document ST_HasNoBand, fix note on ST_Value so appears in right place in what's new...

git-svn-id: http://svn.osgeo.org/postgis/trunk@6765 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/doc/reference_raster.xml b/doc/reference_raster.xml
index cb138e37794ac5668be708a450997c5d37322872..7ef838de34779b7854707d45619835fae11598a3 100644 (file)
--- a/doc/reference_raster.xml
+++ b/doc/reference_raster.xml
@@ -1818,6 +1818,55 @@ WHERE rid = 2;
                        </refsection>
                </refentry>
                
+               <refentry id="RT_ST_HasNoBand">
+                       <refnamediv>
+                               <refname>ST_HasNoBand</refname>
+                               <refpurpose>Returns true if there is no band with given band number.  If no band number is specified, then band number 1 is assumed.</refpurpose>
+                       </refnamediv>
+               
+                       <refsynopsisdiv>
+                               <funcsynopsis>
+                               <funcprototype>
+                                       <funcdef>boolean <function>ST_HasNoBand</function></funcdef>
+                                       <paramdef><type>raster </type> <parameter>rast</parameter></paramdef>
+                                 </funcprototype>
+                                 <funcprototype>
+                                       <funcdef>boolean <function>ST_HasNoBand</function></funcdef>
+                                       <paramdef><type>raster </type> <parameter>rast</parameter></paramdef>
+                                       <paramdef><type>integer </type> <parameter>bandnum</parameter></paramdef>
+                                 </funcprototype>
+                               </funcsynopsis>
+                       </refsynopsisdiv>
+               
+                       <refsection>
+                               <title>Description</title>
+                               
+                               <para>Returns true if there is no band with given band number.  If no band number is specified, then band number 1 is assumed.</para>
+                               
+                               <para>Availability: 2.0.0</para>
+                               </refsection>
+                               
+                               <refsection>
+                                       <title>Examples</title>
+                               
+                                       <programlisting>SELECT rid, ST_HasNoBand(rast) As hb1, ST_HasNoBand(rast,2) as hb2, 
+ST_HasNoBand(rast,4) as hb4, ST_NumBands(rast) As numbands 
+FROM dummy_rast;
+
+ rid | hb1 | hb2 | hb4 | numbands
+-----+-----+-----+-----+----------
+   1 | t   | t   | t   |        0
+   2 | f   | f   | t   |        3
+                               </programlisting>
+                       
+                       </refsection>
+
+                       <refsection>
+                               <title>See Also</title>
+                               <para><xref linkend="RT_ST_NumBands" /></para>
+                       </refsection>
+               </refentry>
+               
        </sect1>
        
        <sect1 id="Raster_Pixel_Accessors">
@@ -1950,7 +1999,7 @@ WHERE rid=2;
                                <para>Returns the value of a given band in a given columnx, rowy pixel or at a given geometry point. Band numbers start at 1 and band is assumed to be 1 if not specified.      
                                If <varname>hasnodata</varname> is set to true, then only non <varname>nodata</varname> pixels are considered.  If <varname>hasnodata</varname> is set to false, then all pixels are considered.</para>
 
-                               <para>Changed: 2.0.0 hasnodata optional argument was added.</para>
+                               <para>Enahnced: 2.0.0 hasnodata optional argument was added.</para>
                                </refsection>
                                
                                <refsection>