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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-->
<refentry id="fn_st_point">
<refmeta>
<refentrytitle>st_point</refentrytitle>
<refmiscinfo>geo</refmiscinfo>
</refmeta>
<refnamediv>
<refname>st_point</refname>
<refpurpose>Returns a point geometry.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_st_point">
<funcprototype id="fproto_st_point">
<funcdef><function>st_point</function></funcdef>
<paramdef>in <parameter>x</parameter> double precision</paramdef>
<paramdef>in <parameter>y</parameter> double precision</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_st_point">
<title>Description</title>
<para>Returns a point geometry. The x coordinate corresponds to longitude.</para>
</refsect1>
<refsect1 id="params_st_point">
<title>Parameters</title>
<refsect2><title>x</title>
<para>X coordinate. Corresponds to longitude.</para>
</refsect2>
<refsect2><title>y</title>
<para>Y coordinate.</para>
</refsect2>
</refsect1>
<refsect1 id="ret_st_point"><title>Return Types</title>
<para>Returns a point geometry.</para>
</refsect1>
<refsect1 id="examples_st_point">
<title>Examples</title>
<example id="ex_st_point"><title>Simple Use</title>
<programlisting><![CDATA[
SQL>select st_point (0, 52);
callret
VARCHAR
_______________________________________________________________________________
POINT(0 52)
1 Rows. -- 40 msec.
SQL>
SPARQL
SELECT ?m (bif:st_distance (?geo, bif:st_point (0, 52)))
WHERE
{
?m geo:geometry ?geo .
?m a <http://dbpedia.org/ontology/City> .
FILTER (bif:st_intersects (?geo, bif:st_point (0, 52), 100))
}
ORDER BY DESC 2
LIMIT 20;
m callret-1
VARCHAR VARCHAR
_______________________________________________________________________________
http://dbpedia.org/resource/Weston-on-Trent 138.7082197019335
http://dbpedia.org/resource/Weston-on-Trent 137.7213767969613
http://dbpedia.org/resource/Weston-on-Trent 136.4597167847218
http://dbpedia.org/resource/Weston-on-Trent 134.1807668663677
http://dbpedia.org/resource/Weston-on-Trent 133.104337839536
http://dbpedia.org/resource/Weston-on-Trent 133.104337839536
http://dbpedia.org/resource/Nonington 132.7368236183588
http://dbpedia.org/resource/Nonington 132.1339163200362
http://dbpedia.org/resource/Nonington 132.1339163200362
http://dbpedia.org/resource/Nonington 130.5478483560461
http://dbpedia.org/resource/Nonington 130.1620410981843
http://dbpedia.org/resource/Nonington 129.8549842943355
http://dbpedia.org/resource/Nonington 129.6459280567849
http://dbpedia.org/resource/Nonington 129.4504858595742
http://dbpedia.org/resource/Nonington 129.2790713235814
http://dbpedia.org/resource/Nonington 128.9081040147881
http://dbpedia.org/resource/Nonington 128.8845164618929
http://dbpedia.org/resource/Nonington 128.6676189617872
http://dbpedia.org/resource/Nonington 128.2565253458452
http://dbpedia.org/resource/Nonington 128.2551696344652
20 Rows. -- 120 msec.
]]></programlisting>
</example>
</refsect1>
<refsect1 id="seealso_st_point">
<title>See Also</title>
<para><link linkend="fn_st_x"><function>st_x()</function></link></para>
<para><link linkend="fn_st_y"><function>st_y()</function></link></para>
<para><link linkend="fn_st_distance"><function>st_distance()</function></link></para>
<para><link linkend="fn_ST_SRID"><function>st_srid()</function></link></para>
<para><link linkend="fn_ST_SetSRID"><function>st_setsrid()</function></link></para>
<para><link linkend="fn_st_astext"><function>st_astext()</function></link></para>
<para><link linkend="fn_st_geomfromtext"><function>st_geomfromtext()</function></link></para>
<para><link linkend="fn_st_intersects"><function>st_intersects()</function></link></para>
<para><link linkend="fn_st_contains"><function>st_contains()</function></link></para>
<para><link linkend="fn_st_within"><function>st_within()</function></link></para>
<para><link linkend="fn_isgeometry"><function>isgeometry()</function></link></para>
<para><link linkend="fn_geo_insert"><function>geo_insert()</function></link></para>
<para><link linkend="fn_geo_delete"><function>geo_delete()</function></link></para>
<para><link linkend="fn_rdf_geo_add"><function>DB.DBA.RDF_GEO_ADD()</function></link></para>
<para><link linkend="fn_rdf_geo_fill"><function>DB.DBA.RDF_GEO_FILL()</function></link></para>
</refsect1>
</refentry>
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