bfieldtools.sphtools.derxlm

bfieldtools.sphtools.derxlm(l, m, theta)

Derivative of Xlm with respect to theta.

Parameters

l: int

degree of Xlm

m: int

order of Xlm

theta: Nx1 array

evaluation points, theta at spherical coordinates

Returns

derxlm: Nx1 array

dXlm/dtheta at theta