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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
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Copyright (C) 1998-2018 OpenLink Software
This project is free software; you can redistribute it and/or modify it
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-->
<refentry id="fn_earth_radius">
<refmeta>
<refentrytitle>earth_radius</refentrytitle>
<refmiscinfo>geo</refmiscinfo>
</refmeta>
<refnamediv>
<refname>earth_radius</refname>
<refpurpose>returns geom.mean of radius of Earth</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_earth_radius">
<funcprototype id="fproto_earth_radius">
<funcdef><function>earth_radius</function></funcdef>
<paramdef></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_earth_radius">
<title>Description</title>
<para>returns geom.mean of radius of Earth in kilometers, 6367.43568</para>
</refsect1>
<refsect1 id="ret_earth_radius"><title>Return Types</title>
<para>Returns any.</para>
</refsect1>
<refsect1 id="examples_earth_radius">
<title>Examples</title>
<example id="ex_earth_radius"><title>Simple Use</title>
<programlisting><![CDATA[
SELECT earth_radius ()
earth_radius
ANY
6367.43568
]]></programlisting>
</example>
</refsect1>
<para><link linkend="fn_dist_from_point_to_line_segment"><function>dist_from_point_to_line_segment()</function></link></para>
<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_Z"><function>ST_Z()</function></link></para>
<para><link linkend="fn_st_distance"><function>st_distance()</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>
</refentry>
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