vector2xy#
- classmethod SphericalProjection.vector2xy(v: Vector3d | ndarray) ndarray [source]#
[Deprecated] Convert from cartesian to spherical coordinates according to the ISO 31-11 standard.
- Parameters:
- v
3D vector(s) on the form
[[x0, y0, z0], [x1, y1, z1], ...]
.
- Returns:
spherical_coordinates
Spherical coordinates theta, phi and r on the form
[[theta1, phi1, r1], [theta2, phi2, r2], ...]
.
Notes
Deprecated since version 0.8.0: Function vector2xy() is deprecated and will be removed in version 0.9.0.
Examples
>>> import numpy as np >>> from kikuchipy.projections import SphericalProjection >>> v = np.random.random_sample(30).reshape((10, 3)) >>> theta, phi, r = SphericalProjection.vector2xy(v).T >>> np.allclose(np.arccos(v[:, 2] / r), theta) True >>> np.allclose(np.arctan2(v[:, 1], v[:, 0]), phi) True