typo in ST_Y definition. Also added common use-case example of ST_Centroid used...

git-svn-id: http://svn.osgeo.org/postgis/trunk@3144 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/doc/reference_new.xml b/doc/reference_new.xml
index 4659c5de55beaa9c8c31ebd92b2171fb1a7d0462..88768273b81d18b55ef61b88ca5e520a4679fe9b 100644 (file)
--- a/doc/reference_new.xml
+++ b/doc/reference_new.xml
@@ -3393,6 +3393,12 @@ Line[ZB] with 2 points : Polygon[ZB] with 1 rings
     1
 (1 row)
 
+SELECT ST_Y(ST_Centroid(ST_GeomFromEWKT('LINESTRING(1 2 3 4, 1 1 1 1)')));
+ st_y 
+------
+  1.5
+(1 row)
+
                </programlisting>
          </refsection>
        
@@ -3400,7 +3406,7 @@ Line[ZB] with 2 points : Polygon[ZB] with 1 rings
          <refsection>
            <title>See Also</title>
        
-           <para><xref linkend="ST_GeomFromEWKT" />, <xref linkend="ST_M" />, <xref linkend="ST_Y" />, <xref linkend="ST_Z" /></para>
+           <para><xref linkend="ST_Centroid" />, <xref linkend="ST_GeomFromEWKT" />, <xref linkend="ST_M" />, <xref linkend="ST_Y" />, <xref linkend="ST_Z" /></para>
          </refsection>
        </refentry>
                
@@ -3415,7 +3421,7 @@ Line[ZB] with 2 points : Polygon[ZB] with 1 rings
          <refsynopsisdiv>
            <funcsynopsis>
              <funcprototype>
-               <funcdef>float <function>ST_X</function></funcdef>
+               <funcdef>float <function>ST_Y</function></funcdef>
                <paramdef><type>geometry </type> <parameter>a_point</parameter></paramdef>
              </funcprototype>
            </funcsynopsis>
@@ -3461,6 +3467,13 @@ Line[ZB] with 2 points : Polygon[ZB] with 1 rings
     2
 (1 row)
 
+SELECT ST_Y(ST_Centroid(ST_GeomFromEWKT('LINESTRING(1 2 3 4, 1 1 1 1)')));
+ st_y 
+------
+  1.5
+(1 row)
+
+
                </programlisting>
          </refsection>
        
@@ -3468,7 +3481,7 @@ Line[ZB] with 2 points : Polygon[ZB] with 1 rings
          <refsection>
            <title>See Also</title>
        
-           <para><xref linkend="ST_GeomFromEWKT" />, <xref linkend="ST_M" />, <xref linkend="ST_X" />, <xref linkend="ST_Z" /></para>
+           <para><xref linkend="ST_Centroid" />, <xref linkend="ST_GeomFromEWKT" />, <xref linkend="ST_M" />, <xref linkend="ST_X" />, <xref linkend="ST_Z" /></para>
          </refsection>
        </refentry>