chaosmagpy.coordinate_utils.basevectors_sm¶
- chaosmagpy.coordinate_utils.basevectors_sm(time, dipole=None)[source]¶
Compute the unit base vectors of the SM coordinate system.
- Parameters:
- timefloat or ndarray, shape (…)
Time given as modified Julian date, i.e. with respect to the date 0h00 January 1, 2000 (mjd2000).
- dipolendarray, shape (…, 3), optional
Dipole spherical harmonics \(g_1^0\), \(g_1^1\) and \(h_1^1\). Defaults to
basicConfig['params.dipole']
.
- Returns:
- sm_1, sm_2, sm_3ndarray, shape (…, 3)
SM unit base vectors resolved into the cartesian components of GEO.