SCR 3-1104
SCR 3-1104: Increase length of START_TIME & STOP_TIME keywords
Priority: high
Problem Summary
The current length of the START_TIME and STOP_TIME keywords is 24 characters which provides for a maximum time measurement to within milliseconds: CCYY-MM-DDTHH:MM:SS[.sss] MRO/HIRISE labels specify the precision of these keyword-values to within micro-seconds. The team proposes to increase the length of these keywords to 27 characters to accommodate the increased precision of the measured data and to amend the definition of these keywords in the data dictionary to reflect the modification to the formation rules. Change: Formation rule: YYYY-MM-DDThh:mm:ss[.fff]. To: Formation rule: YYYY-MM-DDThh:mm:ss[.ffffff].
Working Group
R. Joyner (lead) R. Joyner
Originator: R. Joyner
Standards Change Request
| Version | Date | Author(s) | Format | Note |
|---|---|---|---|---|
| 1 | 2007-02-07 | R. Joyner | DOC | |
| 2 | 2007-03-19 | A. Raugh | DOC | |
| 3 | 2007-04-03 | A. Raugh | DOC |
Discussion
- Discussion Blog
- Telecons: 2007-02-28 (HTML), 2007-03-07 (HTML), 2007-03-21 (HTML), 2007-04-04 (HTML), 2007-04-18 (WAV), 2007-05-02 (WAV), 2007-05-16 (WAV)
Supplementary Material
Status
| Status | Date | Task | Responsible Party | Response |
|---|---|---|---|---|
| SUBMITTED | 2007-02-08 | |||
| DRAFT | 2007-03-01 | |||
| RECOMMENDED | 2007-04-04 | |||
| APPROVED | 2007-04-16 | |||
| IN_IMPLEMENTATION | 2007-04-16 | |||
| TEST_RELEASE | 2007-05-14 |
Votes
Vote to RECOMMEND version 1 of the SCR be moved to Implementation stage.
| Node | Representative | Version 1 |
|---|---|---|
| ATM | Lyle Huber | yes |
| EN | Steve Hughes | yes |
| GEO | Susie Slavney | yes |
| IMG | Patty Garcia | yes |
| NAIF | Boris Semenov | yes |
| PPI | Todd King | no |
| RINGS | Mitch Gordon1 | yes |
| RS | Dick Simpson | no |
| SBN | Anne Raugh | no |
1
with a lein
Vote to RECOMMEND version 2 of the SCR for either: (a) Implementation; or (b) Management Council vote.
| Node | Representative | Version 2 |
|---|---|---|
| ATM | Lyle Huber1 | no |
| EN | Ron Joyner | no |
| GEO | Susie Slavney | yes |
| IMG | Patty Garcia2 | yes |
| NAIF | Boris Semenov | not present |
| PPI | Todd King3 | no |
| RINGS | Mitch Gordon4 | no |
| RS | Dick Simpson5 | no |
| SBN | Anne Raugh | yes |
1
ATMOS says nay to both options a and b. 50 characters?
2
(to implementation stage); Although I still believe it would be better to increase the length of the entire class rather than taking this one-by-one approach, which only serves to introduce more inconsistencies.
3
The increase to 50 characters means that we can represent fractional seconds to 30 decimal places. This seems to be capricious. A total length of 27-30 seems much more justifiable.
4
option a.
5
I, like Todd, am not quite ready to see values with 10^-29 second precision
Vote to RECOMMEND version 3 of the SCR for either: (a) Implementation; or (b) Management Council vote.
| Node | Representative | Version 3 |
|---|---|---|
| ATM | Lyle Huber | yes |
| EN | Steve Hughes | yes |
| GEO | Susie Slavney | yes |
| IMG | Patty Garcia | yes |
| NAIF | Boris Semenov | not present |
| PPI | Todd King | yes |
| RINGS | Mitch Gordon | yes |
| RS | Dick Simpson | no |
| SBN | Anne Raugh | yes |