Property talk:P2923

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focal height
height of the lamp of a lighthouse from water level

Description	height of the lamp of a lighthouse from sea level
Represents	focal height of lighthouse (Q1409551)
Data type	Quantity
Template parameter	|focalheight= in en:Template:Infobox_lighthouse
Domain	According to this template: lighthouse (Q39715) According to statements in the property: lighthouse (Q39715), lighthouse light (Q106975467) or beacon (Q7321258) When possible, data should only be stored as statements
Allowed values	1 ≤ 𝓧 ≤ 530
Allowed units	metre (Q11573) or foot (Q3710)
Example	Bengtskär lighthouse (Q3737012) → 51 metre Cape Canaveral Light (Q5034639) → 137 foot
Tracking: usage	Category:Pages using Wikidata property P2923 (Q28648934)
See also	lighthouse range (P2929), height (P2048), light characteristic (P1030), luminous intensity (P3041)
Lists	list of lighthouses by focal height (Q30317363) Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value User:Laboramus/Units/P2923 (Units used) Database reports/Constraint violations/P2923 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 7,273 Main statement 7,198 99% of uses Qualifier 75 1% of uses

[create Create a translatable help page (preferably in English) for this property to be included here]

Units: “metre (Q11573), foot (Q3710)”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Units

Range from “1” to “530”: values should be in the range from “1” to “530”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P2923#Range, hourly updated report

Type “lighthouse (Q39715), lighthouse light (Q106975467), beacon (Q7321258)”: item must contain property “instance of (P31)” with classes “lighthouse (Q39715), lighthouse light (Q106975467), beacon (Q7321258)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). Known exceptions: no label (Q42308845)
List of violations of this constraint: Database reports/Constraint violations/P2923#Type Q39715, Q106975467, Q7321258, SPARQL

Item “country (P17)”: Items with this property should also have “country (P17)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Item P17, SPARQL

Item “located in the administrative territorial entity (P131)”: Items with this property should also have “located in the administrative territorial entity (P131)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Item P131, SPARQL

Item “light characteristic (P1030)”: Items with this property should also have “light characteristic (P1030)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Item P1030, SPARQL

Item “coordinate location (P625)”: Items with this property should also have “coordinate location (P625)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Item P625, SPARQL

Item “inception (P571)”: Items with this property should also have “inception (P571)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Item P571, SPARQL

Item “located in or next to body of water (P206)”: Items with this property should also have “located in or next to body of water (P206)”. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2923#Item P206, SPARQL

This property is being used by: hy:Կաղապար:Տեղեկաքարտ Փարոս eu:Txantiloi:Eraikin infotaula automatikoa, eu:Txantiloi:Eraikin infotaula sv:Modul:Fyr es:Plantilla:Ficha de faro ast:Plantía:Ficha de faru, ast:Plantía:Edificiu, ast:Plantía:Edificiu2 fa:الگو:Infotaula edifici/آزمایشی ha:Template:Infobox building, ha:Samfuri:Infobox building incubator:Template:Wp/shi/Infobox building it:Template:Faro kab:Talɣa:Infobox building uk:Шаблон:Картка:Маяк shi:Talɣa:Infobox building br:Patrom:Infobox tour-tan/gouloù th:แม่แบบ:กล่องข้อมูล ประภาคาร/ไฟ Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Subproperty

Shouldn't this property be a subproperty of elevation above sea level (P2044)? Lymantria (talk) 06:37, 23 June 2016 (UTC)

 Done Lymantria (talk) 08:36, 2 July 2016 (UTC)

Double constraint

Hi,

Right now, there is two time more-or-less the same constraint :

⟨ P2923 ⟩ property constraint (P2302) ⟨ item-requires-statement constraint (Q21503247)    ⟩
property (P2306) ⟨ P31 ⟩
item of property constraint (P2305) ⟨ lighthouse (Q39715)    ⟩

which is very narrow and limitative to lighthouses using instance of (P31) = lighthouse (Q39715)

and

⟨ P2923 ⟩ property constraint (P2302) ⟨ subject type constraint (Q21503250)    ⟩
class (P2308) ⟨ lighthouse (Q39715)    ⟩
relation (P2309) ⟨ instance of (Q21503252)    ⟩

which is the same idea but more flexible and allow to check the lighthouses not using instance of (P31) = lighthouse (Q39715).

I removed the first but Esquilo reverted me and asked for explanations here. Here they are, I can give more if needed.

Cdlt, VIGNERON (talk) 15:02, 20 December 2017 (UTC)

• It's different. The problem with the type constraint is that some applications use just that and others don't support it fully. Is there a lighthouse where you were unhappy with the result?
  --- Jura 15:16, 20 December 2017 (UTC)