[postgis-tickets] [SCM] PostGIS branch master updated. 3.1.0alpha1-117-g4e431eb
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commit 4e431eb6b4b63ced545d66641236bcac855b8fba
Author: Regina Obe <lr at pcorp.us>
Date: Mon May 11 19:22:17 2020 -0400
Add note that ST_Point and ST_MakePoint are faster for points as pointed out by God
diff --git a/doc/reference_input.xml b/doc/reference_input.xml
index a275a00..9087f13 100644
--- a/doc/reference_input.xml
+++ b/doc/reference_input.xml
@@ -383,6 +383,43 @@ SELECT ST_GeomFromEWKT('POLYHEDRALSURFACE(
<para>&sfs_compliant; s3.2.6.2 - option SRID is from the conformance suite.</para>
<para>&sqlmm_compliant; SQL-MM 3: 5.1.40</para>
<para>&curve_support;</para>
+
+ <refentry id="ST_GeomFromText">
+ <refnamediv>
+ <refname>ST_GeomFromText</refname>
+ <refpurpose>Return a specified ST_Geometry value from Well-Known Text representation (WKT).</refpurpose>
+ </refnamediv>
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>geometry <function>ST_GeomFromText</function></funcdef>
+ <paramdef><type>text </type> <parameter>WKT</parameter></paramdef>
+ </funcprototype>
+ <funcprototype>
+ <funcdef>geometry <function>ST_GeomFromText</function></funcdef>
+ <paramdef><type>text </type> <parameter>WKT</parameter></paramdef>
+ <paramdef><type>integer </type> <parameter>srid</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsection>
+ <title>Description</title>
+
+ <para>Constructs a PostGIS ST_Geometry object from the OGC Well-Known text representation.</para>
+
+ <!-- optionally mention that this function uses indexes if appropriate -->
+ <note>
+ <para>There are two variants of ST_GeomFromText function. The first takes no SRID and returns a geometry
+ with no defined spatial reference system (SRID=0). The second takes a SRID as the second argument
+ and returns a geometry that includes this SRID as part of its metadata.
+ </para>
+ </note>
+
+ <para>&sfs_compliant; s3.2.6.2 - option SRID is from the conformance suite.</para>
+ <para>&sqlmm_compliant; SQL-MM 3: 5.1.40</para>
+ <para>&curve_support;</para>
+ <note><para>While not OGC-compliant, <xref linkend="ST_MakePoint" /> is faster than ST_GeomFromText and ST_PointFromText. It is also easier to use for numeric coordinate values. <xref linkend="ST_Point" /> is another option similar in speed to <xref linkend="ST_Point" /> and is OGC-compliant, but doesn't support anything but 2D points.</para></note>
<warning><para>Changed: 2.0.0 In prior versions of PostGIS ST_GeomFromText('GEOMETRYCOLLECTION(EMPTY)') was allowed. This is now illegal in PostGIS 2.0.0 to better conform with SQL/MM standards. This should now be
written as ST_GeomFromText('GEOMETRYCOLLECTION EMPTY')</para></warning>
-----------------------------------------------------------------------
Summary of changes:
doc/reference_input.xml | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
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