From: Daniel Baston <dbaston@gmail.com>
Date: Mon, 20 Mar 2017 13:24:07 +0000 (+0000)
Subject: ST_IsPolygonCW doc clarifications
X-Git-Tag: 2.4.0alpha~144
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c4254d2a358cf6252022f81f39d290d5c7b7ea18;p=postgis

ST_IsPolygonCW doc clarifications

git-svn-id: http://svn.osgeo.org/postgis/trunk@15340 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/doc/reference_accessor.xml b/doc/reference_accessor.xml
index 66ed9dcdb..7083235fa 100644
--- a/doc/reference_accessor.xml
+++ b/doc/reference_accessor.xml
@@ -901,13 +901,13 @@ FROM (SELECT ST_BuildArea(
 			<title>Description</title>
 
 			<para>
-				Returns true for (Multi)Polygons that use a counter-clockwise 
+				Returns true if all polygonal components of the input geometry use a counter-clockwise 
 				orientation for their exterior ring, and a clockwise direction 
 				for all interior rings.
 			</para>
 
 			<para>
-				Returns true for all non-polygonal geometries.
+				Returns true if the geometry has no polygonal components.
 			</para>
 
 			<note>
@@ -919,6 +919,13 @@ FROM (SELECT ST_BuildArea(
 				</para>
 			</note>
 
+			<note>
+				<para>
+					This function does not consider closed linestrings as polygons,
+					and does not check their orientation.
+				</para>
+			</note>
+
 			<para>&Z_support;</para>
 			<para>&M_support;</para>
 
@@ -963,13 +970,13 @@ FROM (SELECT ST_BuildArea(
 			<title>Description</title>
 
 			<para>
-				Returns true for (Multi)Polygons that use a clockwise 
+				Returns true if all polygonal components of the input geometry use a clockwise 
 				orientation for their exterior ring, and a counter-clockwise direction 
 				for all interior rings.
 			</para>
 
 			<para>
-				Returns true for all non-polygonal geometries.
+				Returns true if the geometry has no polygonal components.
 			</para>
 
 			<note>
@@ -981,6 +988,13 @@ FROM (SELECT ST_BuildArea(
 				</para>
 			</note>
 
+			<note>
+				<para>
+					This function does not consider closed linestrings as polygons,
+					and does not check their orientation.
+				</para>
+			</note>
+
 			<para>&Z_support;</para>
 			<para>&M_support;</para>
 		</refsection>