cartesian_to_spherical

astropy.coordinates.distances.cartesian_to_spherical(x, y, z)

Converts 3D rectangular cartesian coordinates to spherical polar coordinates.

Note that the resulting angles are latitude/longitude or elevation/azimuthal form. I.e., the origin is along the equator rather than at the north pole.

Note

This is a low-level function used internally in astropy.coordinates. It is provided for users if they really want to use it, but it is recommended that you use the astropy.coordinates coordinate systems.

Parameters :

x : scalar or array-like

The first cartesian coordinate.

y : scalar or array-like

The second cartesian coordinate.

z : scalar or array-like

The third cartesian coordinate.

Returns :

r : float or array

The radial coordinate (in the same units as the inputs).

lat : float or array

The latitude in radians

lon : float or array

The longitude in radians