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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_isgeometry">
<refmeta>
<refentrytitle>isgeometry</refentrytitle>
<refmiscinfo>geo</refmiscinfo>
</refmeta>
<refnamediv>
<refname>isgeometry</refname>
<refpurpose>Returns 1 if the argument is a geometry.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_isgeometry">
<funcprototype id="fproto_isgeometry">
<funcdef><function>isgeometry</function></funcdef>
<paramdef>in <parameter>x</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_isgeometry">
<title>Description</title>
<para>Returns 1 if the argument is a geometry.</para>
</refsect1>
<refsect1 id="params_isgeometry">
<title>Parameters</title>
<refsect2><title>x</title>
<para>The geometry value.</para>
</refsect2>
</refsect1>
<refsect1 id="ret_isgeometry"><title>Return Types</title>
<para>Returns int.</para>
</refsect1>
<refsect1 id="examples_isgeometry">
<title>Examples</title>
<example id="ex_isgeometry"><title>Simple example</title>
<programlisting><![CDATA[
SQL>SELECT isgeometry(st_point(0, 52));
callret
VARCHAR
___________________________
1
No. of rows in result: 1
SQL>SPARQL
SELECT ?m
WHERE
{
?m a <http://dbpedia.org/ontology/City> .
FILTER (bif:isgeometry(?m) = 0)
}
LIMIT 10
m
VARCHAR
__________________________________________________
http://dbpedia.org/resource/Berg%2C_Upper_Bavaria
http://dbpedia.org/resource/Grasbrunn
http://dbpedia.org/resource/Putzbrunn
http://dbpedia.org/resource/Ottobrunn
http://dbpedia.org/resource/Dietramszell
http://dbpedia.org/resource/Prutting
http://dbpedia.org/resource/Gauting
http://dbpedia.org/resource/Lucerne
http://dbpedia.org/resource/Hamburg
http://dbpedia.org/resource/Bavaria
No. of rows in result: 10
]]></programlisting>
</example>
</refsect1>
<refsect1 id="seealso_isgeometry">
<title>See Also</title>
<para><link linkend="fn_st_point"><function>st_point</function></link></para>
<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_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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