thetaphi_plane

caput.astro.coordinates.spherical.thetaphi_plane(sph_arr: numpy.typing.ArrayLike[numpy.integer | numpy.floating]) → tuple[numpy.ndarray[numpy.floating], numpy.ndarray[numpy.floating]]

Compute unit vectors from spherical polar coordinate positions.

Parameters:

sph_arrarray_like

Angular positions (in spherical polar coordinates).

Returns:

thetaarray_like

theta unit vector.

phiarray_like

phi unit vector.