[mapserver-commits] r10774 - in trunk/docs/en: images input/vector
svn at osgeo.org
svn at osgeo.org
Wed Dec 1 13:39:49 EST 2010
Author: jmckenna
Date: 2010-12-01 10:39:49 -0800 (Wed, 01 Dec 2010)
New Revision: 10774
Added:
trunk/docs/en/images/circularstring.png
trunk/docs/en/images/compoundcurve.png
trunk/docs/en/images/curvepolygon.png
trunk/docs/en/images/multicurve.png
trunk/docs/en/images/multisurface.png
Modified:
trunk/docs/en/input/vector/postgis.txt
Log:
document upcoming curvepolygon support (ticket#3621)
Added: trunk/docs/en/images/circularstring.png
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Property changes on: trunk/docs/en/images/circularstring.png
___________________________________________________________________
Added: svn:mime-type
+ application/octet-stream
Added: trunk/docs/en/images/compoundcurve.png
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(Binary files differ)
Property changes on: trunk/docs/en/images/compoundcurve.png
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Added: svn:mime-type
+ application/octet-stream
Added: trunk/docs/en/images/curvepolygon.png
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Property changes on: trunk/docs/en/images/curvepolygon.png
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Added: svn:mime-type
+ application/octet-stream
Added: trunk/docs/en/images/multicurve.png
===================================================================
(Binary files differ)
Property changes on: trunk/docs/en/images/multicurve.png
___________________________________________________________________
Added: svn:mime-type
+ application/octet-stream
Added: trunk/docs/en/images/multisurface.png
===================================================================
(Binary files differ)
Property changes on: trunk/docs/en/images/multisurface.png
___________________________________________________________________
Added: svn:mime-type
+ application/octet-stream
Modified: trunk/docs/en/input/vector/postgis.txt
===================================================================
--- trunk/docs/en/input/vector/postgis.txt 2010-12-01 06:26:22 UTC (rev 10773)
+++ trunk/docs/en/input/vector/postgis.txt 2010-12-01 18:39:49 UTC (rev 10774)
@@ -4,10 +4,14 @@
PostGIS/PostgreSQL
*****************************************************************************
+.. contents:: Table of Contents
+ :depth: 3
+ :backlinks: top
+
PostGIS/PostgreSQL
------------------
-`PostGIS <http://postgis.refractions.net/>`_ spatially enables the
+`PostGIS <http://postgis.org/>`_ spatially enables the
Open Source `PostgreSQL`_ database.
.. _`PostgreSQL`: http://www.postgresql.org/
@@ -140,4 +144,205 @@
END
END
-For more info about PostGIS and MapServer see the PostGIS docs: http://postgis.refractions.net/docs/
+For more info about PostGIS and MapServer see the PostGIS docs: http://postgis.org/documentation/
+
+Support for SQL/MM Curves
+-------------------------
+
+PostGIS is able to store circular interpolated curves, as part of the SQL Multimedia Applications
+Spatial specification (read about the `SQL/MM specification <http://subs.emis.de/LNI/Proceedings/Proceedings26/GI-Proceedings.26-17.pdf>`__).
+For more information about PostGIS' support, see the *SQL-MM Part 3* section in the PostGIS documentation, such
+as `here <http://www.postgis.org/documentation/manual-1.5/ch04.html#SQL_MM_Part3>`__.
+
+As of MapServer 6.0, the PostGIS features CircularString, CompoundCurve, CurvePolygon, MultiCurve, and MultiSurface can be
+drawn through MapServer directly.
+
+Example#1: CircularString in MapServer
+######################################
+
+The following is the Well Known Text of the feature loading into PostGIS:
+
+::
+
+ INSERT INTO test ( g, id ) VALUES ( ST_GeomFromText('CIRCULARSTRING(0 0, 4 0, 4 4, 0 4, 0 0)', -1), 2);
+
+An example MapServer layer might look like:
+
+::
+
+ LAYER
+ NAME "curves_poly"
+ STATUS DEFAULT
+ TYPE POLYGON
+ CONNECTIONTYPE postgis
+ CONNECTION "user=postgres password=postgres dbname=curves host=localhost port=5432"
+ DATA "g from test using SRID=-1 using unique id"
+ CLASS
+ STYLE
+ COLOR 128 128 128
+ ANTIALIAS true
+ END
+ END
+ END
+
+And testing with :ref:`shp2img` should produce a map image of:
+
+.. image:: ../../images/circularstring.png
+
+Example#2: CompoundCurve in MapServer
+#####################################
+
+The following is the Well Known Text of the feature loading into PostGIS:
+
+::
+
+ INSERT INTO test ( g, id ) VALUES ( ST_GeomFromText('COMPOUNDCURVE(CIRCULARSTRING(0 0, 1 1, 1 0),(1 0, 0 1))', -1), 3);
+
+An example MapServer layer might look like:
+
+::
+
+ LAYER
+ NAME "curves_poly"
+ STATUS DEFAULT
+ TYPE POLYGON
+ CONNECTIONTYPE postgis
+ CONNECTION "user=postgres password=postgres dbname=curves host=localhost port=5432"
+ DATA "g from test using SRID=-1 using unique id"
+ CLASS
+ STYLE
+ COLOR 128 128 128
+ ANTIALIAS true
+ END
+ END
+ END
+
+And testing with :ref:`shp2img` should produce a map image of:
+
+.. image:: ../../images/compoundcurve.png
+
+Example#3: CurvePolygon in MapServer
+####################################
+
+The following is the Well Known Text of the feature loading into PostGIS:
+
+::
+
+ INSERT INTO test ( g, id ) VALUES ( ST_GeomFromText('CURVEPOLYGON(CIRCULARSTRING(0 0, 4 0, 4 4, 0 4, 0 0),(1 1, 3 3, 3 1, 1 1))', -1), 4);
+
+An example MapServer layer might look like:
+
+::
+
+ LAYER
+ NAME "curves_poly"
+ STATUS DEFAULT
+ TYPE POLYGON
+ CONNECTIONTYPE postgis
+ CONNECTION "user=postgres password=postgres dbname=curves host=localhost port=5432"
+ DATA "g from test using SRID=-1 using unique id"
+ CLASS
+ STYLE
+ COLOR 128 128 128
+ ANTIALIAS true
+ END
+ END
+ END
+
+And testing with :ref:`shp2img` should produce a map image of:
+
+.. image:: ../../images/curvepolygon.png
+
+Example#4: MultiCurve in MapServer
+##################################
+
+The following is the Well Known Text of the feature loading into PostGIS:
+
+::
+
+ INSERT INTO test ( g, id ) VALUES ( ST_GeomFromText('MULTICURVE((0 0, 5 5),CIRCULARSTRING(4 0, 4 4, 8 4))', -1), 6);
+
+An example MapServer layer might look like:
+
+::
+
+ LAYER
+ NAME "curves_poly"
+ STATUS DEFAULT
+ TYPE POLYGON
+ CONNECTIONTYPE postgis
+ CONNECTION "user=postgres password=postgres dbname=curves host=localhost port=5432"
+ DATA "g from test using SRID=-1 using unique id"
+ CLASS
+ STYLE
+ COLOR 128 128 128
+ ANTIALIAS true
+ END
+ END
+ END
+
+And testing with :ref:`shp2img` should produce a map image of:
+
+.. image:: ../../images/multicurve.png
+
+Example#5: MultiSurface in MapServer
+####################################
+
+The following is the Well Known Text of the feature loading into PostGIS:
+
+::
+
+ INSERT INTO test ( g, id ) VALUES ( ST_GeomFromText('MULTISURFACE(CURVEPOLYGON(CIRCULARSTRING(0 0, 4 0, 4 4, 0 4, 0 0),(1 1, 3 3, 3 1, 1 1)),((10 10, 14 12, 11 10, 10 10),(11 11, 11.5 11, 11 11.5, 11 11)))', -1), 7);
+
+An example MapServer layer might look like:
+
+::
+
+ LAYER
+ NAME "curves_poly"
+ STATUS DEFAULT
+ TYPE POLYGON
+ CONNECTIONTYPE postgis
+ CONNECTION "user=postgres password=postgres dbname=curves host=localhost port=5432"
+ DATA "g from test using SRID=-1 using unique id"
+ CLASS
+ STYLE
+ COLOR 128 128 128
+ ANTIALIAS true
+ END
+ END
+ END
+
+And testing with :ref:`shp2img` should produce a map image of:
+
+.. image:: ../../images/multisurface.png
+
+Using MapServer < 6.0
+#####################
+
+If you cannot upgrade to MapServer 6.0, then you can use the PostGIS function *ST_CurveToLine()* in your
+MapServer LAYER to draw the curves (note that this is much slower however):
+
+::
+
+ LAYER
+ NAME "curves_poly"
+ STATUS DEFAULT
+ TYPE POLYGON
+ CONNECTIONTYPE postgis
+ CONNECTION "user=postgres password=postgres dbname=curves host=localhost port=5432"
+ DATA "wkb_geometry from (select c.id, ST_CurveToLine(c.g) as wkb_geometry from c) as subquery using unique id using SRID=-1"
+ CLASS
+ STYLE
+ COLOR 128 128 128
+ ANTIALIAS true
+ END
+ END
+ END
+
+
+
+
+
+
+
\ No newline at end of file
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