Property talk:P9284

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GB1900 ID
identifier for a place in the GB1900 project transcription of the UK Ordnance Survey six-inch-to-one-mile map, 1888-1913

Represents	GB1900 dataset (Q105554422)
Associated item	GB1900 project (Q105554350)
Applicable "stated in" value	GB1900 dataset (Q105554422)
Data type	External identifier
Domain	geographic location (Q2221906) or physical structure (Q15710813)
Allowed values	[0-9a-f]{24}
Example	Palace of Westminster (Q62408) → 57e3dd302c66dca408000096 Chelsea (Q743535) → 57f17b952c66dca32201b66d Thorney House (Q26458246) → 58e7cb752c66dcf8fa0b4ada
Related to country	United Kingdom (Q145) (See 327 others)
Lists	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 external identifier 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 Database reports/Constraint violations/P9284 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 26,656 Main statement 26,653 >99.9% of uses Qualifier 3 <0.1% of uses
Search for values

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

Single value: this property generally contains a single value. (Help)

List of violations of this constraint: Database reports/Constraint violations/P9284#Single value, hourly updated report, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

List of violations of this constraint: Database reports/Constraint violations/P9284#Unique value, hourly updated report, SPARQL (every item), SPARQL (by value)

Type “geographic location (Q2221906), physical structure (Q15710813)”: item must contain property “instance of (P31), subclass of (P279)” with classes “geographic location (Q2221906), physical structure (Q15710813)” 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).
List of violations of this constraint: Database reports/Constraint violations/P9284#Type Q2221906, Q15710813, SPARQL

Format “[0-9a-f]{24}”: value must be formatted using this pattern (PCRE syntax). (Help)

List of violations of this constraint: Database reports/Constraint violations/P9284#Format, hourly updated report, SPARQL

Scope is as main value (Q54828448): the property must be used by specified way only (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/P9284#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (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/P9284#Entity types

Required qualifier “subject named as (P1810)”: this property should be used with the listed qualifier. (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/P9284#mandatory qualifier, SPARQL

Required qualifier “URL (P2699)”: this property should be used with the listed qualifier. (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/P9284#mandatory qualifier, SPARQL

Required qualifier “coordinate location (P625)”: this property should be used with the listed qualifier. (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/P9284#mandatory qualifier, SPARQL

GB1900 on WD by P31 - map

Here, fwiw, a map of GB1900 coordinates on WD, taking P31's label as the layer value. --Tagishsimon (talk) 22:42, 13 April 2023 (UTC)

#title:location of P9284 'GB1900 ID' statements
#defaultView:Map{"hide":["?coordinates"]}
SELECT ?site ?siteLabel ?coordinates ?layer
WHERE 
{
  ?site p:P9284/pq:P625 ?coordinates.
  ?site wdt:P31 ?type 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". 
                         ?type rdfs:label ?layer .
                         ?site rdfs:label ?siteLabel}
} order by ?layer

location of P9284 'GB1900 ID' statements

<NO VALUE>

Just to note, I'm adding P9284=<NO VALUE> to GB geolocatable items which do not have a GB1900 ID - e.g. Q24641428#P9284 - as a way of distinguishing these from items that have coordinates but no GB1900 ID (P9284). report --Tagishsimon (talk) 22:42, 13 April 2023 (UTC)