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Geoid datasets used by the GeographicLib::Geoid class and the GeoidEval
tool to compute geoid heights.
Available geoid data files
size (MB)
name geoid grid tar.bz2 disk
egm84-30 EGM84 30' 0.5 0.6
egm84-15 EGM84 15' 1.5 2.1
egm96-15 EGM96 15' 1.5 2.1
egm96-5 EGM96 5' 11 19
egm2008-5 EGM2008 5' 11 19
egm2008-2_5 EGM2008 2.5' 35 75
egm2008-1 EGM2008 1' 170 470
Gravity models used by the GeographicLib::GravityModel class and the
Gravity tool to compute gravity fields.
Available gravity models
size (kB)
name degree tar.bz2 disk
egm84 18 27 26
egm96 360 2100 2100
egm2008 2190 76000 75000
wgs84 20 1 1
grs80 20 1 1
Magnetic models used by the GeographicLib::MagneticModel class and the
MagneticField tool to compute magnetic fields.
Available magnetic models
size (kB)
name degree years tar.bz2 disk
wmm2010 12 2010-2015 2 3
wmm2015 12 2015-2020 2 3 *deprecated*
wmm2015v2 12 2015-2020 2 3
wmm2020 12 2020-2025 2 3
igrf11 13 1900-2015 7 25
igrf12 13 1900-2020 7 26
igrf13 13 1900-2025 7 28
emm2010 739 2010-2015 3700 4400
emm2015 729 2000-2020 660 4300
emm2017 790 2000-2022 1740 5050
The size columns give the download and installed sizes of the datasets.
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