Funzioni di gestione delle tabelle |
AddGeometryColumn
3d
Aggiunge una colonna geometrica a una tabella esistente.
- table_name, column_name, srid, type, dimension, use_typmod=true
- schema_name, table_name, column_name, srid, type, dimension, use_typmod=true
- catalog_name, schema_name, table_name, column_name, srid, type, dimension, use_typmod=true
|
DropGeometryColumn
3d
Rimuove una colonna geometry da una tabella spaziale
- table_name, column_name
- schema_name, table_name, column_name
- catalog_name, schema_name, table_name, column_name
|
DropGeometryTable
Rimuove una tabella e tutte le sue referenze da geometry_columns
- table_name
- schema_name, table_name
- catalog_name, schema_name, table_name
|
Find_SRID
(a_schema_name, a_table_name, a_geomfield_name)
Restituisce lo SRID di una colonna di tipo geometrico. |
Populate_Geometry_Columns
Garantisce che le colonne di tipo geometrico siano definite con dei modificatori di tipo o abbiano dei vincoli spaziali appropriati.
- use_typmod=true
- relation_oid, use_typmod=true
|
UpdateGeometrySRID
3d
Aggiorna lo SRID e di tutte le geometrie nella colonna specificata e i metadati di tabella.
- table_name, column_name, srid
- schema_name, table_name, column_name, srid
- catalog_name, schema_name, table_name, column_name, srid
|
Costruttori geometrici. |
ST_Collect
3d
Creates a GeometryCollection or Multi* geometry from a set of geometries.
- g1, g2
- g1_array
- g1field agg
|
ST_LineFromMultiPoint
3d
(aMultiPoint)
Crea una LineString da una geometria MultiPoint. |
ST_MakeEnvelope
(xmin, ymin, xmax, ymax, srid=unknown)
Creates a rectangular Polygon from minimum and maximum coordinates. |
ST_MakeLine
3d
Crea una LineString da una geometria Point, MultiPoint o un set di LineString
- geom1, geom2
- geoms_array
- geoms agg
|
ST_MakePoint
3d
Creates a 2D, 3DZ or 4D Point.
- x, y
- x, y, z
- x, y, z, m
|
ST_MakePointM
(x, y, m)
Creates a Point from X, Y and M values. |
ST_MakePolygon
3d
Creates a Polygon from a shell and optional list of holes.
- linestring
- outerlinestring, interiorlinestrings
|
ST_Point
mm
Creates a Point with X, Y and SRID values.
- x, y
- x, y, srid=unknown
|
ST_PointZ
(x, y, z, srid=unknown)
Creates a Point with X, Y, Z and SRID values. |
ST_PointM
(x, y, m, srid=unknown)
Creates a Point with X, Y, M and SRID values. |
ST_PointZM
(x, y, z, m, srid=unknown)
Creates a Point with X, Y, Z, M and SRID values. |
ST_Polygon
mm
3d
(lineString, srid)
Creates a Polygon from a LineString with a specified SRID. |
ST_TileEnvelope
(tileZoom, tileX, tileY, bounds=SRID=3857;LINESTRING(-20037508.342789 -20037508.342789,20037508.342789 20037508.342789), margin=0.0)
Creates a rectangular Polygon in Web Mercator (SRID:3857) using the XYZ tile system. |
ST_HexagonGrid
(size, bounds)
Returns a set of hexagons and cell indices that completely cover the bounds of the geometry argument. |
ST_Hexagon
(size, cell_i, cell_j, origin)
Returns a single hexagon, using the provided edge size and cell coordinate within the hexagon grid space. |
ST_SquareGrid
(size, bounds)
Returns a set of grid squares and cell indices that completely cover the bounds of the geometry argument. |
ST_Square
(size, cell_i, cell_j, origin)
Returns a single square, using the provided edge size and cell coordinate within the square grid space. |
ST_Letters
( letters, font)
Returns the input letters rendered as geometry with a default start position at the origin and default text height of 100. |
Accessori alla geometria |
GeometryType
3d
(geomA)
Restituisce il tipo di geometria come testo. |
ST_Boundary
mm
3d
(geomA)
Restituisce il confine di una geometria. |
ST_BoundingDiagonal
3d
(geom, fits=false)
Restituisce la diagonale del rettangolo di confine di una geometria. |
ST_CoordDim
mm
3d
(geomA)
Restituisce la dimensione delle coordinate di una geometrie. |
ST_Dimension
mm
(g)
Restituisce la dimensione topologica di una geometria. |
ST_Dump
3d
(g1)
Returns a set of geometry_dump rows for the components of a geometry. |
ST_DumpPoints
3d
(geom)
Returns a set of geometry_dump rows for the coordinates in a geometry. |
ST_DumpSegments
3d
(geom)
Returns a set of geometry_dump rows for the segments in a geometry. |
ST_DumpRings
3d
(a_polygon)
Returns a set of geometry_dump rows for the exterior and interior rings of a Polygon. |
ST_EndPoint
mm
3d
(g)
Returns the last point of a LineString or CircularLineString. |
ST_Envelope
mm
(g1)
Returns a geometry representing the bounding box of a geometry. |
ST_ExteriorRing
mm
3d
(a_polygon)
Returns a LineString representing the exterior ring of a Polygon. |
ST_GeometryN
mm
3d
(geomA, n)
Restituisce il tipo di geometria per il valore ST_Geometry. |
ST_GeometryType
mm
3d
(g1)
Restituisce il tipo di geometria per il valore ST_Geometry. |
ST_HasArc
3d
(geomA)
Tests if a geometry contains a circular arc |
ST_InteriorRingN
mm
3d
(a_polygon, n)
Returns the Nth interior ring (hole) of a Polygon. |
ST_NumCurves
mm
3d
(a_compoundcurve)
Return the number of component curves in a CompoundCurve. |
ST_CurveN
mm
3d
(a_compoundcurve, index)
Returns the Nth component curve geometry of a CompoundCurve. |
ST_IsClosed
mm
3d
(g)
Restituisce TRUE se il punto iniziale e quello finale di LINESTRING coincidono. Per le superfici poliedriche indica una superficie chiusa (volumetrica). |
ST_IsCollection
3d
(g)
Restituisce TRUE se la geometria è una geometrycollection, un poligono o un punto vuoto, ecc. |
ST_IsEmpty
mm
(geomA)
Tests if a geometry is empty. |
ST_IsPolygonCCW
3d
(geom)
Tests if Polygons have exterior rings oriented counter-clockwise and interior rings oriented clockwise. |
ST_IsPolygonCW
3d
(geom)
Tests if Polygons have exterior rings oriented clockwise and interior rings oriented counter-clockwise. |
ST_IsRing
mm
(g)
Tests if a LineString is closed and simple. |
ST_IsSimple
mm
3d
(geomA)
Tests if a geometry has no points of self-intersection or self-tangency. |
ST_M
mm
3d
(a_point)
Returns the M coordinate of a Point. |
ST_MemSize
3d
(geomA)
Restituisce il tipo di geometria per il valore ST_Geometry. |
ST_NDims
3d
(g1)
Restituisce la dimensione delle coordinate di una geometria. |
ST_NPoints
3d
(g1)
Returns the number of points (vertices) in a geometry. |
ST_NRings
3d
(geomA)
Returns the number of rings in a polygonal geometry. |
ST_NumGeometries
mm
3d
(geom)
Restituisce TRUE se la geometria è una geometrycollection, un poligono o un punto vuoto, ecc. |
ST_NumInteriorRings
mm
(a_polygon)
Returns the number of interior rings (holes) of a Polygon. |
ST_NumInteriorRing
(a_polygon)
Returns the number of interior rings (holes) of a Polygon. Aias for ST_NumInteriorRings |
ST_NumPatches
mm
3d
(g1)
Return the number of faces on a Polyhedral Surface. Will return null for non-polyhedral geometries. |
ST_NumPoints
mm
(g1)
Returns the number of points in a LineString or CircularString. |
ST_PatchN
mm
3d
(geomA, n)
Restituisce il tipo di geometria per il valore ST_Geometry. |
ST_PointN
mm
3d
(a_linestring, n)
Returns the Nth point in the first LineString or circular LineString in a geometry. |
ST_Points
3d
(geom)
Restituisce un MultiPoint contenente le coordinate di una geometria. |
ST_StartPoint
mm
3d
(geomA)
Returns the first point of a LineString. |
ST_Summary
G
Returns a text summary of the contents of a geometry.
- g
- g
|
ST_X
mm
3d
(a_point)
Returns the X coordinate of a Point. |
ST_Y
mm
3d
(a_point)
Returns the Y coordinate of a Point. |
ST_Z
mm
3d
(a_point)
Returns the Z coordinate of a Point. |
ST_Zmflag
3d
(geomA)
Restituisce un codice indicante le dimensioni ZM di una geometria. |
ST_HasZ
1
3d
(geom)
Checks if a geometry has a Z dimension. |
ST_HasM
1
3d
(geom)
Checks if a geometry has an M (measure) dimension. |
Editori di geometria |
ST_AddPoint
3d
Aggiunge un punto a una stringa di linee.
- linestring, point
- linestring, point, position = -1
|
ST_CollectionExtract
Given a geometry collection, returns a multi-geometry containing only elements of a specified type.
- collection
- collection, type
|
ST_CollectionHomogenize
(collection)
Returns the simplest representation of a geometry collection. |
ST_CurveToLine
mm
3d
(curveGeom, tolerance, tolerance_type, flags)
Converts a geometry containing curves to a linear geometry. |
ST_Scroll
3d
(linestring, point)
Change start point of a closed LineString. |
ST_FlipCoordinates
3d
(geom)
Returns a version of a geometry with X and Y axis flipped. |
ST_Force2D
3d
(geomA)
Force the geometries into a "2-dimensional mode". |
ST_Force3D
3d
(geomA, Zvalue = 0.0)
Force the geometries into XYZ mode. This is an alias for ST_Force3DZ. |
ST_Force3DZ
3d
(geomA, Zvalue = 0.0)
Force the geometries into XYZ mode. |
ST_Force3DM
(geomA, Mvalue = 0.0)
Force the geometries into XYM mode. |
ST_Force4D
3d
(geomA, Zvalue = 0.0, Mvalue = 0.0)
Force the geometries into XYZM mode. |
ST_ForceCollection
3d
(geomA)
Convert the geometry into a GEOMETRYCOLLECTION. |
ST_ForceCurve
3d
(g)
Upcast a geometry into its curved type, if applicable. |
ST_ForcePolygonCCW
3d
(geom)
Orients all exterior rings counter-clockwise and all interior rings clockwise. |
ST_ForcePolygonCW
3d
(geom)
Orients all exterior rings clockwise and all interior rings counter-clockwise. |
ST_ForceSFS
3d
Force the geometries to use SFS 1.1 geometry types only.
- geomA
- geomA, version
|
ST_ForceRHR
3d
(g)
Force the orientation of the vertices in a polygon to follow the Right-Hand-Rule. |
ST_LineExtend
(line, distance_forward, distance_backward=0.0)
Returns a line extended forwards and backwards by specified distances. |
ST_LineToCurve
3d
(geomANoncircular)
Converts a linear geometry to a curved geometry. |
ST_Multi
(geom)
Return the geometry as a MULTI* geometry. |
ST_Normalize
(geom)
Return the geometry in its canonical form. |
ST_Project
G
Returns a point projected from a start point by a distance and bearing (azimuth).
- g1, distance, azimuth
- g1, g2, distance
- g1, distance, azimuth
- g1, g2, distance
|
ST_QuantizeCoordinates
(g, prec_x, prec_y, prec_z, prec_m)
Sets least significant bits of coordinates to zero |
ST_RemovePoint
3d
(linestring, offset)
Remove a point from a linestring. |
ST_RemoveRepeatedPoints
3d
(geom, tolerance)
Returns a version of a geometry with duplicate points removed. |
ST_RemoveIrrelevantPointsForView
1
(geom, bounds, cartesian_hint = false)
Removes points that are irrelevant for rendering a specific rectangluar view of a geometry. |
ST_RemoveSmallParts
1
(geom, minSizeX, minSizeY)
Removes small parts (polygon rings or linestrings) of a geometry. |
ST_Reverse
3d
(g1)
Return the geometry with vertex order reversed. |
ST_Segmentize
G
Returns a modified geometry/geography having no segment longer than a given distance.
- geom, max_segment_length
- geog, max_segment_length
|
ST_SetPoint
3d
(linestring, zerobasedposition, point)
Replace point of a linestring with a given point. |
ST_ShiftLongitude
3d
(geom)
Shifts the longitude coordinates of a geometry between -180..180 and 0..360. |
ST_WrapX
3d
(geom, wrap, move)
Wrap a geometry around an X value. |
ST_SnapToGrid
3d
Snap all points of the input geometry to a regular grid.
- geomA, originX, originY, sizeX, sizeY
- geomA, sizeX, sizeY
- geomA, size
- geomA, pointOrigin, sizeX, sizeY, sizeZ, sizeM
|
ST_Snap
(input, reference, tolerance)
Snap segments and vertices of input geometry to vertices of a reference geometry. |
ST_SwapOrdinates
3d
(geom, ords)
Returns a version of the given geometry with given ordinate values swapped. |
Spatial Reference System Functions |
ST_InverseTransformPipeline
(geom, pipeline, to_srid)
Return a new geometry with coordinates transformed to a different spatial reference system using the inverse of a defined coordinate transformation pipeline. |
ST_SetSRID
(geom, srid)
Set the SRID on a geometry. |
ST_SRID
mm
(g1)
Returns the spatial reference identifier for a geometry. |
ST_Transform
mm
Return a new geometry with coordinates transformed to a different spatial reference system.
- g1, srid
- geom, to_proj
- geom, from_proj, to_proj
- geom, from_proj, to_srid
|
ST_TransformPipeline
(g1, pipeline, to_srid)
Return a new geometry with coordinates transformed to a different spatial reference system using a defined coordinate transformation pipeline. |
postgis_srs_codes
(auth_name)
Return the list of SRS codes associated with the given authority. |
postgis_srs
(auth_name, auth_srid)
Return a metadata record for the requested authority and srid. |
postgis_srs_all
()
Return metadata records for every spatial reference system in the underlying Proj database. |
postgis_srs_search
(bounds, auth_name=EPSG)
Return metadata records for projected coordinate systems that have areas of usage that fully contain the bounds parameter. |
Ingresso geometria |
ST_BdPolyFromText
(WKT, srid)
Costruisce un poligono an partire da una collezione arbitraria di linee chiuse in forma di multilinee rappresentate come testo Well-Known |
ST_BdMPolyFromText
(WKT, srid)
Costruisce un MultiPolygon a partire da una collezione arbitraria di linee chiuse sotto forma di MultiLineString in formato Well-Known-Text. |
ST_GeogFromText
G
(EWKT)
Ritorna un valore geography sotto forma di Well-Know-Text (WKT) oppure di Extended-Well-Know-Text (EWKT) |
ST_GeographyFromText
G
(EWKT)
Ritorna un valore geography sotto forma di Well-Know-Text (WKT) oppure di Extended-Well-Know-Text (EWKT) |
ST_GeomCollFromText
mm
Crea una collezione Geometria dalla collezione WKT con il SRID indicato. Se SRID non è indicato, il valore predefinito è 0.
- WKT, srid
- WKT
|
ST_GeomFromEWKT
3d
(EWKT)
Ritorna un valore ST_Geometry a partire da una rappresentazione Extended Well-Known Text (EWKT). |
ST_GeomFromMARC21
(marcxml)
Prende in input i dati geografici MARC21/XML e restituisce un oggetto geometrico PostGIS. |
ST_GeometryFromText
mm
Restituisce un valore ST_Geometry a partire da Well-Known-Text (WKT). È un alias per ST_GeomFromText
- WKT
- WKT, srid
|
ST_GeomFromText
mm
Restituisce un valore ST_Geometry a partire da una rappresentazione Well-Known-Text (WKT)
- WKT
- WKT, srid
|
ST_LineFromText
mm
Crea una geometria dalla rappresentazione WKT con il SRID indicato. Se SRID non viene indicato, il valore predefinito è 0.
- WKT
- WKT, srid
|
ST_MLineFromText
mm
Restituisce un valore ST_MultiLineString specificato dalla rappresentazione WKT.
- WKT, srid
- WKT
|
ST_MPointFromText
mm
Crea una geometria da WKT con il SRID indicato. Se SRID non viene indicato, il valore predefinito è 0.
- WKT, srid
- WKT
|
ST_MPolyFromText
mm
Crea una geometria multipoligono da WKT con il SRID indicato. Se SRID non è indicato, l'impostazione predefinita è 0.
- WKT, srid
- WKT
|
ST_PointFromText
mm
Crea una geometria di punti da WKT con il SRID indicato. Se SRID non è indicato, il valore predefinito è sconosciuto.
- WKT
- WKT, srid
|
ST_PolygonFromText
mm
Crea una geometria da WKT con il SRID indicato. Se SRID non viene indicato, il valore predefinito è 0.
- WKT
- WKT, srid
|
ST_WKTToSQL
mm
(WKT)
Restituisce un valore ST_Geometry a partire da Well-Known-Text (WKT). È un alias per ST_GeomFromText |
ST_GeogFromWKB
G
(wkb)
Crea un oggetto geography a partire da una geometria in Well-Known Binary (WKB) oppure Extended Well-Known Binary (EWKB). |
ST_GeomFromEWKB
3d
(EWKB)
Ritorna un valore ST_Geometry a partire da Extended Well-Known Binary (EWKB). |
ST_GeomFromWKB
mm
Crea un'istanza di geometria da una rappresentazione geometrica Well-Known Binary (WKB) e da un SRID opzionale.
- geom
- geom, srid
|
ST_LineFromWKB
mm
Crea un LINESTRING da WKB con il SRID indicato
- WKB
- WKB, srid
|
ST_LinestringFromWKB
mm
Crea una geometria da WKB con il SRID indicato.
- WKB
- WKB, srid
|
ST_PointFromWKB
mm
3d
Crea una geometria da WKB con il SRID indicato
- geom
- geom, srid
|
ST_WKBToSQL
mm
(WKB)
Restituisce un valore ST_Geometry specificato dalla rappresentazione Well-Known Binary (WKB). Si tratta di un nome alias per ST_GeomFromWKB che non accetta srid |
ST_Box2dFromGeoHash
(geohash, precision=full_precision_of_geohash)
Restituisce un BOX2D da una stringa GeoHash. |
ST_GeomFromGeoHash
(geohash, precision=full_precision_of_geohash)
Restituisce una geometria da una stringa GeoHash. |
ST_GeomFromGML
3d
Accetta una geometria in formato GML come input e restituisce un oggetto PostGIS geometry
- geomgml
- geomgml, srid
|
ST_GeomFromGeoJSON
3d
Accetta come input la rappresentazione geojson di una geometria e restituisce una geometria PostGIS
- geomjson
- geomjson
- geomjson
|
ST_GeomFromKML
3d
(geomkml)
Accetta come input una geometria in formato KML e restituisce una geometria PostGIS. |
ST_GeomFromTWKB
(twkb)
Crea un'istanza di geometria da una rappresentazione geometrica TWKB ("Tiny Well Known Binary"). |
ST_GMLToSQL
mm
Restituisce un valore ST_Geometry a partire da una rappresentazione GML. Questo è solo un alias per la funzione ST_GeomFromGML.
- geomgml
- geomgml, srid
|
ST_LineFromEncodedPolyline
(polyline, precision=5)
Crea una stringa di linee da una polilinea codificata. |
ST_PointFromGeoHash
(geohash, precision=full_precision_of_geohash)
Restituisce un punto da una stringa GeoHash. |
ST_FromFlatGeobufToTable
(schemaname, tablename, FlatGeobuf input data)
Crea una tabella basata sulla struttura dei dati di FlatGeobuf. |
ST_FromFlatGeobuf
(Table reference, FlatGeobuf input data)
Legge i dati di FlatGeobuf. |
Geometry Output |
ST_AsEWKT
G
3d
Ritorna la rappresentazione Well-Known Text (WKT) della geometria con incluso lo SRID.
- g1
- g1, maxdecimaldigits=15
- g1
- g1, maxdecimaldigits=15
|
ST_AsText
mm
G
Return the Well-Known Text (WKT) representation of the geometry/geography without SRID metadata.
- g1
- g1, maxdecimaldigits = 15
- g1
- g1, maxdecimaldigits = 15
|
ST_AsBinary
mm
G
3d
Return the OGC/ISO Well-Known Binary (WKB) representation of the geometry/geography without SRID meta data.
- g1
- g1, NDR_or_XDR
- g1
- g1, NDR_or_XDR
|
ST_AsEWKB
3d
Return the Extended Well-Known Binary (EWKB) representation of the geometry with SRID meta data.
- g1
- g1, NDR_or_XDR
|
ST_AsHEXEWKB
3d
Returns a Geometry in HEXEWKB format (as text) using either little-endian (NDR) or big-endian (XDR) encoding.
- g1, NDRorXDR
- g1
|
ST_AsEncodedPolyline
(geom, precision=5)
Returns an Encoded Polyline from a LineString geometry. |
ST_AsFlatGeobuf
Return a FlatGeobuf representation of a set of rows.
- row agg
- row, index
- row, index, geom_name
|
ST_AsGeobuf
Return a Geobuf representation of a set of rows.
- row agg
- row, geom_name
|
ST_AsGeoJSON
G
3d
Return a geometry or feature in GeoJSON format.
- feature, geom_column="", maxdecimaldigits=9, pretty_bool=false, id_column=''
- geom, maxdecimaldigits=9, options=8
- geog, maxdecimaldigits=9, options=0
|
ST_AsGML
mm
G
3d
Return the geometry as a GML version 2 or 3 element.
- geom, maxdecimaldigits=15, options=0
- geog, maxdecimaldigits=15, options=0, nprefix=null, id=null
- version, geom, maxdecimaldigits=15, options=0, nprefix=null, id=null
- version, geog, maxdecimaldigits=15, options=0, nprefix=null, id=null
|
ST_AsKML
G
3d
Return the geometry as a KML element.
- geom, maxdecimaldigits=15, nprefix=NULL
- geog, maxdecimaldigits=15, nprefix=NULL
|
ST_AsLatLonText
(pt, format='')
Return the Degrees, Minutes, Seconds representation of the given point. |
ST_AsMARC21
(geom, format='hdddmmss')
Returns geometry as a MARC21/XML record with a geographic datafield (034). |
ST_AsMVTGeom
(geom, bounds, extent=4096, buffer=256, clip_geom=true)
Transforms a geometry into the coordinate space of a MVT tile. |
ST_AsMVT
Aggregate function returning a MVT representation of a set of rows.
- row agg
- row, name
- row, name, extent
- row, name, extent, geom_name
- row, name, extent, geom_name, feature_id_name
|
ST_AsSVG
G
Returns SVG path data for a geometry.
- geom, rel=0, maxdecimaldigits=15
- geog, rel=0, maxdecimaldigits=15
|
ST_AsTWKB
Returns the geometry as TWKB, aka "Tiny Well-Known Binary"
- geom, prec=0, prec_z=0, prec_m=0, with_sizes=false, with_boxes=false
- geom, ids, prec=0, prec_z=0, prec_m=0, with_sizes=false, with_boxes=false
|
ST_AsX3D
3d
(g1, maxdecimaldigits=15, options=0)
Returns a Geometry in X3D xml node element format: ISO-IEC-19776-1.2-X3DEncodings-XML |
ST_GeoHash
(geom, maxchars=full_precision_of_point)
Return a GeoHash representation of the geometry. |
Operatori |
&&
G
Returns TRUE if A's 2D bounding box intersects B's 2D bounding box.
- A, B
- A, B
|
&&(geometry,box2df)
(A, B)
Returns TRUE if a geometry's (cached) 2D bounding box intersects a 2D float precision bounding box (BOX2DF). |
&&(box2df,geometry)
(A, B)
Returns TRUE if a 2D float precision bounding box (BOX2DF) intersects a geometry's (cached) 2D bounding box. |
&&(box2df,box2df)
(A, B)
Returns TRUE if two 2D float precision bounding boxes (BOX2DF) intersect each other. |
&&&
3d
(A, B)
Returns TRUE if A's n-D bounding box intersects B's n-D bounding box. |
&&&(geometry,gidx)
3d
(A, B)
Returns TRUE if a geometry's (cached) n-D bounding box intersects a n-D float precision bounding box (GIDX). |
&&&(gidx,geometry)
3d
(A, B)
Returns TRUE if a n-D float precision bounding box (GIDX) intersects a geometry's (cached) n-D bounding box. |
&&&(gidx,gidx)
3d
(A, B)
Returns TRUE if two n-D float precision bounding boxes (GIDX) intersect each other. |
&<
(A, B)
Returns TRUE if A's bounding box overlaps or is to the left of B's. |
&<|
(A, B)
Returns TRUE if A's bounding box overlaps or is below B's. |
&>
(A, B)
Returns TRUE if A' bounding box overlaps or is to the right of B's. |
<<
(A, B)
Returns TRUE if A's bounding box is strictly to the left of B's. |
<<|
(A, B)
Returns TRUE if A's bounding box is strictly below B's. |
=
G
Returns TRUE if the coordinates and coordinate order geometry/geography A are the same as the coordinates and coordinate order of geometry/geography B.
- A, B
- A, B
|
>>
(A, B)
Returns TRUE if A's bounding box is strictly to the right of B's. |
@
(A, B)
Returns TRUE if A's bounding box is contained by B's. |
@(geometry,box2df)
(A, B)
Returns TRUE if a geometry's 2D bounding box is contained into a 2D float precision bounding box (BOX2DF). |
@(box2df,geometry)
(A, B)
Returns TRUE if a 2D float precision bounding box (BOX2DF) is contained into a geometry's 2D bounding box. |
@(box2df,box2df)
(A, B)
Returns TRUE if a 2D float precision bounding box (BOX2DF) is contained into another 2D float precision bounding box. |
|&>
(A, B)
Returns TRUE if A's bounding box overlaps or is above B's. |
|>>
(A, B)
Returns TRUE if A's bounding box is strictly above B's. |
~
(A, B)
Returns TRUE if A's bounding box contains B's. |
~(geometry,box2df)
(A, B)
Returns TRUE if a geometry's 2D bonding box contains a 2D float precision bounding box (GIDX). |
~(box2df,geometry)
(A, B)
Returns TRUE if a 2D float precision bounding box (BOX2DF) contains a geometry's 2D bonding box. |
~(box2df,box2df)
(A, B)
Returns TRUE if a 2D float precision bounding box (BOX2DF) contains another 2D float precision bounding box (BOX2DF). |
~=
(A, B)
Returns TRUE if A's bounding box is the same as B's. |
<->
G
Returns the 2D distance between A and B.
- A, B
- A, B
|
|=|
(A, B)
Returns the distance between A and B trajectories at their closest point of approach. |
<#>
(A, B)
Returns the 2D distance between A and B bounding boxes. |
<<->>
(A, B)
Returns the n-D distance between the A and B geometries or bounding boxes |
Relazioni Spaziali |
ST_3DIntersects
mm
3d
(geomA, geomB)
Tests if two geometries spatially intersect in 3D - only for points, linestrings, polygons, polyhedral surface (area) |
ST_Contains
mm
(geomA, geomB)
Tests if every point of B lies in A, and their interiors have a point in common |
ST_ContainsProperly
(geomA, geomB)
Tests if every point of B lies in the interior of A |
ST_CoveredBy
G
Tests if every point of A lies in B
- geomA, geomB
- geogA, geogB
|
ST_Covers
G
Tests if every point of B lies in A
- geomA, geomB
- geogpolyA, geogpointB
|
ST_Crosses
mm
(g1, g2)
Tests if two geometries have some, but not all, interior points in common |
ST_Disjoint
mm
(A, B)
Tests if two geometries have no points in common |
ST_Equals
mm
(A, B)
Tests if two geometries include the same set of points |
ST_Intersects
mm
G
Tests if two geometries intersect (they have at least one point in common)
- geomA, geomB
- geogA, geogB
|
ST_LineCrossingDirection
(linestringA, linestringB)
Returns a number indicating the crossing behavior of two LineStrings |
ST_OrderingEquals
mm
(A, B)
Tests if two geometries represent the same geometry and have points in the same directional order |
ST_Overlaps
mm
(A, B)
Tests if two geometries have the same dimension and intersect, but each has at least one point not in the other |
ST_Relate
mm
Tests if two geometries have a topological relationship matching an Intersection Matrix pattern, or computes their Intersection Matrix
- geomA, geomB, intersectionMatrixPattern
- geomA, geomB
- geomA, geomB, boundaryNodeRule
|
ST_RelateMatch
(intersectionMatrix, intersectionMatrixPattern)
Tests if a DE-9IM Intersection Matrix matches an Intersection Matrix pattern |
ST_Touches
mm
(A, B)
Tests if two geometries have at least one point in common, but their interiors do not intersect |
ST_Within
mm
(A, B)
Tests if every point of A lies in B, and their interiors have a point in common |
ST_3DDWithin
mm
3d
(g1, g2, distance_of_srid)
Tests if two 3D geometries are within a given 3D distance |
ST_3DDFullyWithin
3d
(g1, g2, distance)
Tests if two 3D geometries are entirely within a given 3D distance |
ST_DFullyWithin
(g1, g2, distance)
Tests if a geometry is entirely inside a distance of another |
ST_DWithin
G
Tests if two geometries are within a given distance
- g1, g2, distance_of_srid
- gg1, gg2, distance_meters, use_spheroid = true
|
ST_PointInsideCircle
(a_point, center_x, center_y, radius)
Tests if a point geometry is inside a circle defined by a center and radius |
Measurement Functions |
ST_Area
mm
G
Returns the area of a polygonal geometry.
- g1
- geog, use_spheroid = true
|
ST_Azimuth
G
Returns the north-based azimuth of a line between two points.
- origin, target
- origin, target
|
ST_Angle
Returns the angle between two vectors defined by 3 or 4 points, or 2 lines.
- point1, point2, point3, point4
- line1, line2
|
ST_ClosestPoint
G
Returns the 2D point on g1 that is closest to g2. This is the first point of the shortest line from one geometry to the other.
- geom1, geom2
- geom1, geom2, use_spheroid = true
|
ST_3DClosestPoint
3d
(g1, g2)
Returns the 3D point on g1 that is closest to g2. This is the first point of the 3D shortest line. |
ST_Distance
mm
G
Returns the distance between two geometry or geography values.
- g1, g2
- geog1, geog2, use_spheroid = true
|
ST_3DDistance
mm
3d
(g1, g2)
Returns the 3D cartesian minimum distance (based on spatial ref) between two geometries in projected units. |
ST_DistanceSphere
(geomlonlatA, geomlonlatB, radius=6371008)
Returns minimum distance in meters between two lon/lat geometries using a spherical earth model. |
ST_DistanceSpheroid
(geomlonlatA, geomlonlatB, measurement_spheroid=WGS84)
Returns the minimum distance between two lon/lat geometries using a spheroidal earth model. |
ST_FrechetDistance
(g1, g2, densifyFrac = -1)
Returns the Fréchet distance between two geometries. |
ST_HausdorffDistance
Returns the Hausdorff distance between two geometries.
- g1, g2
- g1, g2, densifyFrac
|
ST_Length
mm
G
Returns the 2D length of a linear geometry.
- a_2dlinestring
- geog, use_spheroid = true
|
ST_Length2D
(a_2dlinestring)
Returns the 2D length of a linear geometry. Alias for ST_Length |
ST_3DLength
mm
3d
(a_3dlinestring)
Returns the 3D length of a linear geometry. |
ST_LengthSpheroid
3d
(a_geometry, a_spheroid)
Returns the 2D or 3D length/perimeter of a lon/lat geometry on a spheroid. |
ST_LongestLine
(g1, g2)
Returns the 2D longest line between two geometries. |
ST_3DLongestLine
3d
(g1, g2)
Returns the 3D longest line between two geometries |
ST_MaxDistance
(g1, g2)
Returns the 2D largest distance between two geometries in projected units. |
ST_3DMaxDistance
3d
(g1, g2)
Returns the 3D cartesian maximum distance (based on spatial ref) between two geometries in projected units. |
ST_MinimumClearance
(g)
Returns the minimum clearance of a geometry, a measure of a geometry's robustness. |
ST_MinimumClearanceLine
(g)
Returns the two-point LineString spanning a geometry's minimum clearance. |
ST_Perimeter
mm
G
Returns the length of the boundary of a polygonal geometry or geography.
- g1
- geog, use_spheroid = true
|
ST_Perimeter2D
(geomA)
Returns the 2D perimeter of a polygonal geometry. Alias for ST_Perimeter. |
ST_3DPerimeter
mm
3d
(geomA)
Returns the 3D perimeter of a polygonal geometry. |
ST_ShortestLine
G
Returns the 2D shortest line between two geometries
- geom1, geom2
- geom1, geom2, use_spheroid = true
|
ST_3DShortestLine
3d
(g1, g2)
Returns the 3D shortest line between two geometries |
Overlay Functions |
ST_ClipByBox2D
(geom, box)
Computes the portion of a geometry falling within a rectangle. |
ST_Difference
mm
g3.9
3d
(geomA, geomB, gridSize = -1)
Computes a geometry representing the part of geometry A that does not intersect geometry B. |
ST_Intersection
mm
G
g3.9
3d
Computes a geometry representing the shared portion of geometries A and B.
- geomA, geomB, gridSize = -1
- geogA, geogB
|
ST_MemUnion
3d
(geomfield)
Aggregate function which unions geometries in a memory-efficent but slower way |
ST_Node
3d
(geom)
Nodes a collection of lines. |
ST_Split
(input, blade)
Returns a collection of geometries created by splitting a geometry by another geometry. |
ST_Subdivide
g3.9
(geom, max_vertices=256, gridSize = -1)
Computes a rectilinear subdivision of a geometry. |
ST_SymDifference
mm
g3.9
3d
(geomA, geomB, gridSize = -1)
Computes a geometry representing the portions of geometries A and B that do not intersect. |
ST_UnaryUnion
g3.9
3d
(geom, gridSize = -1)
Computes the union of the components of a single geometry. |
ST_Union
mm
g3.9
3d
Computes a geometry representing the point-set union of the input geometries.
- g1, g2
- g1, g2, gridSize
- g1_array
- g1field agg
- g1field, gridSize agg
|
Geometry Processing |
ST_Buffer
mm
G
Computes a geometry covering all points within a given distance from a geometry.
- g1, radius_of_buffer, buffer_style_parameters = ''
- g1, radius_of_buffer, num_seg_quarter_circle
- g1, radius_of_buffer, buffer_style_parameters
- g1, radius_of_buffer, num_seg_quarter_circle
|
ST_BuildArea
(geom)
Creates a polygonal geometry formed by the linework of a geometry. |
ST_Centroid
mm
G
Restituisce il centro geometrico di una geometria.
- g1
- g1, use_spheroid = true
|
ST_ChaikinSmoothing
3d
(geom, nIterations = 1, preserveEndPoints = false)
Returns a smoothed version of a geometry, using the Chaikin algorithm |
ST_ConcaveHull
(param_geom, param_pctconvex, param_allow_holes = false)
Computes a possibly concave geometry that contains all input geometry vertices |
ST_ConvexHull
mm
3d
(geomA)
Computes the convex hull of a geometry. |
ST_DelaunayTriangles
3d
(g1, tolerance = 0.0, flags = 0)
Returns the Delaunay triangulation of the vertices of a geometry. |
ST_FilterByM
(geom, min, max = null, returnM = false)
Removes vertices based on their M value |
ST_GeneratePoints
(g, npoints, seed = 0)
Generates a multipoint of random points contained in a Polygon or MultiPolygon. |
ST_GeometricMedian
3d
(geom, tolerance = NULL, max_iter = 10000, fail_if_not_converged = false)
Returns the geometric median of a MultiPoint. |
ST_LineMerge
g3.11
Return the lines formed by sewing together a MultiLineString.
- amultilinestring
- amultilinestring, directed
|
ST_MaximumInscribedCircle
g3.9
(geom)
Computes the largest circle contained within a geometry. |
ST_LargestEmptyCircle
g3.9
(geom, tolerance=0.0, boundary=POINT EMPTY)
Computes the largest circle not overlapping a geometry. |
ST_MinimumBoundingCircle
(geomA, num_segs_per_qt_circ=48)
Returns the smallest circle polygon that contains a geometry. |
ST_MinimumBoundingRadius
(geom)
Restituisce il punto centrale e il raggio del cerchio più piccolo che contiene una geometria. |
ST_OrientedEnvelope
(geom)
Returns a minimum-area rectangle containing a geometry. |
ST_OffsetCurve
(line, signed_distance, style_parameters='')
Returns an offset line at a given distance and side from an input line. |
ST_PointOnSurface
mm
3d
(g1)
Calcola un punto che si trova in un poligono o su una geometria. |
ST_Polygonize
Calcola un insieme di poligoni formati dalle linee di un insieme di geometrie.
- geomfield agg
- geom_array
|
ST_ReducePrecision
g3.9
(g, gridsize)
Restituisce una geometria valida con punti arrotondati alla tolleranza della griglia. |
ST_SharedPaths
(lineal1, lineal2)
Restituisce un insieme contenente i percorsi condivisi dalle due stringhe/multilinghe in ingresso. |
ST_Simplify
Returns a simplified representation of a geometry, using the Douglas-Peucker algorithm.
- geom, tolerance
- geom, tolerance, preserveCollapsed
|
ST_SimplifyPreserveTopology
(geom, tolerance)
Returns a simplified and valid representation of a geometry, using the Douglas-Peucker algorithm. |
ST_SimplifyPolygonHull
g3.11
(param_geom, vertex_fraction, is_outer = true)
Computes a simplifed topology-preserving outer or inner hull of a polygonal geometry. |
ST_SimplifyVW
(geom, tolerance)
Returns a simplified representation of a geometry, using the Visvalingam-Whyatt algorithm |
ST_SetEffectiveArea
(geom, threshold = 0, set_area = 1)
Sets the effective area for each vertex, using the Visvalingam-Whyatt algorithm. |
ST_TriangulatePolygon
g3.11
(geom)
Computes the constrained Delaunay triangulation of polygons |
ST_VoronoiLines
(geom, tolerance = 0.0, extend_to = NULL)
Returns the boundaries of the Voronoi diagram of the vertices of a geometry. |
ST_VoronoiPolygons
(geom, tolerance = 0.0, extend_to = NULL)
Returns the cells of the Voronoi diagram of the vertices of a geometry. |
Affine Transformations |
ST_Affine
3d
Apply a 3D affine transformation to a geometry.
- geomA, a, b, c, d, e, f, g, h, i, xoff, yoff, zoff
- geomA, a, b, d, e, xoff, yoff
|
ST_Rotate
3d
Rotates a geometry about an origin point.
- geomA, rotRadians
- geomA, rotRadians, x0, y0
- geomA, rotRadians, pointOrigin
|
ST_RotateX
3d
(geomA, rotRadians)
Rotates a geometry about the X axis. |
ST_RotateY
3d
(geomA, rotRadians)
Rotates a geometry about the Y axis. |
ST_RotateZ
3d
(geomA, rotRadians)
Rotates a geometry about the Z axis. |
ST_Scale
3d
Scales a geometry by given factors.
- geomA, XFactor, YFactor, ZFactor
- geomA, XFactor, YFactor
- geom, factor
- geom, factor, origin
|
ST_Translate
3d
Translates a geometry by given offsets.
- g1, deltax, deltay
- g1, deltax, deltay, deltaz
|
ST_TransScale
3d
(geomA, deltaX, deltaY, XFactor, YFactor)
Translates and scales a geometry by given offsets and factors. |
Bounding Box Functions |
Box2D
(geom)
Returns a BOX2D representing the 2D extent of a geometry. |
Box3D
3d
(geom)
Returns a BOX3D representing the 3D extent of a geometry. |
ST_EstimatedExtent
Returns the estimated extent of a spatial table.
- schema_name, table_name, geocolumn_name, parent_only
- schema_name, table_name, geocolumn_name
- table_name, geocolumn_name
|
ST_Expand
Returns a bounding box expanded from another bounding box or a geometry.
- geom, units_to_expand
- geom, dx, dy, dz=0, dm=0
- box, units_to_expand
- box, dx, dy
- box, units_to_expand
- box, dx, dy, dz=0
|
ST_Extent
(geomfield)
Funzione aggregata che restituisce il rettangolo di selezione delle geometrie. |
ST_3DExtent
3d
(geomfield)
Funzione aggregata che restituisce il rettangolo di selezione 3D delle geometrie. |
ST_MakeBox2D
(pointLowLeft, pointUpRight)
Crea un BOX2D definito da due geometrie di punti 2D. |
ST_3DMakeBox
(point3DLowLeftBottom, point3DUpRightTop)
Creates a BOX3D defined by two 3D point geometries. |
ST_XMax
3d
(aGeomorBox2DorBox3D)
Returns the X maxima of a 2D or 3D bounding box or a geometry. |
ST_XMin
3d
(aGeomorBox2DorBox3D)
Returns the X minima of a 2D or 3D bounding box or a geometry. |
ST_YMax
3d
(aGeomorBox2DorBox3D)
Returns the Y maxima of a 2D or 3D bounding box or a geometry. |
ST_YMin
3d
(aGeomorBox2DorBox3D)
Returns the Y minima of a 2D or 3D bounding box or a geometry. |
ST_ZMax
3d
(aGeomorBox2DorBox3D)
Returns the Z maxima of a 2D or 3D bounding box or a geometry. |
ST_ZMin
3d
(aGeomorBox2DorBox3D)
Returns the Z minima of a 2D or 3D bounding box or a geometry. |
Sistemi di riferimento lineare |
ST_LineInterpolatePoint
G
3d
Returns a point interpolated along a line at a fractional location.
- a_linestring, a_fraction
- a_linestring, a_fraction, use_spheroid = true
|
ST_3DLineInterpolatePoint
3d
(a_linestring, a_fraction)
Returns a point interpolated along a 3D line at a fractional location. |
ST_LineInterpolatePoints
G
3d
Returns points interpolated along a line at a fractional interval.
- a_linestring, a_fraction, repeat
- a_linestring, a_fraction, use_spheroid = true, repeat = true
|
ST_LineLocatePoint
G
Returns the fractional location of the closest point on a line to a point.
- a_linestring, a_point
- a_linestring, a_point, use_spheroid = true
|
ST_LineSubstring
G
3d
Returns the part of a line between two fractional locations.
- a_linestring, startfraction, endfraction
- a_linestring, startfraction, endfraction
|
ST_LocateAlong
mm
(geom_with_measure, measure, offset = 0)
Returns the point(s) on a geometry that match a measure value. |
ST_LocateBetween
mm
(geom, measure_start, measure_end, offset = 0)
Returns the portions of a geometry that match a measure range. |
ST_LocateBetweenElevations
3d
(geom, elevation_start, elevation_end)
Returns the portions of a geometry that lie in an elevation (Z) range. |
ST_InterpolatePoint
3d
(linear_geom_with_measure, point)
Returns the interpolated measure of a geometry closest to a point. |
ST_AddMeasure
3d
(geom_mline, measure_start, measure_end)
Interpolates measures along a linear geometry. |