Changes between Version 32 and Version 33 of Grass7/VectorLib/PostGISInterface

Timestamp:

Nov 29, 2012, 12:29:36 AM (11 years ago)

Author:

martinl

Comment:

--

Grass7/VectorLib/PostGISInterface

@@ -47 +47 @@
 v.info map=urbanarea
 ...
-|----------------------------------------------------------------------------|
+ |----------------------------------------------------------------------------|
  | Map format:      PostGIS (PostgreSQL)                                      |
  | DB table:        public.urbanarea                                          |
@@ -54 +54 @@
  | Feature type:    polygon                                                   |
  | Topology:        pseudo (simple features)                                  |
+ |----------------------------------------------------------------------------|
+...
+}}}
+
+'''Write example:'''
+
+{{{
+# define output vector format
+v.external.out dsn=PG:dbname=grass format=PostgreSQL options=topology=YES
+# create random points map
+v.random out=test_points n=1000
+# access created external data
+v.info test_points
+...
+ |----------------------------------------------------------------------------|
+ | Map format:      PostGIS (PostgreSQL)                                      |
+ | DB table:        public.test_points                                        |
+ | DB name:         grass                                                     |
+ | Geometry column: geom                                                      |
+ | Feature type:    point                                                     |
+ | Topology:        pseudo (simple features)                                  |
+ |----------------------------------------------------------------------------|
+...
+}}}
+
+For more examples see [http://grasswiki.osgeo.org/wiki/PostGIS wiki page] from GRASS Wiki.
+
+== Topological access ==
+
+'''Export GRASS vector data to PostGIS as topological elements:'''
+
+{{{
+v.out.postgis -l input=urbanarea dsn=PG:dbname=grass
+}}}
+
+'''Read example:'''
+
+{{{
+# create a link to PostGIS table
+v.external dsn=PG:dbname=grass layer=urbanarea
+# access data as normal vector map in GRASS
+v.info map=urbanarea
+...
+ |----------------------------------------------------------------------------|
+ | Map format:      PostGIS (PostgreSQL)                                      |
+ | DB table:        public.urbanarea                                          |
+ | DB name:         grass                                                     |
+ | Geometry column: geom                                                      |
+ | Feature type:    polygon                                                   |
+ | Topology:        PostGIS (schema: topo_urbanarea)                          |
+ | Topology column: topo                                                      |
  |----------------------------------------------------------------------------|
 ...
@@ -79 +130 @@
 }}}
 
-For more examples see [http://grasswiki.osgeo.org/wiki/PostGIS wiki page] from GRASS Wiki.
-== Topological access ==
-
-For more information see [wiki:Grass7/VectorLib/PostGISEditing PostGIS Topology] page.supports 
+For more information see [wiki:Grass7/VectorLib/PostGISEditing PostGIS Topology editing] page and [http://grasswiki.osgeo.org/wiki/PostGIS_Topology wiki page] from GRASS Wiki.