CHIPPEWA = 0x1039
 Minnesota County Datum
- GM_DATUM_MN_CHISAGO = 0x103A
 Minnesota County Datum
- GM_DATUM_MN_COOK_NORTH = 0x103B
 Minnesota County Datum
- GM_DATUM_MN_COOK_SOUTH = 0x103C
 Minnesota County Datum
- GM_DATUM_MN_COTTONWOOD = 0x103D
 Minnesota County Datum
- GM_DATUM_MN_CROW_WING = 0x103E
 Minnesota County Datum
- GM_DATUM_MN_DAKOTA = 0x103F
 Minnesota County Datum
- GM_DATUM_MN_DODGE = 0x1040
 Minnesota County Datum
- GM_DATUM_MN_DOUGLAS = 0x1041
 Minnesota County Datum
- GM_DATUM_MN_FARIBAULT = 0x1042
 Minnesota County Datum
- GM_DATUM_MN_FILLMORE = 0x1043
 Minnesota County Datum
- GM_DATUM_MN_FREEBORN = 0x1044
 Minnesota County Datum
- GM_DATUM_MN_GOODHUE = 0x1045
 Minnesota County Datum
- GM_DATUM_MN_GRANT = 0x1046
 Minnesota County Datum
- GM_DATUM_MN_HENNEPIN = 0x1047
 Minnesota County Datum
- GM_DATUM_MN_HOUSTON = 0x1048
 Minnesota County Datum
- GM_DATUM_MN_ISANTI = 0x1049
 Minnesota County Datum
- GM_DATUM_MN_ITASCA_NORTH = 0x104A
 Minnesota County Datum
- GM_DATUM_MN_ITASCA_SOUTH = 0x104B
 Minnesota County Datum
- GM_DATUM_MN_JACKSON = 0x104C
 Minnesota County Datum
- GM_DATUM_MN_KANABEC = 0x104D
 Minnesota County Datum
- GM_DATUM_MN_KANDIYOHI = 0x104E
 Minnesota County Datum
- GM_DATUM_MN_KITTSON = 0x104F
 Minnesota County Datum
- GM_DATUM_MN_KOOCHICHING = 0x1050
 Minnesota County Datum
- GM_DATUM_MN_LAC_QUI_PARLE = 0x1051
 Minnesota County Datum
- GM_DATUM_MN_LAKE_OF_THE_WOODS_NORTH = 0x1052
 Minnesota County Datum
- GM_DATUM_MN_LAKE_OF_THE_WOODS_SOUTH = 0x1053
 Minnesota County Datum
- GM_DATUM_MN_LE_SUEUR = 0x1054
 Minnesota County Datum
- GM_DATUM_MN_LINCOLN = 0x1055
 Minnesota County Datum
- GM_DATUM_MN_LYON = 0x1056
 Minnesota County Datum
- GM_DATUM_MN_MCLEOD = 0x1057
 Minnesota County Datum
- GM_DATUM_MN_MAHNOMEN = 0x1058
 Minnesota County Datum
- GM_DATUM_MN_MARSHALL = 0x1059
 Minnesota County Datum
- GM_DATUM_MN_MARTIN = 0x105A
 Minnesota County Datum
- GM_DATUM_MN_MEEKER = 0x105B
 Minnesota County Datum
- GM_DATUM_MN_MORRISON = 0x105C
 Minnesota County Datum
- GM_DATUM_MN_MOWER = 0x105D
 Minnesota County Datum
- GM_DATUM_MN_MURRAY = 0x105E
 Minnesota County Datum
- GM_DATUM_MN_NICOLLET = 0x105F
 Minnesota County Datum
- GM_DATUM_MN_NOBLES = 0x1060
 Minnesota County Datum
- GM_DATUM_MN_NORMAN = 0x1061
 Minnesota County Datum
- GM_DATUM_MN_OLMSTED = 0x1062
 Minnesota County Datum
- GM_DATUM_MN_OTTERTAIL = 0x1063
 Minnesota County Datum
- GM_DATUM_MN_PENNINGTON = 0x1064
 Minnesota County Datum
- GM_DATUM_MN_PINE = 0x1065
 Minnesota County Datum
- GM_DATUM_MN_PIPESTONE = 0x1066
 Minnesota County Datum
- GM_DATUM_MN_POLK = 0x1067
 Minnesota County Datum
- GM_DATUM_MN_POPE = 0x1068
 Minnesota County Datum
- GM_DATUM_MN_RAMSEY = 0x1069
 Minnesota County Datum
- GM_DATUM_MN_RED_LAKE = 0x106A
 Minnesota County Datum
- GM_DATUM_MN_REDWOOD = 0x106B
 Minnesota County Datum
- GM_DATUM_MN_RENVILLE = 0x106C
 Minnesota County Datum
- GM_DATUM_MN_RICE = 0x106D
 Minnesota County Datum
- GM_DATUM_MN_ROCK = 0x106E
 Minnesota County Datum
- GM_DATUM_MN_ROSEAU = 0x106F
 Minnesota County Datum
- GM_DATUM_MN_ST_LOUIS_NORTH = 0x1070
 Minnesota County Datum
- GM_DATUM_MN_ST_LOUIS_CENTRAL = 0x1071
 Minnesota County Datum
- GM_DATUM_MN_ST_LOUIS_SOUTH = 0x1072
 Minnesota County Datum
- GM_DATUM_MN_SCOTT = 0x1073
 Minnesota County Datum
- GM_DATUM_MN_SHERBURNE = 0x1074
 Minnesota County Datum
- GM_DATUM_MN_SIBLEY = 0x1075
 Minnesota County Datum
- GM_DATUM_MN_STEARNS = 0x1076
 Minnesota County Datum
- GM_DATUM_MN_STEELE = 0x1077
 Minnesota County Datum
- GM_DATUM_MN_STEVENS = 0x1078
 Minnesota County Datum
- GM_DATUM_MN_SWIFT = 0x1079
 Minnesota County Datum
- GM_DATUM_MN_TODD = 0x107A
 Minnesota County Datum
- GM_DATUM_MN_TRAVERSE = 0x107B
 Minnesota County Datum
- GM_DATUM_MN_WABASHA = 0x107C
 Minnesota County Datum
- GM_DATUM_MN_WADENA = 0x107D
 Minnesota County Datum
- GM_DATUM_MN_WASECA = 0x107E
 Minnesota County Datum
- GM_DATUM_MN_WATONWAN = 0x107F
 Minnesota County Datum
- GM_DATUM_MN_WINONA = 0x1080
 Minnesota County Datum
- GM_DATUM_MN_WRIGHT = 0x1081
 Minnesota County Datum
- GM_DATUM_MN_YELLOW_MEDICINE = 0x1082
 Minnesota County Datum
- GM_DATUM_WI_SHEBOYGAN = 0x1083
 Wisconsin County Datum
- GM_DATUM_ED50_ITALY = 0x1084
 ED50 - Italy
- GM_DATUM_NAD83_SOUTH_CAROLINA = 0x1085
 South Carolina HPGN
- GM_DATUM_ED50_NORTH_SEA = 0x1086
 ED50 - North Sea
- GM_DATUM_ED50_NORWAY_N62 = 0x1087
 ED50 - Norway Offshore - North of 62N
- GM_DATUM_ED50_NORWAY_S62 = 0x1088
 ED50 - Norway Offshore - South of 62N
- GM_DATUM_WI_BURNETT = 0x1089
 Wisconsin County Datum
- GM_DATUM_WI_DOUGLAS = 0x108A
 Wisconsin County Datum
- GM_DATUM_SAD69_BRAZIL = 0x108B
 South America 1969 (Brazil transformation)
- GM_DATUM_KERTAU_1948_MALAYSIA = 0x108C
 Kertau 1948 (Malaysia 7-parameter transformation)
- GM_DATUM_NAD83_CSRS_ALBERTA = 0x108D
 NAD83 (CSRS) - Alberta Grid Shift File
- GM_DATUM_NAD83_CSRS_BC = 0x108E
 NAD83 (CSRS) - British Colombia Grid Shift File
- GM_DATUM_NAD83_CSRS_NB = 0x108F
 NAD83 (CSRS) - New Brunswick Grid Shift File
- GM_DATUM_NAD83_CSRS_QUEBEC = 0x1090
 NAD83 (CSRS) - Quebec Grid Shift File
- GM_DATUM_NAD83_CSRS_SASK = 0x1091
 NAD83 (CSRS) - Saskatchewan Grid Shift File
- GM_DATUM_WI_CHIPPEWA = 0x1092
 Wisconsin County Datum
- GM_DATUM_WI_TAYLOR = 0x1093
 Wisconsin County Datum
- GM_DATUM_NAD83_NORTH_CAROLINA = 0x1094
 North Carolina HPGN
- GM_DATUM_WI_MARATHON = 0x1095
 Wisconsin County Datum
- GM_DATUM_ED50_MALTA = 0x1096
 ED50 - Malta
- GM_DATUM_NAD83_NSRS2007 = 0x1097
 NAD83 (NSRS2007)
- GM_DATUM_NAD83_NSRS2011 = 0x1098
 NAD83 (NSRS2011)
- GM_DATUM_NAD83_PA11 = 0x1099
 NAD83 (PA11)
- GM_DATUM_NAD83_MA11 = 0x109A
 NAD83 (MA11)
- GM_DATUM_MN_ST_LOUIS = 0x109B
 Minnesota County Datum (St. Louis Entire County Transverse Mercator)
- GM_DATUM_NAD83_CSRS_7PARAM = 0x109C
 NAD83 (CSRS) 7-parameter transform EPSG 1946 (Bug 21998)
- GM_DATUM_CHINA_2000 = 0x109D
 China 2000 (CGCS2000)
- GM_DATUM_ETRS89_ITALY = 0x109E
 ETRS89 in Italy with NTv2 file
- GM_DATUM_ETRF_2000_ITALY = 0x109F
 ETRF2000 in Italy with NTv2 file
- GM_DATUM_OSGB36_OSTN02 = 0x10A0
 OSTN02 (OSGB36)
- GM_DATUM_OSGB36_OSTN15 = 0x10A1
 OSTN15 (OSGB36)
Custom datum range
GM_DATUM_CUSTOM_FIRST = 0x2000
GM_DATUM_CUSTOM_LAST = 0x3FFF
Interplanetary datums
GM_DATUM_IP_FIRST = 0x4000
GM_DATUM_IP_MERCURY = GM_DATUM_IP_FIRST
GM_DATUM_IP_VENUS = 0x4001
GM_DATUM_IP_VENUS_1985 = 0x4002
GM_DATUM_IP_MOON = 0x4003
GM_DATUM_IP_MARS_2000 = 0x4004
GM_DATUM_IP_MARS_1990 = 0x4005
GM_DATUM_IP_JUPITER = 0x4006
GM_DATUM_IP_IO = 0x4007
GM_DATUM_IP_EUROPA = 0x4008
GM_DATUM_IP_GANYMEDE = 0x4009
GM_DATUM_IP_CALLISTO = 0x400A
GM_DATUM_IP_SATURN = 0x400B
GM_DATUM_IP_TITAN = 0x400C
GM_DATUM_IP_URANUS = 0x400D
GM_DATUM_IP_NEPTUNE = 0x400E
GM_DATUM_IP_PLUTO = 0x400F
GM_DATUM_IP_MARS_2000_SPHERE = 0x4010
GM_DATUM_IP_MARS_2000_POLAR_SPHERE = 0x4011
- GM_DATUM_IP_MARS_MOLA_SPHERE = 0x4012
 Mars sphere radius 3396000 m used by MOLA
GM_DATUM_IP_LAST = GM_DATUM_IP_MARS_MOLA_SPHERE
- GM_DATUM_GEOCALC = 0x4013
 Special Blue Marble Geographics type meaningful only when Blue Marble Mode is on.
Special datum values
GM_DATUM_UNKNOWN = -1
GM_DATUM_NONE = -2
GM_DATUM_DEFAULT = -3
Renames
- GM_DATUM_SWISS_GRID = GM_DATUM_CH1903
 Swiss Grid CH1903 Datum
- globalmapper.PROJATTR¶
 Projection attribute values for defining a GM_Projection_t object.
- Values:
 FIRST_STANDARD_PARALLEL = 0
SECOND_STANDARD_PARALLEL = 1
CENTRAL_LATITUDE = 2
CENTRAL_LONGITUDE = 3
FALSE_EASTING = 4
FALSE_NORTHING = 5
SPHERE_RADIUS = 6
ORIGIN_LATITUDE = 7
SEMI_MAJOR_AXIS = 8
SEMI_MINOR_AXIS = 9
CENTRAL_MERIDIAN = 10
STANDARD_PARALLEL = 11
TRUE_SCALE_LATITUDE = 12
AZIMUTH_ANGLE = 13
AZIMUTH_POINT = 14
LATITUDE1 = 15
LATITUDE2 = 16
LONGITUDE1 = 17
LONGITUDE2 = 18
PROJ_CENTER_SCALE_FACTOR = 19
LONGITUDE_POLE = 20
CENTRAL_MERIDIAN_SCALE_FACTOR = 21
PERSPECTIVE_POINT_HEIGHT = 22
INCLINATION_ANGLE = 23
ASCENTION_LONGITUDE = 24
SAT_REV_PERIOD = 25
END_OF_PATH_FLAG = 26
LANDSAT_SAT_NUM = 27
OEA_SHAPE_PARM_M = 28
OEA_SHAPE_PARM_N = 29
OEA_OVAL_ROTATION_ANGLE = 30
ZONE = 31
- GM_PRJ_ATTR_STATE_PLANE_SCALE_FACTOR = 32
 extra scale factor for State Plane projections
Attributes for GM_PRJ_FIXED_SCREEN_POS projection
- GM_PRJ_ATTR_HORZ_OFFSET = 33
 horizontal offset value in inches, percent, or longitude
- GM_PRJ_ATTR_HORZ_OFFSET_TYPE = 34
 horizontal offset type (0 - left, 1 - right, 2 - centered)
- GM_PRJ_ATTR_HORZ_OFFSET_VTYPE = 35
 horizontal offset value type (0 - inches, 1 - percent, 2 - degrees longitude, 3 - centimeters)
- GM_PRJ_ATTR_VERT_OFFSET = 36
 vertical offset value in inches, percent, or latitude
- GM_PRJ_ATTR_VERT_OFFSET_TYPE = 37
 vertical offset type (0 - top, 1 - bottom, 2 - centered)
- GM_PRJ_ATTR_VERT_OFFSET_VTYPE = 38
 vertical offset value type (0 - inches, 1 - percent, 2 - degrees latitude, 3 - centimeters)
- GM_PRJ_ATTR_SIZE_VALUE = 39
 size value (percent)
- GM_PRJ_ATTR_SIZE_VALUE_TYPE = 40
 size value type (0 - fixed pixel size, 1 - percent width, 2 - percent height, 3 - absolute (used only in cartographic viewer only))
- GM_PRJ_ATTR_ALWAYS_ON_TOP = 41
 make this fixed screen file show on top of everything else
- GM_PRJ_ATTR_SHRINK_TO_FIT = 42
 shrink this layer to fit on the screen/export if too large
Additional attributes
- GM_PRJ_ATTR_STATE_PLANE_EXTRA_FALSE_EASTING = 43
 extra false easting (in meters) for State Plane projections to apply AFTER the extra scale factor
- GM_PRJ_ATTR_STATE_PLANE_EXTRA_FALSE_NORTHING = 44
 extra false northing (in meters) for State Plane projections to apply AFTER the extra scale factor
- GM_PRJ_ATTR_STATE_PLANE_SCALE_CENTER_EASTING = 45
 easting of location at which to apply extra scale factor for State Plane projections
- GM_PRJ_ATTR_STATE_PLANE_SCALE_CENTER_NORTHING = 46
 northing of location at which to apply extra scale factor for State Plane projections
- GM_PRJ_ATTR_ROTATION_ANGLE = 47
 rotation angle for gridding projections that support rotation about their origin (0,0) point
- GM_PRJ_ATTR_AUX_SPHERE_TYPE = 48
 auxiliary sphere type (0 (use semimajor axis or radius of the geographic coordinate system), 1 (use semiminor axis or radius), 2 (calculate and use authalic radius), or 3 (use authalic radius and convert geodetic latitudes to authalic latitudes)
- GM_PRJ_ATTR_RECTIFIED_GRID_ANGLE = 49
 rectified_grid_angle for RSO projections
NUM_PROJ_ATTR_TYPES = 50
- GM_MAX_ATTR_PER_PROJ = 16
 maximum attributes a single projection might have
Attribute aliases
GM_PRJ_ATTR_SKEW_GRID_ANGLE = INCLINATION_ANGLE
- globalmapper.PROJSYS¶
 Standard projection systems for defining a GM_Projection_t object.
- Values:
 - GM_PRJ_GEO = 0
 Geographic (lat/lon)
- GM_PRJ_UTM = 1
 UTM
- GM_PRJ_SPCS = 2
 US State Plane
- GM_PRJ_ALBERS = 3
 Albers Conic
- GM_PRJ_LAMCC = 4
 Lambert Conformal Conic
- GM_PRJ_MERCAT = 5
 Mercator
- GM_PRJ_PS = 6
 Polar Stereographic
- GM_PRJ_POLYC = 7
 Polyconic
- GM_PRJ_EQUIDC_A = 8
 Equidistant Conic A
- GM_PRJ_TM = 9
 Transverse Mercator
- GM_PRJ_STEREO = 10
 Stereographic
- GM_PRJ_LAMAZ = 11
 Lambert Azimuthal
- GM_PRJ_AZMEQD = 12
 Azimuthal Equidistant
- GM_PRJ_GNOMON = 13
 Gnomonic
- GM_PRJ_ORTHO = 14
 Orthographic
- GM_PRJ_GVNSP = 15
 General Vertical Near Side Perspective
- GM_PRJ_SNSOID = 16
 Sinusoidal
- GM_PRJ_EQRECT = 17
 Equirectangular
- GM_PRJ_MILLER = 18
 Miller Cylindrical
- GM_PRJ_VGRINT = 19
 Van der Grinten
- GM_PRJ_HOM_A = 20
 Hotine Oblique Mercator A
- GM_PRJ_ROBIN = 21
 Robinson
- GM_PRJ_SOM_A = 22
 Space Oblique Mercator A
- GM_PRJ_ALASKA = 23
 Alaska Conformal
- GM_PRJ_GOOD = 24
 Interrupted Goode
- GM_PRJ_MOLL = 25
 Molleweide
- GM_PRJ_IMOLL = 26
 Interrupted Molleweide
- GM_PRJ_HAMMER = 27
 Hammer-Aitoff
- GM_PRJ_WAGIV = 28
 Wagner IV
- GM_PRJ_WAGVII = 29
 Wagner VII
- GM_PRJ_OBLEQA = 30
 Oblated Equal Area
- GM_PRJ_EQUIDC_B = 31
 Equidistant Conic B
- GM_PRJ_HOM_B = 32
 Hotine Oblique Mercator B
- GM_PRJ_SOM_B = 33
 Space Oblique Mercator B
- GM_PRJ_NZMG = 34
 New Zealand Map Grid
- GM_PRJ_OB_STEREO = 35
 Oblique Stereographic
- GM_PRJ_GALL = 36
 Gall Stereographic
- GM_PRJ_ECKERT_IV = 37
 Eckert IV
- GM_PRJ_AITOFF_WAGNER = 38
 Aitoff-Wagner
- GM_PRJ_BONNE = 39
 Bonne
- GM_PRJ_CASSINI_SOLDNER = 40
 Cassini-Soldner
- GM_PRJ_MILOS = 41
 Miller Oblated Stereographic
- GM_PRJ_TIMES = 42
 Times
- GM_PRJ_BIPOLAR_CONIC_WEST = 43
 Bipolar Oblique Conic for Western Hemisphere
- GM_PRJ_2PT_EQUIDISTANT = 44
 Two Point Equidistant
- GM_PRJ_FIXED_SCREEN_POS = 45
 Fixed Location on the Screen (not a true map projection)
- GM_PRJ_LAMBERT_CYL_EQ_AREA = 46
 Lambert Cylindrical Equal Area
- GM_PRJ_KROVAK = 47
 Krovak
- GM_PRJ_LAMBERT_MARTA = 48
 Lambert Marta (WSI Lambert)
- GM_PRJ_LAMBERT_NOAA = 49
 Lambert NOAA Port (Marta)
- GM_PRJ_MARTA_SATELLITE = 50
 Marta Satellite projection
- GM_PRJ_WINKEL_I = 51
 Winkel I
- GM_PRJ_POLYCONIC_INT_MAP = 52
 International Map of the World Polyconic
- GM_PRJ_WINKEL_TRIPEL = 53
 Winkel/Tripel
- GM_PRJ_LABORDE = 54
 Laborde (Madagascar)
- GM_PRJ_TM_SOUTH_ORIENTATED = 55
 Transverse Mercator South Orientated
- GM_PRJ_RSO = 56
 RSO (Rectified Skew Orthomorphic)
GM_PRJ_DOUBLE_STEREOGRAPHIC = 57
- GM_PRJ_INT_SINUSOIDAL = 58
 Integerized Sinusoidal (MODIS)
- GM_PRJ_HOM_AZI_NAT_ORIG = 59
 Hotine Oblique Mercator Azimuth at Natural Origin
- GM_PRJ_MERCAT_NAVIONICS = 60
 Navionics Mercator
- GM_PRJ_MERCAT_LOWRANCE = 61
 Lowrance Mercator
- GM_PRJ_NATURAL_EARTH = 62
 Natural Earth projection
- GM_PRJ_GEO_ITALIA = 63
 Geogrpahic (Italia)
- GM_PRJ_CASSINI_SOLDNER_ITALIA = 64
 Cassini-Soldner (Italia)
- GM_PRJ_EQUAL_EARTH = 65
 Equal Earth projection
- GM_PRJ_NUM_PROJ_SYS = 66
 Number of full projection systems
Projection aliases
GM_PRJ_FIRST_ALIAS_PRJ = 0x1000
GM_PRJ_WTM83_91 = GM_PRJ_FIRST_ALIAS_PRJ
- GM_PRJ_MICHIGAN_GEOREF = 0x1001
 Michigan Georef
- GM_PRJ_SWEDISH_GRID_RT90 = 0x1002
 Swedish Grid (RT90)
- GM_PRJ_BRITISH_GRID = 0x1003
 British Grid
- GM_PRJ_NZTM_2000 = 0x1004
 New Zealand Transverse Mercator 2000
- GM_PRJ_LAMBERT_I_NORD = 0x1005
 Lambert I NORD - North of France
- GM_PRJ_LAMBERT_II_CENTRE = 0x1006
 Lambert II CENTRE - Central France
- GM_PRJ_LAMBERT_III_SUD = 0x1007
 Lambert III SUD - Southern France
- GM_PRJ_LAMBERT_IV_CORSE = 0x1008
 Lambert IV CORSE - Corsica
- GM_PRJ_LAMBERT_II_CARTO_ETENDU = 0x1009
 Lambert II CARTO ETENDU - Wide
- GM_PRJ_LAMBERT_93 = 0x100A
 Lambert 93
- GM_PRJ_DUTCH_GRID = 0x100B
 RijksDriehoeks (RD) - Dutch Grid
- GM_PRJ_STEREO70 = 0x100C
 Stereo70 (Romania)
- GM_PRJ_PLATE_CARREE = 0x100D
 Plate Carree (Geographic)
- GM_PRJ_GAUSS_KRUEGER = 0x100E
 Gauss Krueger (6 degree zones)
- GM_PRJ_GAUSS_KRUEGER_GERMANY = 0x100F
 Gauss Krueger (3 degree zones - Germany)
- GM_PRJ_GAUSS_KRUEGER_SLOVENIA = 0x1010
 Gauss Krueger (Slovenia)
- GM_PRJ_AUSTRIAN_GRID = 0x1011
 Austrian Grid
- GM_PRJ_GAUSS_BOAGA = 0x1012
 Gauss Boaga (Italy)
- GM_PRJ_GREEK_GRID = 0x1013
 Greek Grid
- GM_PRJ_POLAND_1992_19 = 0x1014
 Polish Coordinate System (1992/19)
- GM_PRJ_GAUSS_KRUEGER_ARGENTINA = 0x1015
 Gauss Krueger (Argentina)
- GM_PRJ_SWISS_GRID = 0x1016
 Swiss Grid
- GM_PRJ_IRISH_GRID = 0x1017
 Irish Grid
- GM_PRJ_QUEBEC_MTM = 0x1018
 Quebec MTM
- GM_PRJ_ISRAEL_GRID_OLD = 0x1019
 Old Israel Grid
- GM_PRJ_ISRAEL_GRID_NEW = 0x101A
 New Israel Grid
- GM_PRJ_LAMBERT_I_CARTO = 0x101B
 Lambert I - North of France
- GM_PRJ_LAMBERT_III_CARTO = 0x101C
 Lambert III - Southern France
- GM_PRJ_LAMBERT_IV_CARTO = 0x101D
 Lambert IV - Corsica
- GM_PRJ_HUNGARIAN_EOV = 0x101E
 Hungarian National Grid (EOV)
- GM_PRJ_RSO_EAST_MALAYSIA = 0x101F
 East Malaysia BRSO
- GM_PRJ_RSO_WEST_MALAYSIA = 0x1020
 West Malaysia RSO
- GM_PRJ_CASSINI_MALAYSIA = 0x1021
 Cassini Malaysia (zoned projection)
- GM_PRJ_KOREAN_GRID = 0x1022
 Korean Grid
- GM_PRJ_INDIA_GRID = 0x1023
 India Grid
- GM_PRJ_BELGE_1972 = 0x1024
 Belge 1972 (Belgian Lambert 1972)
- GM_PRJ_MGA = 0x1025
 MGA (Map Grid Australia) - use with GDA94
- GM_PRJ_NEW_BRUNSWICK_STEREO = 0x1026
 New Brunswick Stereographic Double
- GM_PRJ_MSTM = 0x1027
 MSTM( Mississippi Transverse Mercator)
- GM_PRJ_SYSTEM_1965 = 0x1028
 System 1965 (Uklad 1965) (Poland)
- GM_PRJ_WISCONSIN_COUNTY = 0x1029
 Wisconsin Coordinate Reference Systems (WISCRS)
- GM_PRJ_PHILIPPINES_GRID = 0x102A
 Philippines Grid
- GM_PRJ_JAPANESE_GRID = 0x102B
 Japanese Grid
- GM_PRJ_ITALIAN_CADASTRAL = 0x102C
 Italian Cadastral Zones
- GM_PRJ_UTM_ITALY = 0x102D
 UTM with just Italy zones and datums
- GM_PRJ_SWEDISH_GRID_SWEREF99 = 0x102E
 Swedish Grid (SWEREF99)
- GM_PRJ_10TM = 0x102F
 10TM (Alberta)
- GM_PRJ_CASSINI_ITALIA_BAS = 0x1030
 Cassini Soldner (Italia) - BAS
- GM_PRJ_CASSINI_ITALIA_PUG = 0x1031
 Cassini Soldner (Italia) - PUG
- GM_PRJ_MINNESOTA_COUNTY = 0x1032
 Minnesota Coordinate Reference Systems
- GM_PRJ_UPS_NORTH = 0x1033
 Universal Polar Stereographic - North Zone
- GM_PRJ_UPS_SOUTH = 0x1034
 Universal Polar Stereographic - South Zone
- GM_PRJ_TRINIDAD_GRID = 0x1035
 Trinidad Grid
- GM_PRJ_3TM = 0x1036
 3TM (Alberta)
- GM_PRJ_GAUSS_KRUEGER_CROATIA = 0x1037
 Gauss Krueger (Croatia)
- GM_PRJ_CROATIA_TM = 0x1038
 Croatia (TM)
- GM_PRJ_CASSINI_ITALIA_CAM = 0x1039
 Cassini Soldner (Italia) - CAM
- GM_PRJ_CASSINI_ITALIA_VDA = 0x103A
 Cassini Soldner (Italia) - VDA
- GM_PRJ_NORWEGIAN_TM = 0x103B
 NTM (Norwegian Transverse Mercator)
- GM_PRJ_POLAND_2000 = 0x103C
 Poland CS2000 Grid
- GM_PRJ_SWISS_GRID_LV95 = 0x103D
 Swiss Grid (LV95)
- GM_PRJ_CASSINI_ITALIA_VEN = 0x103E
 Cassini Soldner (Italia) - VEN
- GM_PRJ_AMG = 0x103F
 AMG (Australian Map Grid) - use with AGD66, AGD84
- GM_PRJ_INDIANA_COUNTY = 0x1040
 Indiana County Coordinate Reference Systems (inGCS)
- GM_PRJ_KANSAS_REGIONAL = 0x1041
 Kansas Regional Coordinate System (KRCS)
GM_PRJ_LAST_ALIAS_PRJ = 0x1042
- GM_PRJ_GEOCALC = 0x1043
 Special Blue Marble Geographics GeoCalc library Projection type meaningful only when GeoCalc Mode is on.
GM_PRJ_UNKNOWN = -1
- globalmapper.UNIT¶
 Unit types for defining projections
- Values:
 GM_PRJ_UNIT_RADIANS = 0
GM_PRJ_UNIT_US_FEET = 1
GM_PRJ_UNIT_METERS = 2
GM_PRJ_UNIT_ARC_SECONDS = 3
GM_PRJ_UNIT_ARC_DEGREES = 4
GM_PRJ_UNIT_INTERNATIONAL_FEET = 5
GM_PRJ_UNIT_NAUTICAL_MILES = 6
- GM_PRJ_UNIT_YARDS = 7
 International Yards/EPSG 9096
GM_PRJ_UNIT_GRADES = 8
GM_PRJ_UNIT_INDIAN_YARD = 9
GM_PRJ_UNIT_CLARKE_FEET = 10
- GM_PRJ_UNIT_INCHES = 11
 US Survey Inches
GM_PRJ_UNIT_LINKS = 12
GM_PRJ_UNIT_CLARKE_LINKS = 13
GM_PRJ_UNIT_CAPE_FEET = 14
GM_PRJ_UNIT_CENTIMETERS = 15
GM_PRJ_UNIT_MILLIMETERS = 16
GM_PRJ_UNIT_KILOMETERS = 17
GM_PRJ_UNIT_CHAINS_BENOIT = 18
GM_PRJ_UNIT_CHAINS_SEARS = 19
GM_PRJ_UNIT_BRITISH_CHAIN_SEARS_1922_TRUNC = 20
GM_PRJ_UNIT_CLARKE_YARD = 21
GM_PRJ_UNIT_GERMAN_LEGAL_METER = 22
GM_PRJ_UNIT_GOLD_COAST_FEET = 23
GM_PRJ_UNIT_SEARS_YARD = 24
GM_PRJ_UNIT_SEARS_FEET = 25
GM_PRJ_UNIT_MILES = 26
GM_PRJ_UNIT_INTERNATIONAL_INCHES = 27
GM_PRJ_NUM_UNITS = 28
GM_PRJ_UNIT_UNKNOWN = -1