id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
31747 Euclidean 3-space: offer several flavours of spherical coordinates Samuel Lelièvre "Spherical coordinates `(r, theta, phi)` involve
one length coordinate `r` and two angle
coordinates `theta` and `phi`, one representing
longitude and varying in a length `2*pi` interval,
typically `[0, 2*pi]`, the other representing
latitude and varying in a length `pi` interval:
either `[0, pi]` if the latitude is measured
from one of the poles, or `[-pi/2, pi/2]`
if the latitude is measured from the equator.
Sage's euclidean space has a `spherical_coordinates`
method using pole-based latitude. Providing
equator-based latitude would be a nice option.
Besides, the order of the angular coordinates could be customized.
Requested at
- [https://ask.sagemath.org/question/56843 Ask Sage question 56843: Differential forms on non-standard spherical coordinates]" enhancement new major sage-9.8 manifolds Eric Gourgoulhon Samuel Lelièvre N/A