Wikidata:Property proposal/light characteristic

defines light characteristic

Originally proposed at Wikidata:Property proposal/Creative work

Not done

Description	pattern described by item
Data type	External identifier
Domain	light characteristic (Q1738955)
Allowed values	as light characteristic (P1030) on lighthouses
Example 1	flashing green light every 5 seconds (Q45735358) → Fl G 5s
Example 2	flashing white light twice every 20 seconds (Q66763996) → Fl(2) W 20s
Example 3	fixed red light (Q64843249) → F R
See also	light characteristic (P1030) Iconclass notation (P1256) and depicts Iconclass notation (P1257)
Distinct-values constraint	yes
Wikidata project	WikiProject Lighthouses (Q21830288)

Motivation

On lighthouses, light characteristic (P1030) provides description of the light in a special notation. Some of these use a qualifier to link to an item describing these patterns. Sample: Q4356900#P1030 linking to flashing green light every 5 seconds (Q45735358) mentioned above.

On these items, currently P1030 is used as well as well (sample: Q45735358#P1030).

The other day, we disantangled classifications for subjects when used on works with that subject from their use on the topics they describe (see proposals thanks to @Epìdosis:). depicts Iconclass notation (P1257) and Iconclass notation (P1256) forms a similar pair of properties.

I think we should do the same here: the string datatype property P1030 would remain on items for lights and this new distinct valued property would go on items for light characteristic (Q1738955). (Add your motivation for this property here.) --- Jura 08:53, 1 May 2021 (UTC)[reply]

Notified participants of WikiProject Lighthouses @MSGJ: --- Jura 08:53, 1 May 2021 (UTC)[reply]

Discussion

I'm sorry, but I don't understand this proposal. What is going to be changed? /ℇsquilo 18:41, 1 May 2021 (UTC)[reply]

@Esquilo: The property being used at statements like Q45735358#P1030 for items that are about the pattern (not the lighthouses), nothing else. --- Jura 18:51, 1 May 2021 (UTC)[reply]

And lighthouses should use the qualifier statement is subject of (P805) like in Q4356900#P1030? Is that not pretty much introduced by now? /ℇsquilo 19:07, 1 May 2021 (UTC)[reply]

The use (or not) of the qualifier is independent of this proposal, but yes, at least for frequent patterns. --- Jura 19:10, 1 May 2021 (UTC)[reply]

I'm not a subject matter expert on lighthouses but... Why not just get rid of the codes on lighthouses, use this property to link to the item and then put the string code on the items? BrokenSegue (talk) 17:19, 16 May 2021 (UTC)[reply]

See Wikidata_talk:WikiProject_Lighthouses#descriptive_items_for_P1030. --- Jura 08:48, 17 May 2021 (UTC)[reply]

@Jura1, Esquilo, BrokenSegue: Not done: the consensus against the property is visible on the face. —MasterRus21thCentury (talk) 22:40, 29 April 2022 (UTC)[reply]