ST_Buffer
E427699
ST_Buffer is a PostGIS spatial function that creates buffer geometries around input features at a specified distance, often used for proximity and impact analyses in GIS.
All labels observed (1)
| Label | Occurrences |
|---|---|
| ST_Buffer canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4279538 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ST_Buffer Context triple: [PostGIS, supportsOperation, ST_Buffer]
-
A.
UNESCO World Heritage buffer boundary
The UNESCO World Heritage buffer boundary is a protective zone surrounding a designated World Heritage site, intended to preserve its setting, integrity, and environmental context from potentially harmful development or change.
-
B.
Black Sea Biosphere Reserve buffer zone
The Black Sea Biosphere Reserve buffer zone is a protected transitional area surrounding the core Black Sea Biosphere Reserve that helps safeguard its ecosystems, including sites such as Berezan Island, from external human impacts.
-
C.
Central Bube
Central Bube is a regional dialect variety of the Bube language spoken by the Bubi people of Equatorial Guinea.
-
D.
Cyprus buffer zone
The Cyprus buffer zone is a demilitarized strip of land patrolled by the United Nations that separates the Greek Cypriot and Turkish Cypriot-controlled areas of the island.
-
E.
Pastoria
Pastoria is the former king of the Land of Oz and the father of Princess Ozma in L. Frank Baum’s Oz series.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: ST_Buffer Target entity description: ST_Buffer is a PostGIS spatial function that creates buffer geometries around input features at a specified distance, often used for proximity and impact analyses in GIS.
-
A.
UNESCO World Heritage buffer boundary
The UNESCO World Heritage buffer boundary is a protective zone surrounding a designated World Heritage site, intended to preserve its setting, integrity, and environmental context from potentially harmful development or change.
-
B.
Black Sea Biosphere Reserve buffer zone
The Black Sea Biosphere Reserve buffer zone is a protected transitional area surrounding the core Black Sea Biosphere Reserve that helps safeguard its ecosystems, including sites such as Berezan Island, from external human impacts.
-
C.
Central Bube
Central Bube is a regional dialect variety of the Bube language spoken by the Bubi people of Equatorial Guinea.
-
D.
Cyprus buffer zone
The Cyprus buffer zone is a demilitarized strip of land patrolled by the United Nations that separates the Greek Cypriot and Turkish Cypriot-controlled areas of the island.
-
E.
Pastoria
Pastoria is the former king of the Land of Oz and the father of Princess Ozma in L. Frank Baum’s Oz series.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
GIS buffer operation
ⓘ
PostGIS spatial function ⓘ |
| belongsTo | PostGIS geometry processing functions NERFINISHED ⓘ |
| canCreate |
dissolved buffer around multi-features
ⓘ
overlapping buffers for nearby features ⓘ |
| coordinateSystemBehavior | distance units depend on geometry SRID ⓘ |
| geographyBehavior | distance measured in meters on spheroidal model ⓘ |
| geometryBehavior | distance measured in coordinate units ⓘ |
| hasPurpose |
distance-based selection
ⓘ
impact analysis ⓘ proximity analysis ⓘ spatial planning ⓘ spatial risk assessment ⓘ |
| inputParameter |
buffer distance
ⓘ
input geometry ⓘ optional end cap style ⓘ optional join style ⓘ optional mitre limit ⓘ optional number of segments per quarter circle ⓘ optional side selection ⓘ |
| introducedFor | spatial analysis in SQL queries ⓘ |
| isDeterministic | true ⓘ |
| negativeDistanceEffect | creates inward buffer (shrink) for polygons ⓘ |
| operatesOn |
geography data type
ⓘ
geometry data type ⓘ |
| positiveDistanceEffect | creates outward buffer (expand) for geometries ⓘ |
| produces | buffer geometry ⓘ |
| returnsType |
geography
ⓘ
geometry ⓘ |
| supports |
negative distances
ⓘ
positive distances ⓘ |
| supportsGeometryTypes |
linestrings
ⓘ
multi-geometries ⓘ points ⓘ polygons ⓘ |
| supportsOption |
end cap flat
ⓘ
end cap round ⓘ end cap square ⓘ join bevel ⓘ join mitre ⓘ join round ⓘ |
| typicalUseCase |
creating impact zones around facilities
ⓘ
creating safety or hazard zones ⓘ finding features within a given distance of roads ⓘ service area approximation ⓘ |
| usedIn |
PostGIS
NERFINISHED
ⓘ
PostgreSQL databases ⓘ |
| usesAlgorithm | GEOS buffer implementation NERFINISHED ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: ST_Buffer Description of subject: ST_Buffer is a PostGIS spatial function that creates buffer geometries around input features at a specified distance, often used for proximity and impact analyses in GIS.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.