galpy.util.coords.Rz_to_uv¶
- galpy.util.coords.Rz_to_uv(R, z, delta=1.0, oblate=False)[source]¶
Calculate prolate or oblate confocal u and v coordinates from R, z, and delta.
- Parameters:
R (float or numpy.ndarray) – Radius.
z (float or numpy.ndarray) – Height.
delta (float or numpy.ndarray, optional) – Focus. Default is 1.0.
oblate (bool, optional) – If True, compute oblate confocal coordinates instead of prolate. Default is False.
- Returns:
(u, v)
- Return type:
tuple
Notes
2012-11-27 - Written - Bovy (IAS)
2017-10-11 - Added oblate coordinates - Bovy (UofT)