bfieldtools.sphtools.potential¶

bfieldtools.sphtools.potential(p, acoeffs, bcoeffs, lmax, normalization='default', R=1)¶

Computes magnetic scalar potential from the sph coefficients. Ignores the ‘DC’ component l=0.

Parameters

p: Nx3 array: coordinates in which the potential is computed
acoeffs: lmax*(lmax+2)x1 array: spectral coefficients of r**l terms
bcoeffs: lmax*(lmax+2)x1 array: spectral coefficients of r**(-l) terms
lmax: int: maximum degree l which is used in computing
normalization: string: which normalization scheme to use “default”: Integration over unit sphere <Y_lm,Y_l’m’> = delta_ll’mm’ (default) “energy”: each term in inner/outer basis function with respect to sphere with radius R is normalized to unit energy
R: float: Sphere radius that separates inner/outer components

Returns