[postgis-tickets] r15617 - #3499, Clarify distance units in docs for ST_ClusterWithin

[Daniel Baston]

Author: dbaston
Date: 2017-09-03 16:58:09 -0700 (Sun, 03 Sep 2017)
New Revision: 15617

Modified:
   trunk/doc/reference_measure.xml
Log:
#3499, Clarify distance units in docs for ST_ClusterWithin

Modified: trunk/doc/reference_measure.xml
===================================================================
--- trunk/doc/reference_measure.xml	2017-09-03 23:38:36 UTC (rev 15616)
+++ trunk/doc/reference_measure.xml	2017-09-03 23:58:09 UTC (rev 15617)
@@ -1100,7 +1100,7 @@
 		  <itemizedlist>
               <listitem>
                   <para>
-                      A "core" geometry, that is within <varname>eps</varname> distance of at least <varname>minpoints</varname> input geometries (including itself) or
+                      A "core" geometry, that is within <varname>eps</varname> distance (Cartesian) of at least <varname>minpoints</varname> input geometries (including itself) or
                   </para>
 			  </listitem>
 			  <listitem>
@@ -1392,7 +1392,7 @@
       <refsection>
         <title>Description</title>
 
-        <para>ST_ClusterWithin is an aggregate function that returns an array of GeometryCollections, where each GeometryCollection represents a set of geometries separated by no more than the specified distance.</para>
+        <para>ST_ClusterWithin is an aggregate function that returns an array of GeometryCollections, where each GeometryCollection represents a set of geometries separated by no more than the specified distance.  (Distances are Cartesian distances in the units of the SRID.)</para>
 
         <para>Availability: 2.2.0 - requires GEOS</para>
       </refsection>