FA-12145 / Astronomical coordinate conventions / Member archive
A frame label is changed without transforming its coordinates · case 05
A frame label is changed without transforming its coordinates.
Case contract
Toy one-axis catalog adapter: transform offset maps source A to B; reverse mapping subtracts it; identical frames preserve x. Frames are A or B.
Why this case matters
Astronomical catalog and observation adapters must preserve the declared coordinate convention across software boundaries.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| forward | [5, "B"] | [15, "B"] | Failed |
MEMBER ARCHIVE
The complete case is available to members.
This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
Member access is invitation-based. Sign in with your invited account to inspect the sources.
Sign in to the archive ↗