[postgis-commits] svn - r2889 - in trunk/doc: . html html/image_src
html/images
postgis-commits at postgis.refractions.net
postgis-commits at postgis.refractions.net
Mon Jul 28 22:11:11 PDT 2008
Author: kneufeld
Date: 2008-07-28 22:11:11 -0700 (Mon, 28 Jul 2008)
New Revision: 2889
Added:
trunk/doc/html/image_src/
trunk/doc/html/image_src/st_centroid01.svg
trunk/doc/html/image_src/st_centroid02.svg
trunk/doc/html/image_src/st_centroid03.svg
trunk/doc/html/image_src/st_centroid04.svg
trunk/doc/html/images/st_centroid01.png
trunk/doc/html/images/st_centroid02.png
trunk/doc/html/images/st_centroid03.png
trunk/doc/html/images/st_centroid04.png
Modified:
trunk/doc/reference.xml
trunk/doc/reference_new.xml
Log:
moved over st_centroid and provided examples in both svg and png format. Eventually, ImageMagick will be used to generate the png files, but for now they are committed into svn.
Added: trunk/doc/html/image_src/st_centroid01.svg
===================================================================
--- trunk/doc/html/image_src/st_centroid01.svg 2008-07-29 04:42:56 UTC (rev 2888)
+++ trunk/doc/html/image_src/st_centroid01.svg 2008-07-29 05:11:11 UTC (rev 2889)
@@ -0,0 +1,45 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN'
+ 'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd'>
+<svg xmlns:xlink="http://www.w3.org/1999/xlink" style="fill-opacity:1; color-rendering:auto; color-interpolation:auto; stroke:black; text-rendering:auto; stroke-linecap:square; stroke-miterlimit:10; stroke-opacity:1; shape-rendering:auto; fill:black; stroke-dasharray:none; font-weight:normal; stroke-width:1; font-family:'Dialog'; font-style:normal; stroke-linejoin:miter; font-size:12; stroke-dashoffset:0; image-rendering:auto;" xmlns="http://www.w3.org/2000/svg"
+><!--Generated by the Batik Graphics2D SVG Generator--><defs id="genericDefs"
+ /><g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:rgb(0,178,0); text-rendering:optimizeLegibility; fill-opacity:0.9882; stroke-opacity:0.9882; stroke:rgb(0,178,0);"
+ ><rect x="3.6724" width="3" height="3" y="176.0862" style="stroke:none;"
+ /><rect x="3.6724" y="176.0862" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="3.6724" width="3" height="3" y="176.0862" style="stroke:none;"
+ /><rect x="3.6724" y="176.0862" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="3.6724" width="3" height="3" y="141.6034" style="stroke:none;"
+ /><rect x="3.6724" y="141.6034" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="20.9138" width="3" height="3" y="124.3621" style="stroke:none;"
+ /><rect x="20.9138" y="124.3621" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="38.1552" width="3" height="3" y="158.8448" style="stroke:none;"
+ /><rect x="38.1552" y="158.8448" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="20.9138" width="3" height="3" y="158.8448" style="stroke:none;"
+ /><rect x="20.9138" y="158.8448" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="3.6724" width="3" height="3" y="55.3966" style="stroke:none;"
+ /><rect x="3.6724" y="55.3966" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="55.3966" width="3" height="3" y="176.0862" style="stroke:none;"
+ /><rect x="55.3966" y="176.0862" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="124.3621" width="3" height="3" y="176.0862" style="stroke:none;"
+ /><rect x="124.3621" y="176.0862" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="3.6724" width="3" height="3" y="107.1207" style="stroke:none;"
+ /><rect x="3.6724" y="107.1207" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="141.6034" width="3" height="3" y="38.1552" style="stroke:none;"
+ /><rect x="141.6034" y="38.1552" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="176.0862" width="3" height="3" y="38.1552" style="stroke:none;"
+ /><rect x="176.0862" y="38.1552" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="49.6494" y="122.9253" width="3" style="fill:rgb(0,0,255); stroke:none;" height="3"
+ /></g
+ ><g style="stroke-linecap:butt; fill-opacity:0.9882; fill:rgb(0,0,178); text-rendering:optimizeLegibility; stroke-linejoin:bevel; stroke:rgb(0,0,178); stroke-width:8; stroke-opacity:0.9882;"
+ ><rect x="49.6494" width="3" height="3" y="122.9253" style="fill:none;"
+ /></g
+ ></g
+></svg
+>
Added: trunk/doc/html/image_src/st_centroid02.svg
===================================================================
--- trunk/doc/html/image_src/st_centroid02.svg 2008-07-29 04:42:56 UTC (rev 2888)
+++ trunk/doc/html/image_src/st_centroid02.svg 2008-07-29 05:11:11 UTC (rev 2889)
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN'
+ 'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd'>
+<svg xmlns:xlink="http://www.w3.org/1999/xlink" style="fill-opacity:1; color-rendering:auto; color-interpolation:auto; stroke:black; text-rendering:auto; stroke-linecap:square; stroke-miterlimit:10; stroke-opacity:1; shape-rendering:auto; fill:black; stroke-dasharray:none; font-weight:normal; stroke-width:1; font-family:'Dialog'; font-style:normal; stroke-linejoin:miter; font-size:12; stroke-dashoffset:0; image-rendering:auto;" xmlns="http://www.w3.org/2000/svg"
+><!--Generated by the Batik Graphics2D SVG Generator--><defs id="genericDefs"
+ /><g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="stroke-linecap:butt; fill-opacity:0.9882; fill:rgb(0,178,0); text-rendering:optimizeLegibility; stroke-linejoin:bevel; stroke:rgb(0,178,0); stroke-width:8; stroke-opacity:0.9882;"
+ ><path style="fill:none;" d="M194.8276 177.5862 L177.5862 143.1035 L160.3448 177.5862 L160.3448 143.1035 L91.3793 177.5862 L74.1379 177.5862 L125.8621 125.8621 L39.6552 177.5862 L39.6552 143.1035 L5.1724 177.5862 L5.1724 125.8621 L39.6552 108.6207 L5.1724 22.4138 L177.5862 39.6552"
+ /></g
+ ><g style="fill:rgb(0,0,255); text-rendering:optimizeLegibility; fill-opacity:0.9882; stroke-opacity:0.9882; stroke:rgb(0,0,255);"
+ ><rect x="80.8852" width="3" height="3" y="116.7116" style="stroke:none;"
+ /></g
+ ><g style="stroke-linecap:butt; fill-opacity:0.9882; fill:rgb(0,0,178); text-rendering:optimizeLegibility; stroke-linejoin:bevel; stroke:rgb(0,0,178); stroke-width:8; stroke-opacity:0.9882;"
+ ><rect x="80.8852" width="3" height="3" y="116.7116" style="fill:none;"
+ /></g
+ ></g
+></svg
+>
Added: trunk/doc/html/image_src/st_centroid03.svg
===================================================================
--- trunk/doc/html/image_src/st_centroid03.svg 2008-07-29 04:42:56 UTC (rev 2888)
+++ trunk/doc/html/image_src/st_centroid03.svg 2008-07-29 05:11:11 UTC (rev 2889)
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN'
+ 'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd'>
+<svg xmlns:xlink="http://www.w3.org/1999/xlink" style="fill-opacity:1; color-rendering:auto; color-interpolation:auto; stroke:black; text-rendering:auto; stroke-linecap:square; stroke-miterlimit:10; stroke-opacity:1; shape-rendering:auto; fill:black; stroke-dasharray:none; font-weight:normal; stroke-width:1; font-family:'Dialog'; font-style:normal; stroke-linejoin:miter; font-size:12; stroke-dashoffset:0; image-rendering:auto;" xmlns="http://www.w3.org/2000/svg"
+><!--Generated by the Batik Graphics2D SVG Generator--><defs id="genericDefs"
+ /><g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:rgb(0,178,0); text-rendering:optimizeLegibility; fill-opacity:0.9882; stroke-opacity:0.9882; stroke:rgb(0,178,0);"
+ ><path d="M5.1724 177.5862 L5.1724 22.4138 L194.8276 22.4138 L194.8276 39.6552 L194.8276 56.8966 L56.8966 74.1379 L56.8966 160.3448 L160.3448 160.3448 L194.8276 177.5862 L5.1724 177.5862" style="stroke:none; fill-rule:evenodd;"
+ /><path style="fill:none; stroke-width:8; fill-rule:evenodd; stroke-linejoin:bevel; stroke-linecap:butt;" d="M5.1724 177.5862 L5.1724 22.4138 L194.8276 22.4138 L194.8276 39.6552 L194.8276 56.8966 L56.8966 74.1379 L56.8966 160.3448 L160.3448 160.3448 L194.8276 177.5862 L5.1724 177.5862"
+ /><rect x="74.1811" y="86.8461" width="3" style="fill:rgb(0,0,255); stroke:none;" height="3"
+ /></g
+ ><g style="stroke-linecap:butt; fill-opacity:0.9882; fill:rgb(0,0,178); text-rendering:optimizeLegibility; stroke-linejoin:bevel; stroke:rgb(0,0,178); stroke-width:8; stroke-opacity:0.9882;"
+ ><rect x="74.1811" width="3" height="3" y="86.8461" style="fill:none;"
+ /></g
+ ></g
+></svg
+>
Added: trunk/doc/html/image_src/st_centroid04.svg
===================================================================
--- trunk/doc/html/image_src/st_centroid04.svg 2008-07-29 04:42:56 UTC (rev 2888)
+++ trunk/doc/html/image_src/st_centroid04.svg 2008-07-29 05:11:11 UTC (rev 2889)
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE svg PUBLIC '-//W3C//DTD SVG 1.0//EN'
+ 'http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd'>
+<svg xmlns:xlink="http://www.w3.org/1999/xlink" style="fill-opacity:1; color-rendering:auto; color-interpolation:auto; stroke:black; text-rendering:auto; stroke-linecap:square; stroke-miterlimit:10; stroke-opacity:1; shape-rendering:auto; fill:black; stroke-dasharray:none; font-weight:normal; stroke-width:1; font-family:'Dialog'; font-style:normal; stroke-linejoin:miter; font-size:12; stroke-dashoffset:0; image-rendering:auto;" xmlns="http://www.w3.org/2000/svg"
+><!--Generated by the Batik Graphics2D SVG Generator--><defs id="genericDefs"
+ /><g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:white; text-rendering:optimizeLegibility; stroke:white;"
+ ><rect x="0" width="200" height="200" y="0" style="stroke:none;"
+ /></g
+ ><g style="fill:rgb(0,178,0); text-rendering:optimizeLegibility; fill-opacity:0.9882; stroke-opacity:0.9882; stroke:rgb(0,178,0);"
+ ><path d="M194.8276 22.4138 L108.6207 22.4138 L125.8621 39.6552 L91.3793 56.8966 L177.5862 74.1379 L194.8276 22.4138" style="stroke:none; fill-rule:evenodd;"
+ /><path style="fill:none; stroke-width:8; fill-rule:evenodd; stroke-linejoin:bevel; stroke-linecap:butt;" d="M194.8276 22.4138 L108.6207 22.4138 L125.8621 39.6552 L91.3793 56.8966 L177.5862 74.1379 L194.8276 22.4138"
+ /><path d="M194.8276 177.5862 L194.8276 143.1035 L160.3448 160.3448 L143.1035 108.6207 L108.6207 177.5862 L91.3793 125.8621" style="fill:none; stroke-width:8; stroke-linejoin:bevel; stroke-linecap:butt;"
+ /><rect x="38.1552" width="3" height="3" y="158.8448" style="stroke:none;"
+ /><rect x="38.1552" y="158.8448" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="38.1552" width="3" height="3" y="89.8793" style="stroke:none;"
+ /><rect x="38.1552" y="89.8793" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="20.9138" width="3" height="3" y="55.3966" style="stroke:none;"
+ /><rect x="20.9138" y="55.3966" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="72.6379" width="3" height="3" y="107.1207" style="stroke:none;"
+ /><rect x="72.6379" y="107.1207" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="20.9138" width="3" height="3" y="141.6034" style="stroke:none;"
+ /><rect x="20.9138" y="141.6034" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="72.6379" width="3" height="3" y="176.0862" style="stroke:none;"
+ /><rect x="72.6379" y="176.0862" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="55.3966" width="3" height="3" y="141.6034" style="stroke:none;"
+ /><rect x="55.3966" y="141.6034" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="3.6724" width="3" height="3" y="176.0862" style="stroke:none;"
+ /><rect x="3.6724" y="176.0862" width="3" style="stroke-linecap:butt; fill:none; stroke-linejoin:bevel; stroke-width:8;" height="3"
+ /><rect x="149.0997" y="43.6524" width="3" style="fill:rgb(0,0,255); stroke:none;" height="3"
+ /></g
+ ><g style="stroke-linecap:butt; fill-opacity:0.9882; fill:rgb(0,0,178); text-rendering:optimizeLegibility; stroke-linejoin:bevel; stroke:rgb(0,0,178); stroke-width:8; stroke-opacity:0.9882;"
+ ><rect x="149.0997" width="3" height="3" y="43.6524" style="fill:none;"
+ /></g
+ ></g
+></svg
+>
Added: trunk/doc/html/images/st_centroid01.png
===================================================================
(Binary files differ)
Property changes on: trunk/doc/html/images/st_centroid01.png
___________________________________________________________________
Name: svn:mime-type
+ application/octet-stream
Added: trunk/doc/html/images/st_centroid02.png
===================================================================
(Binary files differ)
Property changes on: trunk/doc/html/images/st_centroid02.png
___________________________________________________________________
Name: svn:mime-type
+ application/octet-stream
Added: trunk/doc/html/images/st_centroid03.png
===================================================================
(Binary files differ)
Property changes on: trunk/doc/html/images/st_centroid03.png
___________________________________________________________________
Name: svn:mime-type
+ application/octet-stream
Added: trunk/doc/html/images/st_centroid04.png
===================================================================
(Binary files differ)
Property changes on: trunk/doc/html/images/st_centroid04.png
___________________________________________________________________
Name: svn:mime-type
+ application/octet-stream
Modified: trunk/doc/reference.xml
===================================================================
--- trunk/doc/reference.xml 2008-07-29 04:42:56 UTC (rev 2888)
+++ trunk/doc/reference.xml 2008-07-29 05:11:11 UTC (rev 2889)
@@ -168,17 +168,6 @@
<variablelist>
<varlistentry>
- <term>ST_Centroid(geometry)</term>
-
- <listitem>
- <para>Returns the centroid of the geometry as a point.</para>
-
- <para>Computation will be more accurate if performed by the GEOS
- module (enabled at compile time).</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
<term>ST_Area(geometry)</term>
<listitem>
@@ -2226,17 +2215,6 @@
</varlistentry>
<varlistentry>
- <term>ST_Centroid</term>
-
- <listitem>
- <para>Return mathematical centroid of the ST_Surface or
- ST_MultiSurface value.</para>
-
- <para>SQL-MM 3: 8.1.4, 9.5.5</para>
- </listitem>
- </varlistentry>
-
- <varlistentry>
<term>ST_Contains</term>
<listitem>
@@ -2640,7 +2618,7 @@
</listitem>
</varlistentry>
- <varlistentry>
+ <varlistentry id="ST_PointOnSurface">
<term>ST_PointOnSurface</term>
<listitem>
Modified: trunk/doc/reference_new.xml
===================================================================
--- trunk/doc/reference_new.xml 2008-07-29 04:42:56 UTC (rev 2888)
+++ trunk/doc/reference_new.xml 2008-07-29 05:11:11 UTC (rev 2889)
@@ -2131,6 +2131,135 @@
</refentry>
+ <refentry id="ST_Centroid">
+ <refnamediv>
+ <refname>ST_Centroid</refname>
+
+ <refpurpose>Returns the geometric center of a geometry.</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+ <funcsynopsis>
+ <funcprototype>
+ <funcdef>boolean <function>ST_Centroid</function></funcdef>
+
+ <paramdef><type>geometry </type>
+ <parameter>g1</parameter></paramdef>
+ </funcprototype>
+ </funcsynopsis>
+ </refsynopsisdiv>
+
+ <refsection>
+ <title>Description</title>
+
+ <para>Computes the geometric center of a geometry, or equivalently,
+ the center of mass of the geometry as a <varname>POINT</varname>. For
+ [<varname>MULTI</varname>]<varname>POINT</varname>s, this is computed
+ as the arithmetric mean of the input coordinates. For
+ [<varname>MULTI</varname>]<varname>LINESTRING</varname>s, this is
+ computed as the weighted length of each line segment. For
+ [<varname>MULTI</varname>]<varname>POLYGON</varname>s, "weight" is
+ thought in terms of area. If an empty geometry is supplied, an empty
+ <varname>GEOMETRYCOLLECTION</varname> is returned. If
+ <varname>NULL</varname> is supplied, <varname>NULL</varname> is
+ returned.</para>
+
+ <para>The centroid is equal to the centroid of the set of component
+ Geometries of highest dimension (since the lower-dimension geometries
+ contribute zero "weight" to the centroid).</para>
+
+ <note><para>Computation will be more accurate if performed by the GEOS
+ module (enabled at compile time).</para></note>
+
+ <para><inlinemediaobject>
+ <imageobject>
+ <imagedata fileref="images/check.png" />
+ </imageobject>
+ </inlinemediaobject> This method implements the <ulink
+ url="http://www.opengeospatial.org/standards/sfs">OpenGIS Simple
+ Features Implementation Specification for SQL.</ulink></para>
+
+ <para><inlinemediaobject>
+ <imageobject>
+ <imagedata fileref="images/check.png" />
+ </imageobject>
+ </inlinemediaobject> This method implements the SQL/MM
+ specification: SQL-MM 3: 8.1.4, 9.5.5</para>
+ </refsection>
+
+ <refsection>
+ <title>Examples</title>
+
+ <para>In each of the following illustrations, the blue dot represents
+ the centroid of the source geometry.</para>
+
+ <informaltable>
+ <tgroup cols="2">
+ <tbody>
+ <row>
+ <entry><para><informalfigure>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="images/st_centroid01.png" />
+ </imageobject>
+
+ <caption><para>Centroid of a
+ <varname>MULTIPOINT</varname></para></caption>
+ </mediaobject>
+ </informalfigure></para></entry>
+
+ <entry><para><informalfigure>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="images/st_centroid02.png" />
+ </imageobject>
+
+ <caption><para>Centroid of a
+ <varname>LINESTRING</varname></para></caption>
+ </mediaobject>
+ </informalfigure></para></entry>
+ </row>
+
+ <row>
+ <entry><para><informalfigure>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="images/st_centroid03.png" />
+ </imageobject>
+
+ <caption><para>Centroid of a
+ <varname>POLYGON</varname></para></caption>
+ </mediaobject>
+ </informalfigure></para></entry>
+
+ <entry><para><informalfigure>
+ <mediaobject>
+ <imageobject>
+ <imagedata fileref="images/st_centroid04.png" />
+ </imageobject>
+
+ <caption><para>Centroid of a
+ <varname>GEOMETRYCOLLECTION</varname></para></caption>
+ </mediaobject>
+ </informalfigure></para></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+
+ <programlisting>SELECT ST_AsText(ST_Centroid('MULTIPOINT ( -1 0, -1 2, -1 3, -1 4, -1 7, 0 1, 0 3, 1 1, 2 0, 6 0, 7 8, 9 8, 10 6 )'));
+ st_astext
+------------------------------------------
+ POINT(2.30769230769231 3.30769230769231)
+(1 row)</programlisting>
+ </refsection>
+
+ <refsection>
+ <title>See Also</title>
+
+ <para><xref linkend="ST_PointOnSurface" /></para>
+ </refsection>
+ </refentry>
<refentry id="ST_Crosses">
<refnamediv>
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