From: Regina Obe <lr@pcorp.us>
Date: Mon, 21 Jul 2008 11:38:00 +0000 (+0000)
Subject: delete reference to ST_Equals in reference.xml - alread in new version, include an... 
X-Git-Tag: 1.4.0b1~829
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=998fa07bcbf0025ad5b5fa28a64965d74e4a17e5;p=postgis

delete reference to ST_Equals in reference.xml - alread in new version, include an ST_DWithin non-join join example.

git-svn-id: http://svn.osgeo.org/postgis/trunk@2870 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/doc/reference.xml b/doc/reference.xml
index de013f8f4..7fb8db45e 100644
--- a/doc/reference.xml
+++ b/doc/reference.xml
@@ -23,23 +23,6 @@
       <title>Geometry Relationship Functions</title>
 
       <variablelist>
-        <varlistentry>
-          <term>ST_Equals(geometry, geometry)</term>
-
-          <listitem>
-            <para>Returns TRUE if the given Geometries are "spatially
-            equal". Use this for a 'better' answer than '='.
-            equals('LINESTRING(0 0, 10 10)','LINESTRING(0 0, 5 5, 10 10)') is
-            true.  Note by spatially equal we also mean ordering of points can be different but
-			represent the same geometry structure.  To verify the order of points is consistent, use 
-			ST_OrderingEquals.</para>
-
-            <para>Performed by the GEOS module</para>
-
-            <para>OGC SPEC s2.1.1.2</para>
-          </listitem>
-        </varlistentry>
-
         <varlistentry>
           <term>ST_Touches(A geometry, B geometry)</term>
 
@@ -2652,17 +2635,6 @@ WHERE n*100.00/length &lt; 1;
         </listitem>
       </varlistentry>
 
-      <varlistentry>
-        <term>ST_Equals</term>
-
-        <listitem>
-          <para>Test if an ST_Geometry value as spatially equal to another
-          ST_Geometry value.</para>
-
-          <para>SQL-MM 3: 5.1.24</para>
-        </listitem>
-      </varlistentry>
-
       <varlistentry>
         <term>ST_ExteriorRing</term>
 
diff --git a/doc/reference_new.xml b/doc/reference_new.xml
index 10bf7c64b..5304b3ef8 100644
--- a/doc/reference_new.xml
+++ b/doc/reference_new.xml
@@ -1332,6 +1332,14 @@ SELECT DISTINCT ON (s.gid) s.gid, s.school_name, s.the_geom, h.hospital_name
 	FROM schools s 
 		LEFT JOIN hospitals h ON ST_DWithin(s.the_geom, h.the_geom, 3000)
 	ORDER BY s.gid, ST_Distance(s.the_geom, h.the_geom);
+	
+--The schools with no close hospitals
+--Find all schools with no hospital within 3000 units
+--away from the school.  Units is in units of spatial ref (e.g. meters, feet, degrees)
+SELECT s.gid, s.school_name
+	FROM schools s 
+		LEFT JOIN hospitals h ON ST_DWithin(s.the_geom, h.the_geom, 3000)
+	WHERE h.gid IS NULL;
 			  </programlisting>
       </refsection>
       
@@ -1377,6 +1385,14 @@ SELECT DISTINCT ON (s.gid) s.gid, s.school_name, s.the_geom, h.hospital_name
 		  <ulink url="http://www.opengeospatial.org/standards/sfs">OpenGIS Simple
 		  Features Implementation Specification for SQL OGC SPEC s2.1.1.2</ulink>
 		</para>
+		
+		<para><inlinemediaobject>
+        <imageobject>
+          <imagedata fileref="images/check.png" />
+        </imageobject>
+      </inlinemediaobject> This method implements the SQL/MM specification:
+	  			SQL-MM 3: 5.1.24
+		</para>
 	
 	  </refsection>