.CalculateMagneticField {wmm} | R Documentation |
Calculate the magnetic field for a given location and time using the fitted spherical harmonic model from the 2020 World Magnetic Model.
.CalculateMagneticField(lon, latGD, latGC, radius, time,
wmmVersion = "derived")
lon |
GPS longitude |
latGD |
GPS latitude, geodetic |
latGC |
GPS latitude, geocentric |
radius |
Radius of curvature of prime vertical at given geodetic latitude |
time |
Annualized date time. E.g., 2015-02-01 = (2015 + 32/365) = 2015.088 |
wmmVersion |
String representing WMM version to use. Must be consistent with |
Expected magnetic field from WMM2020, m_{\lambda_t,\varphi_t,h_t,t}^{WMM}
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