From 1981ff1d1542724259507f4f9c39604e9b9843d0 Mon Sep 17 00:00:00 2001
From: Regina Obe <lr@pcorp.us>
Date: Thu, 10 Sep 2009 05:27:19 +0000
Subject: [PATCH] first attempt at figure for st_linecrossingdirection.  Also
 query correction.

git-svn-id: http://svn.osgeo.org/postgis/trunk@4470 b70326c6-7e19-0410-871a-916f4a2858ee
---
 doc/html/image_src/Makefile.in                    |  1 +
 doc/html/image_src/st_linecrossingdirection01.wkt |  6 ++++++
 doc/reference.xml                                 | 15 ++++++++++++---
 3 files changed, 19 insertions(+), 3 deletions(-)
 create mode 100644 doc/html/image_src/st_linecrossingdirection01.wkt

diff --git a/doc/html/image_src/Makefile.in b/doc/html/image_src/Makefile.in
index 957f02655..0df875203 100644
--- a/doc/html/image_src/Makefile.in
+++ b/doc/html/image_src/Makefile.in
@@ -58,6 +58,7 @@ IMAGES= \
 	../images/st_isvalid06.png \
 	../images/st_isvalid07.png \
 	../images/st_isvalid08.png \
+	../images/st_line_crossingdirection01.png \
 	../images/st_line_interpolate_point01.png \
 	../images/st_line_substring01.png \
 	../images/st_minimumboundingcircle01.png \
diff --git a/doc/html/image_src/st_linecrossingdirection01.wkt b/doc/html/image_src/st_linecrossingdirection01.wkt
new file mode 100644
index 000000000..9b6f98eb7
--- /dev/null
+++ b/doc/html/image_src/st_linecrossingdirection01.wkt
@@ -0,0 +1,6 @@
+Style2;LINESTRING (49.55 194.88, 49.85 194.24, 50.25 194.31)
+Style2;POINT(49.55 194.88)
+Style2;POLYGON((50.253329086454286 194.24232297330548, 50.24206897193198 194.38332142018575, 50.36088698569539 194.32123285218572, 50.253329086454286 194.24232297330548))
+Style1-thinline;LINESTRING (49.61 193.88, 50.25 194.82)
+Style1-thinline;POINT(49.61 193.88)
+Style1-thinline;POLYGON((50.267397967078914 194.71401807841175, 50.16331710842844 194.80980182997902, 50.29267606288439 194.84500085799175, 50.267397967078914 194.71401807841175))
diff --git a/doc/reference.xml b/doc/reference.xml
index 9098920d0..3ee885d0c 100644
--- a/doc/reference.xml
+++ b/doc/reference.xml
@@ -9677,9 +9677,18 @@ WHERE ST_Crosses(roads.the_geom, highways.the_geom);</programlisting>
 	<refsection>
 	  <title>Examples</title>
   <!-- TODO: We really badly need diagrams here and more examples -->
-	  <programlisting>SELECT ST_LineCrossingDirection(foo.line1, foo.line2) As linecrossleft , ST_CrossingDirection(foo.line2, foo.line1) As linecrossright
-FROM (SELECT ST_GeomFromText('LINESTRING(744589 2923929,744521 2923861)') As line1,
-ST_GeomFromText('LINESTRING(744753 2924117,744563 2923902)') As line2) As foo;
+			<informalfigure>
+			  <mediaobject>
+				<imageobject>
+				  <imagedata fileref="images/st_linecrossingdirection01.png" />
+				</imageobject>
+				<caption><para>Line 1 fat line, Line 2 thin line, point is start point,
+					triangle are end points. Query below. </para></caption>
+			  </mediaobject>
+			</informalfigure>
+	  <programlisting>SELECT ST_LineCrossingDirection(foo.line1, foo.line2) As linecrossleft , ST_LineCrossingDirection(foo.line2, foo.line1) As linecrossright
+FROM (SELECT ST_GeomFromText('LINESTRING (49.55 194.88, 49.85 194.24, 50.25 194.31)') As line1,
+ST_GeomFromText('LINESTRING (49.61 193.88, 50.25 194.82)') As line2) As foo;
 
  linecrossleft | linecrossright
 ---------------+----------------
-- 
2.50.0