2020 year; OGC 06-103r4, PostGIS 3.0
| Type | OGC | PG |
|---|---|---|
| Geometry | ✔️ | ✔️ |
| Point | ✔️ | ✔️ |
| LineString | ✔️ | ✔️ |
| Polygon | ✔️ | ✔️ |
| MultiPoint | ✔️ | ✔️ |
| MultiLineString | ✔️ | ✔️ |
| MultiPolygon | ✔️ | ✔️ |
| GeometryCollection | ✔️ | ✔️ |
| CircularString | ❌ | ✔️ |
| CompoundCurve | ❌ | ✔️ |
| CurvePolygon | ❌ | ✔️ |
| MultiCurve | ❌ | ✔️ |
| MultiSurface | ❌ | ✔️ |
| Curve | ❌ | ✔️ |
| Surface | ❌ | ✔️ |
| PolyhedralSurface | ✔️ | ✔️ |
| TIN | ✔️ | ✔️ |
| Triangle | ✔️ | ✔️ |
| Circle | ❌ | ❌ |
| GeodesicString | ❌ | ❌ |
| EllipticalCurve | ❌ | ❌ |
| NurbsCurve | ❌ | ❌ |
| Clothoid | ❌ | ❌ |
| SpiralCurve | ❌ | ❌ |
| CompoundSurface | ❌ | ❌ |
| BrepSolid | ❌ | ❌ |
| AffinePlacement | ❌ | ❌ |
The ST_Geometry type is the maximal supertype of the geometry type hierarchy. The ST_Geometry type is not instantiable. The instantiable subtypes of the ST_Geometry type are 0-dimensional geometry, 1- dimensional geometry, and 2-dimensional geometry types that exist in two-dimensional coordinate space (R2), three-dimensional coordinate space (R3) or four-dimensional coordinate space (R4). ST_Geometry values in R2 have points with x and y coordinate values. ST_Geometry values in R3 have points exclusively with x y and z coordinate values or exclusively with x, y and m coordinate values. ST_Geometry values in R4 have points with x, y, z and m coordinate values.
ST_Geometry, ST_Curve, and ST_Surface are not instantiable types. No constructor functions are defined for these types.
The following geometry types are defined: ST_Geometry, ST_Point, ST_Curve, ST_LineString, ST_CircularString, ST_Circle, ST_GeodesicString, ST_EllipticalCurve, ST_NURBSCurve, ST_Clothoid, ST_SpiralCurve, ST_CompoundCurve, ST_Surface, ST_CurvePolygon, ST_Polygon, ST_Triangle, ST_PolyhdrlSurface, ST_TIN,ST_GeomCollection, ST_MultiPoint, ST_MultiCurve, ST_MultiLineString, ST_MultiSurface, and ST_MultiPolygon.
ST_Point, ST_LineString, ST_CircularString, ST_Circle, ST_GeodesicString, ST_EllipticalCurve, ST_NURBSCurve, ST_Clothoid, ST_SpiralCurve, ST_CompoundCurve, ST_CurvePolygon, ST_Polygon, ST_Triangle, ST_PolyhdrlSurface, ST_TIN, ST_GeomCollection, ST_MultiPoint, ST_MultiCurve, ST_MultiLineString, ST_MultiSurface, and ST_MultiPolygon are instantiable and have constructor functions.
ST_TINElement is a support type. It is used by the ST_TIN geometry type to specify information about the TIN surface, other than just its triangles. Each ST_TINElement contains an ST_Geometry.
The z coordinate is a coordinate of a point typically, but not necessarily, considered to represent altitude. The m coordinate is a coordinate of a point representing arbitrary measurement. ST_Geometry values that have the m coordinate value are key to supporting linear networking applications such as street routing, transportation, pipeline, telecommunications network, and utility management.
| Type | 2D | Z | M | ZM |
|---|---|---|---|---|
| Geometry | 0000 | 1000 | 2000 | 3000 |
| Point | 0001 | 1001 | 2001 | 3001 |
| LineString | 0002 | 1002 | 2002 | 3002 |
| Polygon | 0003 | 1003 | 2003 | 3003 |
| MultiPoint | 0004 | 1004 | 2004 | 3004 |
| MultiLineString | 0005 | 1005 | 2005 | 3005 |
| MultiPolygon | 0006 | 1006 | 2006 | 3006 |
| GeometryCollection | 0007 | 1007 | 2007 | 3007 |
| CircularString | 0008 | 1008 | 2008 | 3008 |
| CompoundCurve | 0009 | 1009 | 2009 | 3009 |
| CurvePolygon | 0010 | 1010 | 2010 | 3010 |
| MultiCurve | 0011 | 1011 | 2011 | 3011 |
| MultiSurface | 0012 | 1012 | 2012 | 3012 |
| Curve | 0013 | 1013 | 2013 | 3013 |
| Surface | 0014 | 1014 | 2014 | 3014 |
| PolyhedralSurface | 0015 | 1015 | 2015 | 3015 |
| TIN | 0016 | 1016 | 2016 | 3016 |
| Triangle | 0017 | 1017 | 2017 | 3017 |
| Circle | 0018 | 1018 | 2018 | 3018 |
| GeodesicString | 0019 | 1019 | 2019 | 3019 |
| EllipticalCurve | 0020 | 1020 | 2020 | 3020 |
| NurbsCurve | 0021 | 1021 | 2021 | 3021 |
| Clothoid | 0022 | 1022 | 2022 | 3022 |
| SpiralCurve | 0023 | 1023 | 2023 | 3023 |
| CompoundSurface | 0024 | 1024 | 2024 | 3024 |
| BrepSolid | 1025 | |||
| AffinePlacement | 102 | 1102 |
| Type | 2D | Z | M | ZM |
|---|---|---|---|---|
| OGC 2D | 0 | 128 | 64 | 192 |
| Type | 2D | Z | M | ZM | SRID |
|---|---|---|---|---|---|
| OGC 2D | +32 | +32 | +32 | +32 | Uint32 |
Endianness: wiki
Type, Dim + PG Dim: Data field according to standard Uint32. For marking type and dimension ISO/IEC 13249-3, Uint16 is sufficient. The last byte of the field (Uint32) contains the marking dimension PostGIS.
| Endianness | Type, Dim + PG Dim | X Y Z M |
|---|---|---|
| Uint8 | Uint16 + Uint8 | Float64 |
| Endianness | Type, Dim + PG Dim | Amount Points | X Y Z M |
|---|---|---|---|
| Uint8 | Uint16 + Uint8 | Uint32 | Float64 |
| Endianness | Type, Dim + PG Dim | Amount LinearRing | Amount Points | X Y Z M |
|---|---|---|---|---|
| Uint8 | Uint16 + Uint8 | Uint32 | Uint32 | Float64 |
MultiPoint, MultiLineString, MultiPolygon, GeometryCollection, CompoundCurve, CurvePolygon, MultiCurve, MultiSurface, PolyhedralSurface, TIN
| Endianness | Type, Dim + PG Dim | Amount | Geometry |
|---|---|---|---|
| Uint8 | Uint16 + Uint8 | Uint32 | Including endianness, type, ... |