WKT

E427692

WKT (Well-Known Text) is a text-based markup language used to represent vector geometry objects such as points, lines, and polygons in geographic information systems.

All labels observed (3)

Label Occurrences
WKT canonical 2
WKT2 1
Well-Known Text 1

How this entity was disambiguated

Statements (48)

Predicate Object
instanceOf geometry representation standard ⓘ
geospatial data format ⓘ
text-based markup language ⓘ
advantage easy to debug and inspect ⓘ
human-readable geometry representation ⓘ
alternativeBinaryForm Well-Known Binary ⓘ
category GIS standard ⓘ
geospatial vector format ⓘ
coordinateOrder x y (longitude latitude in many GIS contexts) ⓘ
dataModel vector geometry ⓘ
domain geographic information systems ⓘ
geospatial software ⓘ
spatial databases ⓘ
example LINESTRING (30 10, 10 30, 40 40) ⓘ
POINT (30 10) ⓘ
POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10)) ⓘ
fullName Well-Known Text ⓘ
geometryTypeKeyword GEOMETRYCOLLECTION ⓘ
LINESTRING ⓘ
MULTILINESTRING ⓘ
MULTIPOINT ⓘ
MULTIPOLYGON ⓘ
POINT ⓘ
POLYGON ⓘ
hasConcept empty geometries (e.g., POINT EMPTY) ⓘ
geometry collections of mixed types ⓘ
limitation less compact than binary formats ⓘ
no inherent topology model ⓘ
relatedStandard Simple Feature Access ⓘ
linked to: Simple Features

WKB ⓘ
serializationFormat plain text ⓘ
standardizedBy Open Geospatial Consortium ⓘ
supportsDimension 2D coordinates ⓘ
3D coordinates ⓘ
measured coordinates (M) ⓘ
supportsSRID yes (via external or extended conventions) ⓘ
syntaxFeature geometry type followed by coordinate tuples in parentheses ⓘ
usedFor representing geometry collections ⓘ
representing line strings ⓘ
representing multi-part geometries ⓘ
representing points ⓘ
representing polygons ⓘ
representing vector geometry objects ⓘ
usedIn GIS file formats and APIs ⓘ
PostGIS ⓘ
spatial SQL databases ⓘ
version WKT for Coordinate Reference Systems ⓘ
WKT for Simple Features ⓘ

How these facts were elicited

Referenced by (4)

Full triples — surface form annotated when it differs from this entity's canonical label.

PostGIS → supportsFormat → WKT ⓘ
WKB → relatedStandard → Well-Known Text ⓘ
linked to: WKT
SpatiaLite → supports → WKT ⓘ
Proj → supportsFormat → WKT2 ⓘ
linked to: WKT