Proj
E902848
Proj is an open-source library for performing cartographic projections and coordinate transformations widely used in geographic information systems.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T11060098 — 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: Proj Context triple: [QGIS, usesLibrary, Proj]
-
A.
The Project
The Project is an Australian television news and current affairs panel show on Network Ten that blends serious journalism with comedy and pop culture commentary.
-
B.
Proz
Proz is a musical artist known for contributing featured vocals to the track "Birth of a Prince."
-
C.
PRO
PRO is the Professional Referee Organization that manages and develops professional soccer match officials in the United States and Canada.
-
D.
Neo project
The Neo project is a major urban redevelopment initiative on Brussels’ Heysel Plateau, aiming to transform the area into a mixed-use district with housing, offices, retail, and leisure facilities.
-
E.
PRD
PRD is a major left-of-center political party in Mexico known formally as the Party of the Democratic Revolution.
- 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: Proj Target entity description: Proj is an open-source library for performing cartographic projections and coordinate transformations widely used in geographic information systems.
-
A.
The Project
The Project is an Australian television news and current affairs panel show on Network Ten that blends serious journalism with comedy and pop culture commentary.
-
B.
Proz
Proz is a musical artist known for contributing featured vocals to the track "Birth of a Prince."
-
C.
PRO
PRO is the Professional Referee Organization that manages and develops professional soccer match officials in the United States and Canada.
-
D.
Neo project
The Neo project is a major urban redevelopment initiative on Brussels’ Heysel Plateau, aiming to transform the area into a mixed-use district with housing, offices, retail, and leisure facilities.
-
E.
PRD
PRD is a major left-of-center political party in Mexico known formally as the Party of the Democratic Revolution.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
geospatial software
ⓘ
open-source software ⓘ software library ⓘ |
| feature |
grid-based transformations
ⓘ
high-accuracy datum shifts ⓘ pipeline coordinate operations ⓘ transformation catalog ⓘ |
| formerName | PROJ.4 ⓘ |
| governedBy | OSGeo PROJ Project Steering Committee ⓘ |
| hasLanguageBinding |
.NET
ⓘ
C++ ⓘ Python ⓘ R ⓘ |
| hostedOn | GitHub ⓘ |
| implementsStandard |
EPSG geodetic parameter dataset
ⓘ
linked to:
EPSG registry
OGC WKT for CRS ⓘ |
| isFreeSoftware | true ⓘ |
| license | MIT License ⓘ |
| maintainer | OSGeo community ⓘ |
| name | PROJ ⓘ |
| openSource | true ⓘ |
| partOf | OSGeo software stack ⓘ |
| programmingLanguage | C ⓘ |
| provides |
command-line utilities
ⓘ
programming API ⓘ |
| repositoryURL | https://github.com/OSGeo/PROJ ⓘ |
| softwareDomain |
cartographic projections
ⓘ
coordinate transformations ⓘ |
| supports |
2D coordinates
ⓘ
3D coordinates ⓘ coordinate reference systems ⓘ datum transformations ⓘ geodetic transformations ⓘ geographic CRS ⓘ map projections ⓘ projected CRS ⓘ time-dependent coordinate operations ⓘ vertical CRS ⓘ |
| supportsFormat |
EPSG codes
ⓘ
PROJ string notation ⓘ WKT1 ⓘ WKT2 ⓘ
linked to:
WKT
|
| usedBy |
GDAL
ⓘ
GRASS GIS ⓘ MapServer ⓘ PostGIS ⓘ QGIS ⓘ |
| usedIn | geographic information systems ⓘ |
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: Proj Description of subject: Proj is an open-source library for performing cartographic projections and coordinate transformations widely used in geographic information systems.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Proj
linked to: Proj