On Mon, 11 Jan 2010, jason kirtland wrote:
The theme for January is: Geographic Information.
Ah, too bad I cannot make it.
Webb Sprauge will talk about how to incorporate geographic data into relational databases using PostGIS and PostgreSQL. He will cover making a connection with psycopg2, modeling using geographic data types, and associating geographic data with non-geographic attributes.
As an aside, one aspect of using a dbms (and both PostGIS and postgres are excellent products) is that they are not topologically correct. That is, a common boundary between two polygons is stored twice, once for each polygon, rather than as a single arc with identification for the areas to each side. Folks who are interested in spatial analyses more than just computerized cartography ought to take a look at GRASS (Geographic Resources Analysis Support System) <http://grass.osgeo.org/>. The GUI is now written in Python using wxPython and modules can be written in Python or C. Rich _______________________________________________ Portland mailing list [email protected] http://mail.python.org/mailman/listinfo/portland
