J’ouvre un sujet pour tout ce qui concerne le tag des dates.
https://wiki.openstreetmap.org/wiki/FR:Open_Historical_Map/OHM_Basics#Dates_de_début_&_de_fin
Actuellement, pour indiquer un siècle (Xe siècle), il est recommandé de mettre « C10 » en start_date : FR:Key:start_date - OpenStreetMap Wiki
Malheureusement, cela ne fonctionne pas dans le moteur de OHM. Le tag start_date semble ignoré et le batiment est visible à toutes les dates.
Comment faire ?
Exemple : Batiment taggé start_date=C17 apparaissant an l’an mil : Way: 199484461 | OpenHistoricalMap
bibi
Mai 29, 2023, 8:47
2
Je vois que tu as essayé de rajeunir le bâtiment ;-). tu peux trouver l’année et te ramener à une date précise ;-). Sinon tu gagnes le droit de créer un ticket sur GitHub pour leur signaler le problème.
Ils répondent que ce n’est J’ai ouvert un bug, mais d’après l’équipe de dev, ce n’est pas un bug, car ce n’est pas officiellement supporté, juste des réflexions visibles sur le wiki…
opened 09:08AM - 29 May 23 UTC
dates
**Bug description**
Using approximating dates as described on the wiki does not… work.
The elements using approximating dates are shown at all dates, even if they should appear on the mpa only when their start_date is reached.
The interpretation of the straing start_dates should match the wiki documentation (or the documentation should be adapted to reflect what is recommended AND working). Approximative dates are necessary for OHM projects, so the conversion of tags as start_date=C11 to reflect 11th century should be used as start_date=01/01/1000.
**Repro Steps**
Set an approximative start_date on an object (eg building : start_date=C11 for 11th century)
Go to OHM after update and set a date before 11th century (as 01/01/500)
Check that the building is still visible, even it should not.
**Screenshots & URL**
Exemple : https://www.openhistoricalmap.org/way/199484461#map=19/44.81613/1.14859&layers=O&date=0200-12-16&daterange=0200-12-16,1850-01-02
This building has a start_date=C17 but is visible all the time.
Wiki page --> [Approximations](https://wiki.openstreetmap.org/wiki/Key:start_date#Approximations)
To be reviewed :
start_date=~1855 (some time around 1855)
start_date=1860s (during the 1860s (i.e 1860 → 1869 inclusive))
start_date=~1940s (probably during the 1940s)
start_date=480 BC (for something that happened in that year)
start_date=before 1855 (during 1854 or before)
start_date=before 1910-01-20 (before a specific date - possibly when a photo was taken)
start_date=after 1823 (after 1 January 1823 - possibly based on the year in which a map was produced)
**start_date=C18 (during the 18th century)**
start_date=mid C14 (some time during the middle of the 14th century)
start_date=late 1920s
start_date=~C13 (probably in the 13th century)
start_date=1914..1918 indicates some time during WW1.
start_date=2008-08-08..2008-08-24 indicates some time during the Beijing Olympics.
start_date=mid C17..late C17
start_date=j:1918-01-31 (a date using the Julian calendar, equivalent to 1918-02-13 in the Gregorian calendar)
start_date=jd:2455511 (Using the [Julian day](https://en.wikipedia.org/wiki/Julian_day) system, equivalent to 2010-11-10 in the Gregorian calendar)
Muslim calendar?
Cela dit, le ticket original qui demande l’implémentation de dates approximative est le ticket n°15 (ca date !) :
opened 08:44PM - 27 May 20 UTC
dates
long-term
time
i18n
**What's your idea for a cool feature that would help you use OHM better.**
It … would be great to have support for uncertain dates and time ranges.
This uncertainty could accommodate for vague or unknown time starts, approximate dates, etc.
More details can be found at: https://www.iso.org/standard/70908.html
This feature will have significant impacts across OHM, to include data storage, rendering rules, and time slider behavior.
**Current workarounds**
None - the site currently requires specific, unqualified dates in the old 8601 format.
A suivre…