uhh how could we forget to mention the cool ST_Union(rast,unionarg) is new in PostGIS...

git-svn-id: http://svn.osgeo.org/postgis/trunk@11082 b70326c6-7e19-0410-871a-916f4a2858ee

diff --git a/doc/reference_raster.xml b/doc/reference_raster.xml
index 600de571677e109032115a43937cacded624ad27..c5595f21ccebbbc8f14b9b81d14717c7f4c689fd 100644 (file)
--- a/doc/reference_raster.xml
+++ b/doc/reference_raster.xml
@@ -10323,11 +10323,15 @@ UPDATE wind
                        <refsection>
                                <title>Description</title>
                                
-                               <para>Returns the union of a set of raster tiles into a single raster composed of at least one band.  If <varname>nband</varname> is not specified, band 1 is assumed for all function variants except <code>ST_Union(rast)</code>.  The resulting raster's extent is the extent of the whole set.  In the case of intersection, the resulting value is defined by <varname>uniontype</varname> which is one of the following: LAST (default), FIRST, MIN, MAX, COUNT, SUM, MEAN, RANGE.</para>
+                               <para>Returns the union of a set of raster tiles into a single raster composed of at least one band.  The resulting raster's extent is the extent of the whole set.  In the case of intersection, the resulting value is defined by <varname>uniontype</varname> which is one of the following: LAST (default), FIRST, MIN, MAX, COUNT, SUM, MEAN, RANGE.</para>
 
                                <para>Availability: 2.0.0 </para>
+                               <note><para>For variant ST_Union(rast,uniontype),  band 1 is assumed.</para></note>
                                <para>Enhanced: 2.1.0 Improved Speed (fully C-Based).</para>
-                               <note><para>Changed: 2.1.0 ST_Union(rast) (variant 1) now unions all bands of all input rasters.  Prior versions of ST_Union(rast) only unioned the first band of all input rasters. The other variants still only union 1 band and default to first band if not specified.</para></note>
+                               <para>Availability: 2.1.0 ST_Union(rast, unionarg) variant was introduced.</para>
+                               <para>Enhanced: 2.1.0 ST_Union(rast) (variant 1) now unions all bands of all input rasters, if no band is specified.  Prior versions of PostGIS assumed the first band.</para>
+                               
+                               
                        </refsection>
                                
                        <refsection>