[GRASS-user] postgis back-end

[Hamish]

Hi,

it is worth noting that GRASS stores geometric features in its own native
(topological) format, and mostly will use a Postgres database to just
store the associated attributes. However v.external may allow you to
access (non-topological) PostGIS simple features directly on-the-fly by
passing it through OGR. But I'm not an expert on that. Also GRASS 7 now
lets you communicate with external datasets directly from modules; I'm
also no expert there either but hopefully someone else can explain it.

maybe in need of an update, but see  http://grass.osgeo.org/wiki/PostGIS

Also maybe search for some earlier tutorials by Otto?


Hamish