pyvista.cartesian_to_spherical#

cartesian_to_spherical(x, y, z)[source]#

Convert 3D Cartesian coordinates to spherical coordinates.

Parameters:

x, y, znumpy.ndarray: Cartesian coordinates.

Returns:

rnumpy.ndarray: Radial distance.
phinumpy.ndarray: Angle (radians) with respect to the polar axis. Also known as polar angle.
thetanumpy.ndarray: Angle (radians) of rotation from the initial meridian plane. Also known as azimuthal angle.

Examples

>>> import numpy as np
>>> import pyvista as pv
>>> grid = pv.ImageData(dimensions=(3, 3, 3))
>>> x, y, z = grid.points.T
>>> r, phi, theta = pv.cartesian_to_spherical(x, y, z)