From: Regina Obe <lr@pcorp.us>
Date: Mon, 23 Apr 2012 05:48:25 +0000 (+0000)
Subject: make igst index link tag friendly and provide example of nd index.
X-Git-Tag: 2.0.1~119
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4ccfba853156fc9305bb707d3a7e6fec6783f0dc;p=postgis

make igst index link tag friendly and provide example of nd index.

git-svn-id: http://svn.osgeo.org/postgis/trunk@9654 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/doc/using_postgis_dataman.xml b/doc/using_postgis_dataman.xml
index 800bf2fdb..9769e68d0 100644
--- a/doc/using_postgis_dataman.xml
+++ b/doc/using_postgis_dataman.xml
@@ -2231,7 +2231,7 @@ WHERE
 	  </listitem>
 	</itemizedlist>
 
-	<sect2>
+	<sect2 id="gist_indexes">
 	  <title>GiST Indexes</title>
 
 	  <para>GiST stands for "Generalized Search Tree" and is a generic form of
@@ -2248,6 +2248,8 @@ WHERE
 	  follows:</para>
 
 	  <para><programlisting>CREATE INDEX [indexname] ON [tablename] USING GIST ( [geometryfield] ); </programlisting></para>
+	  <para>The above syntax will always build a 2D-index.  To get the an n-dimensional index supported in PostGIS 2.0+ for the geometry type, you can create one using this syntax</para>
+	  <programlisting>CREATE INDEX [indexname] ON [tablename] USING GIST ([geometryfield] gist_geometry_ops_nd);</programlisting>
 
 	  <para>Building a spatial index is a computationally intensive exercise:
 	  on tables of around 1 million rows, on a 300MHz Solaris machine, we have