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PostGIS Expressions (Geospatial)

PostGIS or Geospacial Expressions are basic level functions that can be applied to geographic data, such as spatial relationships, distance, clustering, and other geometric functions.

1 - Affine Transformations

1.1 - func.ST_TransScale

Translates the geometry using the deltaX and deltaY args, then scales it using the XFactor, YFactor args, working in 2D only

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_TransScale(geometry geomA, float deltaX, float deltaY, float XFactor, float YFactor);

PlaidCloud

func.ST_TransScale(geometry geomA, float deltaX, float deltaY, float XFactor, float YFactor)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.2 - func.ST_Translate

Returns a new geometry whose coordinates are translated delta x,delta y,delta z units

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Translate(geometry g1, float deltax, float deltay);

PlaidCloud

func.ST_Translate(geometry g1, float deltax, float deltay)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.3 - func.ST_Scale

Scales the geometry to a new size by multiplying the ordinates with the corresponding factor parameters

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Scale(geometry geom, geometry factor);

PlaidCloud

func.ST_Scale(geometry geom, geometry factor)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.4 - func.ST_RotateZ

Rotates a geometry geomA - rotRadians about the Z axis

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_RotateZ(geometry geomA, float rotRadians);

PlaidCloud

func.ST_RotateZ(geometry geomA, float rotRadians)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.5 - func.ST_RotateY

Rotates a geometry geomA - rotRadians about the y axis

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_RotateY(geometry geomA, float rotRadians);

PlaidCloud

func.ST_RotateY(geometry geomA, float rotRadians)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.6 - func.ST_RotateX

Rotates a geometry geomA - rotRadians about the X axis

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_RotateX(geometry geomA, float rotRadians);

PlaidCloud

func.ST_RotateX(geometry geomA, float rotRadians)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.7 - func.ST_Rotate

Rotates geometry rotRadians counter-clockwise about the origin point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Rotate(geometry geomA, float rotRadians);

PlaidCloud

func.ST_Rotate(geometry geomA, float rotRadians)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

1.8 - func.ST_Affine

Applies a 3D affine transformation to the geometry to do things like translate, rotate, scale in one step

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Affine(geometry geomA, float a, float b, float d, float e, float xoff, float yoff);

PlaidCloud

func.ST_Affine(geometry geomA, float a, float b, float d, float e, float xoff, float yoff)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

2 - Bounding Box Functions

2.1 - func.ST_ZMin

Returns the Z minima of a 2D or 3D bounding box or a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ZMin(box3d aGeomorBox2DorBox3D);

PlaidCloud

func.ST_ZMin(box3d aGeomorBox2DorBox3D)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.2 - func.ST_ZMax

Returns the Z maxima of a 2D or 3D bounding box or a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ZMax(box3d aGeomorBox2DorBox3D);

PlaidCloud

func.ST_ZMax(box3d aGeomorBox2DorBox3D)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.3 - func.ST_YMin

Returns the Y minima of a 2D or 3D bounding box or a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_YMin(box3d aGeomorBox2DorBox3D);

PlaidCloud

func.ST_YMin(box3d aGeomorBox2DorBox3D)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.4 - func.ST_YMax

Returns the Y maxima of a 2D or 3D bounding box or a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_YMax(box3d aGeomorBox2DorBox3D);

PlaidCloud

func.ST_YMax(box3d aGeomorBox2DorBox3D)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.5 - func.ST_XMin

Returns the X minima of a 2D or 3D bounding box or a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_XMin(box3d aGeomorBox2DorBox3D);

PlaidCloud

func.ST_XMin(box3d aGeomorBox2DorBox3D)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.6 - func.ST_XMax

Returns the X maxima of a 2D or 3D bounding box or a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_XMax(box3d aGeomorBox2DorBox3D);

PlaidCloud

func.ST_XMax(box3d aGeomorBox2DorBox3D)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.7 - func.ST_3DMakeBox

Creates a BOX3D defined by the given two 3D point geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DMakeBox(geometry point3DLowLeftBottom, geometry point3DUpRightTop);

PlaidCloud

func.ST_3DMakeBox(geometry point3DLowLeftBottom, geometry point3DUpRightTop)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.8 - func.ST_MakeBox2D

Creates a BOX2D defined by the given two point geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakeBox2D(geometry pointLowLeft, geometry pointUpRight);

PlaidCloud

func.ST_MakeBox2D(geometry pointLowLeft, geometry pointUpRight)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.9 - func.ST_3DExtent

ST_3DExtent returns a box3d (includes Z coordinate) bounding box that encloses a set of geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DExtent(geometry set geomfield);

PlaidCloud

func.ST_3DExtent(geometry set geomfield)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.10 - func.ST_Extent

ST_Extent returns a bounding box that encloses a set of geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Extent(geometry set geomfield);

PlaidCloud

func.ST_Extent(geometry set geomfield)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.11 - func.ST_Expand

This function returns a bounding box expanded from the bounding box of the input

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Expand(geometry geom, float units_to_expand);

PlaidCloud

func.ST_Expand(geometry geom, float units_to_expand)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.12 - func.ST_EstimatedExtent

Return the 'estimated' extent of the given spatial table

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_EstimatedExtent(text table_name, text geocolumn_name);

PlaidCloud

func.ST_EstimatedExtent(text table_name, text geocolumn_name)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.13 - func.Box3D

Returns a BOX3D representing the 3D extent of the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

Box3D(geometry geomA);

PlaidCloud

func.Box3D(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

2.14 - func.Box2D

Returns a BOX2D representing the 2D extent of the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

Box2D(geometry geomA);

PlaidCloud

func.Box2D(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

3 - Clustering Functions

3.1 - func.ST_ClusterWithin

Aggregate function that returns an array of GeometryCollections that represent a set of geometries separated by a specified distance

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ClusterWithin(geometry set g, float8 distance);

PlaidCloud

func.ST_ClusterWithin(geometry set g, float8 distance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

3.2 - func.ST_ClusterIntersecting

ClusterIntersecting is an aggregate function that returns an array of GeometryCollections that represent an interconnected set of geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ClusterIntersecting(geometry set g);

PlaidCloud

func.ST_ClusterIntersecting(geometry set g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4 - Geometry Accessors

4.1 - func.ST_Zmflag

Returns a code indicating the ZM coordinate dimension of a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Zmflag(geometry geomA);

PlaidCloud

func.ST_Zmflag(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.2 - func.ST_Z

Return the Z coordinate of the point, or NULL if not available. Input must be a point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Z(geometry a_point);

PlaidCloud

func.ST_Z(geometry a_point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.3 - func.ST_Y

Return the Y coordinate of the point, or NULL if not available. Input must be a point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Y(geometry a_point);

PlaidCloud

func.ST_Y(geometry a_point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.4 - func.ST_X

Return the X coordinate of the point, or NULL if not available. Input must be a point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_X(geometry a_point);

PlaidCloud

func.ST_X(geometry a_point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.5 - func.ST_Summary

Returns a text summary of the contents of the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Summary(geometry g);

PlaidCloud

func.ST_Summary(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.6 - func.ST_StartPoint

Returns the first point of a LINESTRING or CIRCULARLINESTRING geometry as a POINT

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_StartPoint(geometry geomA);

PlaidCloud

ST_StartPoint(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.7 - func.ST_PointN

Return the Nth point in a single linestring or circular linestring in the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PointN(geometry a_linestring, integer n);

PlaidCloud

func.ST_PointN(geometry a_linestring, integer n)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.8 - func.ST_PatchN

Returns the 1-based Nth geometry (face) if the geometry is a POLYHEDRALSURFACE or POLYHEDRALSURFACEM

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PatchN(geometry geomA, integer n);

PlaidCloud

ST_PatchN(geometry geomA, integer n)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.9 - func.ST_NumPoints

Return the number of points in an ST_LineString or ST_CircularString value

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NumPoints(geometry g1);

PlaidCloud

func.ST_NumPoints(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.10 - func.ST_NumPatches

Return the number of faces on a Polyhedral Surface

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NumPatches(geometry g1);

PlaidCloud

func.ST_NumPatches(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.11 - func.ST_NumInteriorRing

This function returns the number of interior rings of a polygon geom. It returns NULL if the geom is not a polygon.

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NumInteriorRing(geometry a_polygon);

PlaidCloud

ST_NumInteriorRing(geometry a_polygon)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.12 - func.ST_NumInteriorRings

Return the number of interior rings of a polygon geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NumInteriorRings(geometry a_polygon);

PlaidCloud

func.ST_NumInteriorRings(geometry a_polygon)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.13 - func.ST_NumGeometries

Returns the number of Geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NumGeometries(geometry geom);

PlaidCloud

func.ST_NumGeometries(geometry geom)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.14 - func.ST_NRings

If the geometry is a polygon or multi-polygon returns the number of rings

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NRings(geometry geomA);

PlaidCloud

func.ST_NRings(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.15 - func.ST_NPoints

Return the number of points in a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NPoints(geometry g1);

PlaidCloud

func.ST_NPoints(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.16 - func.ST_NDims

Returns the coordinate dimension of the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_NDims(geometry g1);

PlaidCloud

func.ST_NDims(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.17 - func.ST_MemSize

Returns the amount of memory space (in bytes) the geometry takes

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MemSize(geometry geomA);

PlaidCloud

func.ST_MemSize(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.18 - func.ST_M

Return the M coordinate of a Point, or NULL if not available. Input must be a Point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_M(geometry a_point);

PlaidCloud

func.ST_M(geometry a_point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.19 - func.ST_IsSimple

Returns true if this Geometry has no anomalous geometric points

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsSimple(geometry geomA);

PlaidCloud

func.ST_IsSimple(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.20 - func.ST_IsRing

Returns TRUE if this LINESTRING is both ST_IsClosed and ST_IsSimple (does not self intersect)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsRing(geometry g);

PlaidCloud

func.ST_IsRing(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.21 - func.ST_IsCollection

Returns TRUE if the geometry type of the argument is a geometry collection type

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsCollection(geometry g);

PlaidCloud

func.ST_IsCollection(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.22 - func.ST_IsClosed

Returns TRUE if the LINESTRING's start and end points are coincident

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsClosed(geometry g);

PlaidCloud

func.ST_IsClosed(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.23 - func.ST_InteriorRingN

Returns the Nth interior linestring ring of the polygon geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_InteriorRingN(geometry a_polygon, integer n);

PlaidCloud

func.ST_InteriorRingN(geometry a_polygon, integer n)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.24 - func.ST_HasArc

Returns true if a geometry or geometry collection contains a circular string

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_HasArc(geometry geomA);

PlaidCloud

func.ST_HasArc(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.25 - func.ST_GeometryN

This section describes functions and operators for examining and manipulating string values

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeometryN(geometry geomA, integer n);

PlaidCloud

func.ST_GeometryN(geometry geomA, integer n)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.26 - func.ST_ExteriorRing

Returns a line string representing the exterior ring of the POLYGON geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ExteriorRing(geometry a_polygon);

PlaidCloud

func.ST_ExteriorRing(geometry a_polygon)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.27 - func.ST_Envelope

Returns the double-precision (float8) minimum bounding box for the supplied geometry, as a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Envelope(geometry g1);

PlaidCloud

func.ST_Envelope(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.28 - func.ST_BoundingDiagonal

Returns the diagonal of the supplied geometry's bounding box as a LineString

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_BoundingDiagonal(geometry geom, boolean fits=false);

PlaidCloud

func.ST_BoundingDiagonal(geometry geom, boolean fits=False)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.29 - func.ST_EndPoint

Returns the last point of a LINESTRING as a POINT. Returns NULL if the input is not a LINESTRING

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_EndPoint(geometry g);

PlaidCloud

func.ST_EndPoint(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.30 - func.ST_DumpRings

This is a set-returning function (SRF). It returns a set of geometry_dump rows, as an integer and a geometry, aliased "path" and "geom"

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DumpRings(geometry a_polygon);

PlaidCloud

func.ST_DumpRings(geometry a_polygon)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.31 - func.ST_DumpPoints

This set-returning function (SRF) returns a set of geometry_dump rows formed by a geometry (geom) and an array of integers (path)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DumpPoints(geometry geom);

PlaidCloud

func.ST_DumpPoints(geometry geom)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.32 - func.ST_Dump

This is a set-returning function (SRF). It returns a set of geometry_dump rows, formed by a geometry (geom) and an array of integers (path)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Dump(geometry g1);

PlaidCloud

func.ST_Dump(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.33 - func.ST_Dimension

Return the topological dimension of this Geometry object, which must be less than or equal to the coordinate dimension

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Dimension(geometry g);

PlaidCloud

func.ST_Dimension(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.34 - func.ST_CoordDim

Return the coordinate dimension of the ST_Geometry value

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_CoordDim(geometry geomA);

PlaidCloud

func.ST_CoordDim(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.35 - func.ST_Boundary

Returns the closure of the combinatorial boundary of this Geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Boundary(geometry geomA);

PlaidCloud

func.ST_Boundary(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.36 - func.ST_GeometryType

Returns the type of the geometry as a string. 'ST_LineString', 'ST_Polygon','ST_MultiPolygon'

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeometryType(geometry g1);

PlaidCloud

func.ST_GeometryType(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

4.37 - func.ST_IsEmpty

Returns true if this Geometry is an empty geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsEmpty(geometry geomA);

PlaidCloud

func.ST_IsEmpty(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5 - Geometry Constructors

5.1 - func.ST_Collect

Collects geometries into a geometry collection

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Collect(geometry g1, geometry g2)

PlaidCloud

func.ST_Collect(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.2 - func.ST_LineFromMultiPoint

Creates a LineString from a MultiPoint geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineFromMultiPoint(geometry aMultiPoint); PlaidCloud

PlaidCloud

func.ST_LineFromMultiPoint(geometry aMultiPoint)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.3 - func.ST_MakeEnvelope

Creates a rectangular Polygon from the minimum and maximum values for X and Y

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakeEnvelope(float xmin, float ymin, float xmax, float ymax, integer srid=unknown);

PlaidCloud

func.ST_MakeEnvelope(float xmin, float ymin, float xmax, float ymax, integer srid=unknown);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.4 - func.ST_MakeLine

Creates a LineString containing the points of Point, MultiPoint, or LineString geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakeLine(geometry geom1, geometry geom2);

PlaidCloud

func.ST_MakeLine(geometry geom1, geometry geom2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.5 - func.ST_MakePoint

Creates a 2D, 3D Z or 4D ZM Point geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakePoint(float x, float y, float z, float m);

PlaidCloud

func.ST_MakePoint(float x, float y, float z, float m)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.6 - func.ST_MakePointM

Creates a point with X, Y and M (measure) coordinates

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakePointM(float x, float y, float m);

PlaidCloud

func.ST_MakePointM(float x, float y, float m)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.7 - func.ST_MakePolygon

Creates a Polygon formed by the given shell and optional array of holes

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakePolygon(geometry linestring);

PlaidCloud

func.ST_MakePolygon(geometry linestring)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.8 - func.ST_Point

Returns a Point with the given X and Y coordinate values

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Point(float x, float y);

PlaidCloud

func.ST_Point(float x, float y)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

5.9 - func.ST_Polygon

Returns a polygon built from the given LineString and sets the spatial reference system from the SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Polygon(geometry lineString, integer srid);

PlaidCloud

func.ST_Polygon(geometry lineString, integer srid)

External References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6 - Geometry Editors

6.1 - func.ST_SwapOrdinates

Returns a version of the given geometry with given ordinates swapped

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SwapOrdinates(geometry geom, cstring ords);

PlaidCloud

func.ST_SwapOrdinates(geometry geom, cstring ords)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.2 - func.ST_Snap

Snaps the vertices and segments of a geometry to another Geometry's vertices

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Snap(geometry input, geometry reference, float tolerance);

PlaidCloud

func.ST_Snap(geometry input, geometry reference, float tolerance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.3 - func.ST_SnapToGrid

Snap all points of the input geometry to the grid defined by its origin and cell size

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SnapToGrid(geometry geomA, float originX, float originY, float sizeX, float sizeY);

PlaidCloud

func.ST_SnapToGrid(geometry geomA, float originX, float originY, float sizeX, float sizeY)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.4 - func.ST_ShiftLongitude

Reads every point/vertex in a geometry, and if the longitude coordinate is <0, adds 360 to it

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ShiftLongitude(geometry geom);

PlaidCloud

func.ST_ShiftLongitude(geometry geom)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.5 - func.ST_SetPoint

Replace point N of linestring with given point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SetPoint(geometry linestring, integer zerobasedposition, geometry point);

PlaidCloud

func.ST_SetPoint(geometry linestring, integer zerobasedposition,   
geometry point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.6 - func.ST_Segmentize

Returns a modified geometry having no segment longer than the given max_segment_length

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Segmentize(geometry geom, float max_segment_length);

PlaidCloud

func.ST_Segmentize(geometry geom, float max_segment_length)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.7 - func.ST_Reverse

Can be used on any geometry and reverses the order of the vertexes

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Reverse(geometry g1);

PlaidCloud

func.ST_Reverse(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.8 - func.ST_RemoveRepeatedPoints

Returns a version of the given geometry with duplicated points removed

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_RemoveRepeatedPoints(geometry geom, float8 tolerance);

PlaidCloud

func.ST_RemoveRepeatedPoints(geometry geom, float8 tolerance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.9 - func.ST_RemovePoint

Remove a point from a linestring, given its 0-based index

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_RemovePoint(geometry linestring, integer offset);

PlaidCloud

func.ST_RemovePoint(geometry linestring, integer offset)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.10 - func.ST_Multi

Returns the geometry as a MULTI* geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Multi(geometry g1);

PlaidCloud

func.ST_Multi(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.11 - func.ST_LineToCurve

Converts plain LINESTRING/POLYGON to CIRCULAR STRINGs and Curved Polygons

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineToCurve(geometry geomANoncircular);

PlaidCloud

func.ST_LineToCurve(geometry geomANoncircular)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.12 - func.ST_LineMerge

Returns a (set of) LineString(s) formed by sewing together the constituent line work of a MULTILINESTRING

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineMerge(geometry amultilinestring);

PlaidCloud

func.ST_LineMerge(geometry amultilinestring)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.13 - func.ST_ForceCurve

Turns a geometry into its curved representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ForceCurve(geometry g);

PlaidCloud

func.ST_ForceCurve(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.14 - func.ST_ForceRHR

Forces the orientation of the vertices in a polygon to follow the area that is bounded by the polygon is to the right of the boundary

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ForceRHR(geometry g);

PlaidCloud

func.ST_ForceRHR(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.15 - func.ST_ForceSFS

This function supports Polyhedral surfaces, Triangles and Triangulated Irregular Network Surfaces

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ForceSFS(geometry geomA);

PlaidCloud

func.ST_ForceSFS(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.16 - func.ST_ForceCollection

Converts the geometry into a GEOMETRYCOLLECTION

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ForceCollection(geometry geomA);

PlaidCloud

func.ST_ForceCollection(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.17 - func.ST_Force4D

Forces the geometries into XYZM mode

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Force4D(geometry geomA, float Zvalue = 0.0, float Mvalue = 0.0);

PlaidCloud

ST_Force4D(geometry geomA, float Zvalue = 0.0, float Mvalue = 0.0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.18 - func.ST_Force3DM

Forces the geometries into XYM mode

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Force3DM(geometry geomA, float Mvalue = 0.0);

PlaidCloud

func.ST_Force3DM(geometry geomA, float Mvalue = 0.0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.19 - func.ST_Force3DZ

This function forces the geoms into XYZ mode. If a geom has no 'Z' compenent, then a 'Z coordinate' is automatically added

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Force3DZ(geometry geomA, float Zvalue = 0.0);

PlaidCloud

func.ST_Force3DZ(geometry geomA, float Zvalue = 0.0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

6.20 - func.ST_Force3D

Forces the geometries into XYZ mode

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Force3D(geometry geomA, float Zvalue = 0.0);

PlaidCloud

func.ST_Force3D(geometry geomA, float Zvalue = 0.0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6.21 - func.ST_Force2D

Forces the geometries into a "2-dimensional mode" so that all output representations will only have the X and Y coordinates

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Force2D(geometry geomA);

PlaidCloud

func.ST_Force2D(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6.22 - func.ST_FlipCoordinates

Returns a version of the given geometry with X and Y axis flipped

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_FlipCoordinates(geometry geom);

PlaidCloud

func.ST_FlipCoordinates(geometry geom)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6.23 - func.ST_CurveToLine

Converts a CIRCULAR STRING to LINESTRING or CURVEPOLYGON to POLYGON or MULTISURFACE to MULTIPOLYGON

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_CurveToLine(geometry curveGeom, float tolerance, integer tolerance_type, integer flags);

PlaidCloud

func.ST_CurveToLine(geometry curveGeom, float tolerance, integer tolerance_type, integer flags)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6.24 - func.ST_CollectionHomogenize

Given a geometry collection, returns the "simplest" representation of the contents

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_CollectionHomogenize(geometry collection);

PlaidCloud

func.ST_CollectionHomogenize(geometry collection)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6.25 - func.ST_CollectionExtract

Given a geometry collection, return a homogeneous multi-geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_CollectionExtract(geometry collection);

PlaidCloud

func.ST_CollectionExtract(geometry collection)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

6.26 - func.ST_AddPoint

Adds a point to a LineString before point (0-based index)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AddPoint(geometry linestring, geometry point);

PlaidCloud

func.ST_AddPoint(geometry linestring, geometry point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7 - Geometry Input

7.1 - func.ST_PointFromGeoHash

Return a point from a GeoHash string

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PointFromGeoHash(text geohash, integer precision=full_precision_of_geohash);

PlaidCloud

func.ST_PointFromGeoHash(text geohash, integer precision=full_precision_of_geohash)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.2 - func.ST_LineFromEncodedPolyline

Creates a LineString from an Encoded Polyline string

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineFromEncodedPolyline(text polyline, integer precision=5);

PlaidCloud

func.ST_LineFromEncodedPolyline(text polyline, integer precision=5)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.3 - func.ST_GMLToSQL

This method implements the SQL/MM specification. SQL-MM 3 5.1.50 (except for curves support)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GMLToSQL(text geomgml);

PlaidCloud

func.ST_GMLToSQL(text geomgml)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.4 - func.ST_GeomFromKML

Constructs a PostGIS ST_Geometry object from the OGC KML representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromKML(text geomkml);

PlaidCloud

func.ST_GeomFromKML(text geomkml)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.5 - func.ST_GeomFromGeoJSON

Constructs a PostGIS geometry object from the GeoJSON representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromGeoJSON(text geomjson);

PlaidCloud

func.ST_GeomFromGeoJSON(text geomjson)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.6 - func.ST_GeomFromGML

Constructs a PostGIS ST_Geometry object from the OGC GML representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromGML(text geomgml);

PlaidCloud

func.ST_GeomFromGML(text geomgml)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.7 - func.ST_GeomFromGeoHash

Return a geometry from a GeoHash string.

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromGeoHash(text geohash, integer precision=full_precision_of_geohash);

PlaidCloud

func.ST_GeomFromGeoHash(text geohash, integer precision=full_precision_of_geohash)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.8 - func.ST_Box2dFromGeoHash

Return a BOX2D from a GeoHash string

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Box2dFromGeoHash(text geohash, integer precision=full_precision_of_geohash);

PlaidCloud

func.ST_Box2dFromGeoHash(text geohash, integer precision=full_precision_of_geohash)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.9 - func.ST_WKBToSQL

This method implements the SQL/MM specification. SQL-MM 3 5.1.36

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_WKBToSQL(bytea WKB);

PlaidCloud

func.ST_WKBToSQL(bytea WKB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.10 - func.ST_PointFromWKB

This function, takes a binary representation of geometry and a (SRID) and creates the appropriate geometry type - POINT GEOMETRY

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PointFromWKB(bytea wkb);

PlaidCloud

func.ST_PointFromWKB(bytea wkb);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

7.11 - func.ST_LinestringFromWKB

This function, takes a binary representation of geometry and a (SRID) and creates the appropriate geometry type -LINESTRING GEOMETRY

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LinestringFromWKB(bytea WKB);

PlaidCloud

func.ST_LinestringFromWKB(bytea WKB);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.12 - func.ST_LineFromWKB

This function, takes a binary representation of geometry and a Spatial Reference System ID (SRID) and creates the appropriate geometry type

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineFromWKB(bytea WKB)

PlaidCloud

func.ST_LineFromWKB(bytea WKB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.13 - func.ST_GeomFromWKB

This function takes a binary representation of a geometry and a Spatial Reference System ID (SRID) and creates the appropriate geometry type

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromWKB(bytea geom);

PlaidCloud

func.ST_GeomFromWKB(bytea geom);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.14 - func.ST_GeomFromEWKB

Constructs a PostGIS ST_Geometry object from the OGC Extended Well-Known binary (EWKT) representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromEWKB(bytea EWKB);

PlaidCloud

func.ST_GeomFromEWKB(bytea EWKB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.15 - func.ST_GeogFromWKB

This function, takes a well-known binary representation (WKB) of a geometry and creates an instance of the appropriate geography type

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeogFromWKB(bytea wkb);

PlaidCloud

func.ST_GeogFromWKB(bytea wkb)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.16 - func.ST_WKTToSQL

This method implements the SQL/MM specification. SQL-MM 3 5.1.34

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_WKTToSQL(text WKT);

PlaidCloud

func.ST_WKTToSQL(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.17 - func.ST_PolygonFromText

Makes a Polygon Geometry from WKT with the given SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PolygonFromText(text WKT);

PlaidCloud

func.ST_PolygonFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.18 - func.ST_PointFromText

Constructs a PostGIS ST_Geometry point object from the OGC Well-Known text representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PointFromText(text WKT);

PlaidCloud

func.ST_PointFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.19 - func.ST_MPolyFromText

Makes a MultiPolygon from WKT with the given SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MPolyFromText(text WKT);

PlaidCloud

func.ST_MPolyFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.20 - func.ST_MPointFromText

Makes a Multi-Point Geometry from WKT with the given SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MPointFromText(text WKT);

PlaidCloud

func.ST_MPointFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.21 - func.ST_MLineFromText

Makes a Multi-Line Geometry from Well-Known-Text (WKT) with the given SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MLineFromText(text WKT);

PlaidCloud

func.ST_MLineFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.22 - func.ST_LineFromText

Makes a Linestring Geometry from WKT with the given SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineFromText(text WKT);

PlaidCloud

func.ST_LineFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.23 - func.ST_GeomFromText

Constructs a PostGIS ST_Geometry object from the OGC Well-Known text representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromText(text WKT);

PlaidCloud

func.ST_GeomFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.24 - func.ST_GeometryFromText

This method implements the SQL/MM specification and OpenGIS simple features implementation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeometryFromText(text WKT);

PlaidCloud

func.ST_GeometryFromText(text WKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.25 - func.ST_GeomFromEWKT

Constructs a PostGIS ST_Geometry object from the OGC Extended Well-Known text (EWKT) representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomFromEWKT(text EWKT);

PlaidCloud

func.ST_GeomFromEWKT(text EWKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.26 - func.ST_GeomCollFromText

Makes a collection Geometry from the Well-Known-Text (WKT) representation with the given SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeomCollFromText(text WKT, integer srid);

PlaidCloud

func.ST_GeomCollFromText(text WKT, integer srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.27 - func.ST_GeographyFromText

Returns a geography object from the well-known text representation. SRID 4326 is assumed if unspecified

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeographyFromText(text EWKT);

PlaidCloud

func.ST_GeographyFromText(text EWKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.28 - func.ST_GeogFromText

Returns a geography object from the well-known text or extended well-known representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeogFromText(text EWKT);

PlaidCloud

func.ST_GeogFromText(text EWKT)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.29 - func.ST_BdMPolyFromText

Construct a Polygon given an arbitrary collection of closed linestrings, polygons, MultiLineStrings as Well-Known text representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_BdMPolyFromText(text WKT, integer srid);

PlaidCloud

func.ST_BdMPolyFromText(text WKT, integer srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.30 - func.ST_BdPolyFromText

Construct a Polygon given an arbitrary collection of closed linestrings as a MultiLineString Well-Known text representation

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_BdPolyFromText(text WKT, integer srid);

PlaidCloud

func.ST_BdPolyFromText(text WKT, integer srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

7.31 - func.GeometryType

Returns the type of the geometry as a string

Syntax

func.GeometryType()

Examples

Documentation for func.GeometryType is coming soon.

References

PostgreSQL Documentation

8 - Geometry Output

8.1 - func.ST_GeoHash

Return a GeoHash representation (http://en.wikipedia.org/wiki/Geohash) of the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_GeoHash(geometry geom, integer maxchars=full_precision_of_point);

PlaidCloud

func.ST_GeoHash(geometry geom, integer maxchars=full_precision_of_point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.2 - func.ST_AsX3D

Returns a geometry as an X3D xml formatted node element

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsX3D(geometry g1, integer maxdecimaldigits=15, integer options=0);

PlaidCloud

func.ST_AsX3D(geometry g1, integer maxdecimaldigits=15, integer options=0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.3 - func.ST_AsSVG

Return the geometry as Scalar Vector Graphics (SVG) path data

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsSVG(geometry geom, integer rel=0, integer maxdecimaldigits=15);

PlaidCloud

func.ST_AsSVG(geometry geom, integer rel=0, integer maxdecimaldigits=15)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.4 - func.ST_AsTWKB

Returns the geometry in TWKB (Tiny Well-Known Binary) format

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsTWKB(geometry g1, integer decimaldigits_xy=0, integer decimaldigits_z=0, integer decimaldigits_m=0, boolean include_sizes=false, boolean include_bounding boxes=false);

PlaidCloud

func.ST_AsTWKB(geometry g1, integer decimaldigits_xy=0, integer decimaldigits_z=0, integer decimaldigits_m=0, boolean include_sizes=false, boolean include_bounding boxes=false)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.5 - func.ST_AsLatLonText

Returns the Degrees, Minutes, Seconds representation of the point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsLatLonText(geometry pt, text format='');

PlaidCloud

func.ST_AsLatLonText(geometry pt, text format='')

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.6 - func.ST_AsKML

Return the geometry as a Keyhole Markup Language (KML) element

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsKML(geometry geom, integer maxdecimaldigits=15, text nprefix=NULL);

PlaidCloud

func.ST_AsKML(geometry geom, integer maxdecimaldigits=15, text nprefix=NULL)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.7 - func.ST_AsGML

Return the geometry as a Geography Markup Language (GML) element

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsGML(geometry geom, integer maxdecimaldigits=15, integer options=0);

PlaidCloud

func.ST_AsGML(geometry geom, integer maxdecimaldigits=15, integer options=0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.8 - func.ST_AsGeoJSON

Return the geometry as a GeoJSON "geometry" object, or the row as a GeoJSON "feature" object

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsGeoJSON(geography geog, integer maxdecimaldigits=9, integer options=0);

PlaidCloud

func.ST_AsGeoJSON(geography geog, integer maxdecimaldigits=9, integer options=0)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.9 - func.ST_AsEncodedPolyline

Returns the geometry as an Encoded Polyline

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsEncodedPolyline(geometry geom, integer precision=5);

PlaidCloud

func.ST_AsEncodedPolyline(geometry geom, integer precision=5)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.10 - func.ST_AsHEXEWKB

Returns a Geometry in HEXEWKB format (as text) using either little-endian (NDR) or big-endian (XDR) encoding

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsHEXEWKB(geometry g1);

PlaidCloud

func.ST_AsHEXEWKB(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.11 - func.ST_AsEWKB

Returns the Well-Known Binary representation of the geometry with SRID metadata

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsEWKB(geometry g1);

PlaidCloud

func.ST_AsEWKB(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.12 - func.ST_AsBinary

Returns the Well-Known Binary representation of the geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsBinary(geometry g1);

PlaidCloud

func.ST_AsBinary(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.13 - func.ST_AsText

Returns the Well-Known Text representation of the geometry/geography

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsText(geometry g1);

PlaidCloud

func.ST_AsText(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

8.14 - func.ST_AsEWKT

Returns the Well-Known Text representation of the geometry prefixed with the SRID

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AsEWKT(geometry g1);

PlaidCloud

func.ST_AsEWKT(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

9 - Geometry Processing

9.1 - func.ST_SetEffectiveArea

Sets the effective area for each vertex, using the Visvalingam-Whyatt algorithm

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SetEffectiveArea(geometry geomA, float threshold = 0, integer set_area = 1);

PlaidCloud

func.ST_SetEffectiveArea(geometry geomA, float threshold = 0, integer set_area = 1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.2 - func.ST_SimplifyVW

Returns a "simplified" version of the given geometry using the Visvalingam-Whyatt algorithm

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SimplifyVW(geometry geomA, float tolerance);

PlaidCloud

func.ST_SimplifyVW(geometry geomA, float tolerance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.3 - func.ST_SimplifyPreserveTopology

Simplifies a geometry by removing points that would fall within a specified distance tolerance.

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SimplifyPreserveTopology(geometry geomA, float tolerance);

PlaidCloud

func.ST_SimplifyPreserveTopology(geometry geomA, float tolerance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.4 - func.ST_Simplify

Returns a "simplified" version of the given geometry using the Douglas-Peucker algorithm

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Simplify(geometry geomA, float tolerance, boolean preserveCollapsed);

PlaidCloud

func.ST_Simplify(geometry geomA, float tolerance, boolean preserveCollapsed)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.5 - func.ST_SharedPaths

Returns a collection containing paths shared by the two input geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SharedPaths(geometry lineal1, geometry lineal2);

PlaidCloud

func.ST_SharedPaths(geometry lineal1, geometry lineal2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.6 - func.ST_Polygonize

Creates a GeometryCollection containing the polygons formed by the constituent linework of a set of geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Polygonize(geometry set geomfield);

PlaidCloud

func.ST_Polygonize(geometry set geomfield)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.7 - func.ST_PointOnSurface

Returns a POINT guaranteed to intersect a surface

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PointOnSurface(geometry g1);

PlaidCloud

func.ST_PointOnSurface(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.8 - func.ST_OffsetCurve

Return an offset line at a given distance and side from an input line

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_OffsetCurve(geometry line, float signed_distance, text style_parameters='');

PlaidCloud

func.ST_OffsetCurve(geometry line, float signed_distance, text style_parameters='')

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.9 - func.ST_MinimumBoundingCircle

Returns the smallest circle polygon that contains a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MinimumBoundingCircle(geometry geomA, integer num_segs_per_qt_circ=48);

PlaidCloud

func.ST_MinimumBoundingCircle(geometry geomA, integer num_segs_per_qt_circ=48);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.10 - func.ST_DelaunayTriangles

Return the Delaunay triangulation of the vertices of the input geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DelaunayTriangles(geometry g1, float tolerance, int4 flags);

PlaidCloud

func.ST_DelaunayTriangles(geometry g1, float tolerance, int4 flags)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.11 - func.ST_ConvexHull

Computes the convex hull of a geometry. The convex hull is the smallest convex geometry that encloses all geometries in the input

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ConvexHull(geometry geomA);

PlaidCloud

func.ST_ConvexHull(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.12 - func.ST_ConcaveHull

The concave hull of a geometry represents a possibly concave geometry that encloses the input geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ConcaveHull(geometry geom, float target_percent, boolean allow_holes = false);

PlaidCloud

func.ST_ConcaveHull(geometry geom, float target_percent, boolean allow_holes = false)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.13 - func.ST_Centroid

Computes a point which is the geometric center of mass of a geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Centroid(geometry g1);

PlaidCloud

func.ST_Centroid(geometry g1);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.14 - func.ST_BuildArea

Creates an areal geometry formed by the constituent linework of the input geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_BuildArea(geometry geom);

PlaidCloud

func.ST_BuildArea(geometry geom)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.15 - func.ST_Buffer

Returns a geometry/geography that represents all points whose distance from this Geometry/geography is less than or equal to distance

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Buffer(geometry g1, float radius_of_buffer, text buffer_style_parameters = '');

PlaidCloud

func.ST_Buffer(geometry g1, float radius_of_buffer, text buffer_style_parameters = '')

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

9.16 - func.St_Accum

Aggregate. Constructs an array of geometries

Syntax

func.ST_Accum()

Examples

Documentation for func.ST_Accum is coming soon.

References

PostgreSQL Documentation

10 - Geometry Validation

10.1 - func.ST_MakeValid

The function attempts to create a valid representation of a given invalid geometry without losing any of the input vertices

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MakeValid(geometry input);

PlaidCloud

func.ST_MakeValid(geometry input)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

10.2 - func.ST_IsValidReason

Returns text stating if a geometry is valid or not an if not valid, a reason why

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsValidReason(geometry geomA, integer flags);

PlaidCloud

func.ST_IsValidReason(geometry geomA, integer flags)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

10.3 - func.ST_IsValidDetail

Returns a valid_detail row, formed by a boolean (valid) stating whether the geometry is valid or invalid

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsValidDetail(geometry geom, integer flags);

PlaidCloud

func.ST_IsValidDetail(geometry geom, integer flags)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

10.4 - func.ST_IsValid

Test if an ST_Geometry value is well-formed in 2D according to the OGC rules

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsValid(geometry g);

PlaidCloud

func.ST_IsValid(geometry g)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

11 - Linear Referencing

11.1 - func.ST_AddMeasure

Return a derived geometry with measure elements linearly interpolated between the start and end points

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_AddMeasure(geometry geom_mline, float8 measure_start, float8 measure_end);

PlaidCloud

func.ST_AddMeasure(geometry geom_mline, float8 measure_start, float8 measure_end)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.2 - func.ST_InterpolatePoint

Return the value of the measure dimension of a geometry at the point closed to the provided point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_InterpolatePoint(geometry line, geometry point);

PlaidCloud

func.ST_InterpolatePoint(geometry line, geometry point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.3 - func.ST_LocateBetweenElevations

Return a derived geometry (collection) value with elements that intersect the specified range of elevations inclusively

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LocateBetweenElevations(geometry geom, float8 elevation_start, float8 elevation_end);

PlaidCloud

func.ST_LocateBetweenElevations(geometry geom, float8 elevation_start, float8 elevation_end)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.4 - func.ST_LocateBetween

Return a derived geometry collection with elements that match the specified range of measures inclusively

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LocateBetween(geometry geom, float8 measure_start, float8 measure_end, float8 offset);

PlaidCloud

func.ST_LocateBetween(geometry geom, float8 measure_start, float8 measure_end, float8 offset)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.5 - func.ST_LocateAlong

Return a derived geometry collection value with elements that match the specified measure

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LocateAlong(geometry ageom_with_measure, float8 a_measure, float8 offset);

PlaidCloud

func.ST_LocateAlong(geometry ageom_with_measure, float8 a_measure, float8 offset)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.6 - func.ST_LineSubstring

Return a linestring being a substring of the input one starting and ending at the given fractions of total 2d length

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineSubstring(geometry a_linestring, float8 startfraction, float8 endfraction);

PlaidCloud

func.ST_LineSubstring(geometry a_linestring, float8 startfraction, float8 endfraction)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.7 - func.ST_LineLocatePoint

Returns a float between 0 and 1 representing the location of the closest point on LineString to the given Point

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineLocatePoint(geometry a_linestring, geometry a_point);

PlaidCloud

func.ST_LineLocatePoint(geometry a_linestring, geometry a_point)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

11.8 - func.ST_LineInterpolatePoint

Returns a point interpolated along a line

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineInterpolatePoint(geometry a_linestring, float8 a_fraction);

PlaidCloud

func.ST_LineInterpolatePoint(geometry a_linestring, float8 a_fraction)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

12 - Measurement Functions

12.1 - func.ST_ShortestLine

Returns the 2-dimensional shortest line between two geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ShortestLine(geometry g1, geometry g2);

PlaidCloud

func.ST_ShortestLine(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.2 - func.ST_Project

Returns a point projected from a start point along a geodesic using a given distance and azimuth (bearing)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Project(geography g1, float distance, float azimuth);

PlaidCloud

func.ST_Project(geography g1, float distance, float azimuth)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.3 - func.ST_Perimeter2D

Returns the 2-dimensional perimeter of a polygonal geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Perimeter2D(geometry geomA);

PlaidCloud

func.ST_Perimeter2D(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.4 - func.ST_Perimeter

Returns the 2D perimeter of the geometry/geography if it is a ST_Surface, ST_MultiSurface (Polygon, MultiPolygon)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Perimeter(geometry g1);

PlaidCloud

func.ST_Perimeter(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.5 - func.ST_MaxDistance

Returns the 2-dimensional maximum distance between two geometries, in projected units

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MaxDistance(geometry g1, geometry g2);

PlaidCloud

func.ST_MaxDistance(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.6 - func.ST_LongestLine

Returns the 2-dimensional longest line between the points of two geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LongestLine(geometry g1, geometry g2);

PlaidCloud

func.ST_LongestLine(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.7 - func.ST_3DShortestLine

Returns the 3-dimensional shortest line between two geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DShortestLine(geometry g1, geometry g2);

PlaidCloud

func.ST_3DShortestLine(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.8 - func.ST_3DPerimeter

Returns the 3-dimensional perimeter of the geometry, if it is a polygon or multi-polygon

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DPerimeter(geometry geomA);

PlaidCloud

func.ST_3DPerimeter(geometry geomA)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.9 - func.ST_3DMaxDistance

Returns the 3-dimensional maximum cartesian distance between two geometries in projected units

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DMaxDistance(geometry g1, geometry g2);

PlaidCloud

func.ST_3DMaxDistance(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.10 - func.ST_LengthSpheroid

Returns the 2D or 3D length/perimeter of a lon/lat geometry on a spheroid

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LengthSpheroid(geometry a_geometry, spheroid a_spheroid);

PlaidCloud

func.ST_LengthSpheroid(geometry a_geometry, spheroid a_spheroid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.11 - func.ST_3DLongestLine

Returns the 3-dimensional longest line between two geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DLongestLine(geometry g1, geometry g2);

PlaidCloud

func.ST_3DLongestLine(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.12 - func.ST_3DLength

Returns the 3-dimensional or 2-dimensional length of the geometry if it is a linestring or multi-linestring

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DLength(geometry a_3dlinestring);

PlaidCloud

func.ST_3DLength(geometry a_3dlinestring)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.13 - func.ST_Length2D

Returns the 2D length of the geometry if it is a linestring or multi-linestring

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Length2D(geometry a_2dlinestring);

PlaidCloud

func.ST_Length2D(geometry a_2dlinestring)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.14 - func.ST_Length

Returns the 2D Cartesian length of the geometry for geometry types and uses the inverse geodesic calculation for geography types

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Length(geometry a_2dlinestring);

PlaidCloud

func.ST_Length(geometry a_2dlinestring)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.15 - func.ST_HausdorffDistance

Returns the Hausdorff distance between two geometries, a measure of how similar or dissimilar 2 geometries are

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_HausdorffDistance(geometry g1, geometry g2);

PlaidCloud

func.ST_HausdorffDistance(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.16 - func.ST_DistanceSpheroid

Returns minimum distance in meters between two lon/lat geometries given a particular spheroid

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DistanceSpheroid(geometry geomlonlatA, geometry geomlonlatB, spheroid measurement_spheroid);

PlaidCloud

func.ST_DistanceSpheroid(geometry geomlonlatA, geometry geomlonlatB, spheroid measurement_spheroid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.17 - func.ST_Distance

For geometry types returns the minimum 2D Cartesian (planar) distance between two geometries, in projected units (spatial ref units)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Distance(geometry g1, geometry g2);

PlaidCloud

func.ST_Distance(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.18 - func.ST_3DClosestPoint

Returns the 3-dimensional point on g1 that is closest to g2

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DClosestPoint(geometry g1, geometry g2);

PlaidCloud

func.ST_3DClosestPoint(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.19 - func.ST_ClosestPoint

Returns the 2-dimensional point on g1 that is closest to g2

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ClosestPoint(geometry g1, geometry g2);

PlaidCloud

func.ST_ClosestPoint(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.20 - func.ST_Azimuth

Returns the azimuth in radians of the segment defined by the given point geometries, or NULL if the two points are coincident

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Azimuth(geometry pointA, geometry pointB);

PlaidCloud

func.ST_Azimuth(geometry pointA, geometry pointB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.21 - func.ST_Area

Returns the area of a polygonal geometry

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Area(geometry g1);

PlaidCloud

func.ST_Area(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

12.22 - func.ST_Length2D_Spheroid

Returns the 2D length or perimeter of the geometry on a spheroid

Syntax

func.ST_Length2D_Spheroid()

Examples

Documentation for func.ST_Length2D_Spheroid is coming soon.

References

PostgreSQL Documentation

13 - Overlay Functions

13.1 - func.ST_UnaryUnion

A single-input variant of ST_Union

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_UnaryUnion(geometry geom, float8 gridSize = -1);

PlaidCloud

func.ST_UnaryUnion(geometry geom, float8 gridSize = -1);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.2 - func.ST_Union

Unions the input geometries, merging geometry to produce a result geometry with no overlaps

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Union(geometry g1, geometry g2);

PlaidCloud

func.ST_Union(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.3 - func.ST_SymDifference

Returns a geometry representing the portions of geonetries A and B that do not intersect

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SymDifference(geometry geomA, geometry geomB, float8 gridSize = -1);

PlaidCloud

func.ST_SymDifference(geometry geomA, geometry geomB, float8 gridSize = -1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.4 - func.ST_Subdivide

Divides geometry into parts using rectilinear lines, until each part can be represented using no more than max_vertices

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Subdivide(geometry geom, integer max_vertices=256, float8 gridSize = -1);

PlaidCloud

func.ST_Subdivide(geometry geom, integer max_vertices=256, float8 gridSize = -1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.5 - func.ST_Split

The function supports splitting a line by a (multi)point, (multi)line or (multi)polygon boundary, or a (multi)polygon by line

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Split(geometry input, geometry blade);

PlaidCloud

func.ST_Split(geometry input, geometry blade)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.6 - func.ST_Node

Returns a (Multi)LineString representing the fully noded version of a collection of linestrings

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Node(geometry geom);

PlaidCloud

func.ST_Node(geometry geom)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.7 - func.ST_MemUnion

Aggregate function which unions geometry in a memory-efficent but slower way

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_MemUnion(geometry set geomfield);

PlaidCloud

func.ST_MemUnion(geometry set geomfield)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.8 - func.ST_Intersection

Returns a geometry representing the point-set intersection of two geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Intersection( geography geogA , geography geogB );

PlaidCloud

func.ST_Intersection( geography geogA , geography geogB )

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.9 - func.ST_Difference

Returns a geometry representing the part of geometry A that does not intersect geometry B

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Difference(geometry geomA, geometry geomB, float8 gridSize = -1);

PlaidCloud

func.ST_Difference(geometry geomA, geometry geomB, float8 gridSize = -1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

13.10 - func.ST_ClipByBox2D

Clips a geometry by a 2D box in a fast and tolerant but possibly invalid way

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ClipByBox2D(geometry geom, box2d box);

PlaidCloud

func.ST_ClipByBox2D(geometry geom, box2d box)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

14 - Spatial Reference System Functions

14.1 - func.ST_Transform

Returns a new geometry with its coordinates transformed to a different spatial reference system

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Transform(geometry g1, integer srid);

PlaidCloud

func.ST_Transform(geometry g1, integer srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

14.2 - func.ST_SRID

Returns the spatial reference identifier for the ST_Geometry as defined in spatial_ref_sys table

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SRID(geometry g1);

PlaidCloud

func.ST_SRID(geometry g1)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

14.3 - func.ST_SetSRID

Sets the SRID on a geometry to a particular integer value

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_SetSRID(geometry geom, integer srid);

PlaidCloud

func.ST_SetSRID(geometry geom, integer srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

14.4 - func.Find_SRID

Returns the integer SRID of the specified geometry column

Syntax

func.Find_SRID()

Examples

Documentation for func.Find_SRID is coming soon.

References

PostgreSQL Documentation

15 - Spatial Relationships

15.1 - func.ST_PointInsideCircle

Returns true if the geometry is a point and is inside the circle with center center_x,center_y and radius radius

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_PointInsideCircle(geometry a_point, float center_x, float center_y, float radius);

PlaidCloud

func.ST_PointInsideCircle(geometry a_point, float center_x, float center_y, float radius)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.2 - func.ST_DWithin

Returns true if the geometries are within a given distance

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DWithin(geometry g1, geometry g2, double precision distance_of_srid);

PlaidCloud

func.ST_DWithin(geometry g1, geometry g2, double precision distance_of_srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.3 - func.ST_DFullyWithin

Returns true if the geometries are entirely within the specified distance of one another

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DFullyWithin(geometry g1, geometry g2, double precision distance);

PlaidCloud

func.ST_DFullyWithin(geometry g1, geometry g2, double precision distance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.4 - func.ST_Within

Returns TRUE if geometry A is completely inside geometry B

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Within(geometry A, geometry B);

PlaidCloud

func.ST_Within(geometry A, geometry B)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.5 - func.ST_Touches

Returns TRUE if the only points in common between g1 and g2 lie in the union of the boundaries of g1 and g2

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Touches(geometry g1, geometry g2);

PlaidCloud

func.ST_Touches(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.6 - func.ST_RelateMatch

Tests if a Dimensionally Extended 9-Intersection Model (DE-9IM) intersectionMatrix value satisfies an intersectionMatrixPattern

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_RelateMatch(text intersectionMatrix, text intersectionMatrixPattern);

PlaidCloud

func.ST_RelateMatch(text intersectionMatrix, text intersectionMatrixPattern)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.7 - func.ST_Relate

These functions allow testing and evaluating the spatial (topological) relationship between two geometries

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Relate(geometry geomA, geometry geomB);

PlaidCloud

func.ST_Relate(geometry geomA, geometry geomB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.8 - func.ST_OrderingEquals

Compares two geometries and returns it (TRUE) if the geometries are equal and the coordinates are in the same order

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_OrderingEquals(geometry A, geometry B);

PlaidCloud

func.ST_OrderingEquals(geometry A, geometry B)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.9 - func.ST_Overlaps

Returns TRUE if the Geometries "spatially overlap"

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Overlaps(geometry A, geometry B);

PlaidCloud

func.ST_Overlaps(geometry A, geometry B)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.10 - func.ST_Intersects

If a geometry or geography shares any portion of space then they intersect

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Intersects( geometry geomA , geometry geomB );

PlaidCloud

func.ST_Intersects( geometry geomA , geometry geomB )

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.11 - func.ST_Equals

Returns TRUE if the given Geometries are "spatially equal"

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Equals(geometry A, geometry B);

PlaidCloud

func.ST_Equals(geometry A, geometry B)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.12 - func.ST_Disjoint

Overlaps, Touches, Within imply geometries are not spatially disjoint, unless they return true, then they are not spatially disjoint

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Disjoint( geometry A , geometry B );

PlaidCloud

func.ST_Disjoint( geometry A , geometry B )

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.13 - func.ST_LineCrossingDirection

Given 2 linestrings, returns an integer between -3 and 3 indicating what kind of crossing behavior exists between them

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_LineCrossingDirection(geometry linestringA, geometry linestringB);

PlaidCloud

func.ST_LineCrossingDirection(geometry linestringA, geometry linestringB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.14 - func.ST_3DDWithin

For geometry type returns true if the 3d distance between two objects is within distance_of_srid specified projected units

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DDWithin(geometry g1, geometry g2, double precision distance_of_srid);

PlaidCloud

func.ST_3DDWithin(geometry g1, geometry g2, double precision distance_of_srid)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.15 - func.ST_Crosses

Takes two geometry objects and returns TRUE if their intersection "spatially cross", but not all interior points in common

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Crosses(geometry g1, geometry g2);

PlaidCloud

func.ST_Crosses(geometry g1, geometry g2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.16 - func.ST_3DDFullyWithin

Returns true if the 3D geometries are fully within the specified distance of one another

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DDFullyWithin(geometry g1, geometry g2, double precision distance);

PlaidCloud

func.ST_3DDFullyWithin(geometry g1, geometry g2, double precision distance)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.17 - func.ST_CoveredBy

Returns 1 (TRUE) if no point in Geometry/Geography A is outside Geometry/Geography B

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_CoveredBy(geometry geomA, geometry geomB);

PlaidCloud

func.ST_CoveredBy(geometry geomA, geometry geomB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.18 - func.ST_ContainsProperly

Returns true if B intersects the interior of A but not the boundary (or exterior)

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ContainsProperly(geometry geomA, geometry geomB);

PlaidCloud

func.ST_ContainsProperly(geometry geomA, geometry geomB);

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.19 - func.ST_Covers

Returns 1 (TRUE) if no point in Geometry/Geography B is outside Geometry/Geography A

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Covers(geometry geomA, geometry geomB);

PlaidCloud

func.ST_Covers(geometry geomA, geometry geomB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.20 - func.ST_Contains

Geo 'A' contains Geo 'B' ONLY IF no points of B lie in the exterior of A, and at least one point of B interior lies in A interior

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_Contains(geometry geomA, geometry geomB);

PlaidCloud

func.ST_Contains(geometry geomA, geometry geomB)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

15.21 - func.ST_3DIntersects

Overlaps, Touches, Within all imply spatial intersection and if any returns true, then the geometries also spatially intersect

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_3DIntersects( geometry geomA , geometry geomB );

PlaidCloud

func.ST_3DIntersects( geometry geomA , geometry geomB )

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation

16 - Trajectory Functions

16.1 - func.ST_DistanceCPA

Returns the minimum distance two moving objects have ever been each other

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_DistanceCPA(geometry track1, geometry track2);

PlaidCloud

func.ST_DistanceCPA(geometry track1, geometry track2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

16.2 - func.ST_CPAWithin

Checks whether two moving objects have ever been within the specified maximum distance

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_CPAWithin(geometry track1, geometry track2, float8 maxdist);

PlaidCloud

func.ST_CPAWithin(geometry track1, geometry track2, float8 maxdist)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

16.3 - func.ST_ClosestPointOfApproach

Returns the smallest measure at which points interpolated along the given trajectories are at the smallest distance

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_ClosestPointOfApproach(geometry track1, geometry track2);

PlaidCloud

func.ST_ClosestPointOfApproach(geometry track1, geometry track2)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.

16.4 - func.ST_IsValidTrajectory

Tests if a geometry encodes a valid trajectory

Description

PlaidCloud expressions and filters provide use of most non-administrative PostGIS methods. PostGIS methods are accessed by prefixing the standard method name with func..

Examples

SQL

ST_IsValidTrajectory(geometry line);

PlaidCloud

func.ST_IsValidTrajectory(geometry line)

References

PostGIS Official Documentation for this method can be found here.

Additional capabilities and usage examples can be found in the PostGIS documentation.