PostGIS: Difference between revisions
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(link to Tutorial by Micha Silver) |
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You can link a GRASS layer to a PostgreSQL attribute table, though. {{cmd|v.db.connect}} | You can link a GRASS layer to a PostgreSQL attribute table, though. {{cmd|v.db.connect}} | ||
== See also == | |||
* [http://www.surfaces.co.il/?p=645 Tutorial by Micha Silver] | |||
[[Category: FAQ]] | [[Category: FAQ]] |
Revision as of 15:36, 3 May 2010
Help pages
- GRASS databaseintro help page
- GRASS sql help page
- grass-pg help page
- grass-odbc help page
Link to external dataset
Import into GRASS
There is a fundamental difference between the PostGIS format which is non-topological and the internal GRASS format which is topological and which, thus, does not really allow for overlapping polygons. You can digitize them, but they are not really useful...
You cannot directly process a PostGIS table in GRASS. GRASS has its own internal vector format.
You can link a GRASS layer to a PostgreSQL attribute table, though. v.db.connect