<refentry id="ST_AddPoint">
<refnamediv>
<refname>ST_AddPoint</refname>
- <refpurpose>Adds a point to a LineString before point <position>
- (0-based index).</refpurpose>
+ <refpurpose>Add a point to a LineString.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<refnamediv>
<refname>ST_Affine</refname>
- <refpurpose>Applies a 3d affine transformation to the geometry to do things like translate, rotate, scale in one step.</refpurpose>
+ <refpurpose>Apply a 3d affine transformation to a geometry.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Force2D</refname>
- <refpurpose>Forces the geometries into a "2-dimensional mode" so that
- all output representations will only have the X and Y coordinates.</refpurpose>
+ <refpurpose>Force the geometries into a "2-dimensional mode".</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Force3D</refname>
- <refpurpose>Forces the geometries into XYZ mode. This is an alias for ST_Force3DZ.</refpurpose>
+ <refpurpose>Force the geometries into XYZ mode. This is an alias for ST_Force3DZ.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Force3DZ</refname>
- <refpurpose>Forces the geometries into XYZ mode. This is a synonym for ST_Force3D.</refpurpose>
+ <refpurpose>Force the geometries into XYZ mode.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Force3DM</refname>
- <refpurpose>Forces the geometries into XYM mode.</refpurpose>
+ <refpurpose>Force the geometries into XYM mode.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Force4D</refname>
- <refpurpose>Forces the geometries into XYZM mode. </refpurpose>
+ <refpurpose>Force the geometries into XYZM mode. </refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_ForceCollection</refname>
- <refpurpose>Converts the geometry into a GEOMETRYCOLLECTION.</refpurpose>
+ <refpurpose>Convert the geometry into a GEOMETRYCOLLECTION.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_ForceSFS</refname>
- <refpurpose>Forces the geometries to use SFS 1.1 geometry types only.</refpurpose>
+ <refpurpose>Force the geometries to use SFS 1.1 geometry types only.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_ForceRHR</refname>
- <refpurpose>Forces the orientation of the vertices in a polygon to follow the
+ <refpurpose>Force the orientation of the vertices in a polygon to follow the
Right-Hand-Rule.</refpurpose>
</refnamediv>
<refnamediv>
<refname>ST_ForceCurve</refname>
- <refpurpose>Upcasts a geometry into its curved type, if applicable.</refpurpose>
+ <refpurpose>Upcast a geometry into its curved type, if applicable.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_LineMerge</refname>
- <refpurpose>Returns a (set of) LineString(s) formed by sewing together
+ <refpurpose>Return a (set of) LineString(s) formed by sewing together
a MULTILINESTRING.</refpurpose>
</refnamediv>
<refname>ST_CollectionExtract</refname>
<refpurpose>
-Given a (multi)geometry, returns a (multi)geometry consisting only of elements of the specified type.
+Given a (multi)geometry, return a (multi)geometry consisting only of elements of the specified type.
</refpurpose>
</refnamediv>
<refname>ST_CollectionHomogenize</refname>
<refpurpose>
- Given a geometry collection, returns the "simplest" representation of the contents.
+ Given a geometry collection, return the "simplest" representation of the contents.
</refpurpose>
</refnamediv>
<refnamediv>
<refname>ST_Multi</refname>
- <refpurpose>Returns the geometry as a MULTI* geometry. If the geometry
- is already a MULTI*, it is returned unchanged.</refpurpose>
+ <refpurpose>Return the geometry as a MULTI* geometry.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Normalize</refname>
- <refpurpose>Returns the geometry in its canonical form.</refpurpose>
+ <refpurpose>Return the geometry in its canonical form.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refentry id="ST_RemovePoint">
<refnamediv>
<refname>ST_RemovePoint</refname>
- <refpurpose>Removes point from a linestring. Offset is 0-based.</refpurpose>
+ <refpurpose>Remove point from a linestring.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<refsection>
<title>Description</title>
- <para>Removes point from a linestring. Useful for turning a closed ring into an open line string</para>
+ <para>Remove a point from a linestring, given its 0-based index. Useful for turning a closed ring into an open line string</para>
<para>Availability: 1.1.0</para>
<para>&Z_support;</para>
</refsection>
<refentry id="ST_Reverse">
<refnamediv>
<refname>ST_Reverse</refname>
- <refpurpose>Returns the geometry with vertex order reversed.</refpurpose>
+ <refpurpose>Return the geometry with vertex order reversed.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_Scale</refname>
- <refpurpose>Scales the geometry to a new size by multiplying the
- ordinates with the parameters. Ie: ST_Scale(geom, Xfactor, Yfactor,
- Zfactor).
- </refpurpose>
+ <refpurpose>Scale a geometry by given factors.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refname>ST_Segmentize</refname>
<refpurpose>Return a modified geometry/geography having no segment longer than the
- given distance. Distance computation is performed in 2d
- only. For geometry, length units are in units of spatial reference. For geography, units are in meters.</refpurpose>
+ given distance.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refentry id="ST_SetPoint">
<refnamediv>
<refname>ST_SetPoint</refname>
- <refpurpose>Replace point N of linestring with given point. Index is
- 0-based. Negative indexes are counted backwards, so that -1 is the last point.</refpurpose>
+ <refpurpose>Replace point of a linestring with a given point.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis>
<refnamediv>
<refname>ST_SetSRID</refname>
- <refpurpose>Sets the SRID on a geometry to a particular integer
+ <refpurpose>Set the SRID on a geometry to a particular integer
value.</refpurpose>
</refnamediv>
<refnamediv>
<refname>ST_Transform</refname>
- <refpurpose>Returns a new geometry with its coordinates transformed to
+ <refpurpose>Return a new geometry with its coordinates transformed to
a different spatial reference.</refpurpose>
</refnamediv>
<refnamediv>
<refname>ST_Translate</refname>
- <refpurpose>Translates the geometry to a new location using the numeric
- parameters as offsets. Ie: ST_Translate(geom, X, Y) or ST_Translate(geom, X, Y,Z).</refpurpose>
+ <refpurpose>Translate a geometry by given offsets.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refnamediv>
<refname>ST_TransScale</refname>
- <refpurpose>Translates the geometry using the deltaX and deltaY args,
- then scales it using the XFactor, YFactor args, working in 2D only.
- </refpurpose>
+ <refpurpose>Translate a geometry by given factors and offsets.</refpurpose>
</refnamediv>
<refsynopsisdiv>