[GRASS-user] exponentiation with v.db.update

Paolo Cavallini cavallini at faunalia.it
Tue Jun 9 14:05:20 EDT 2009

A. Marcia BARBOSA ha scritto:
>> why not using sqlite backend? dbf is very limited for any serious use.
> It may seem quite simple for some, but to me all these things are a
> complete mystery... I'm actually very surprised I became able to
> handle GRASS! I'm planning on switching all my databases to PostgreSQL
> within this year (after taking a course, of course)

It is not so bad:

To migrate a GRASS database table (or a GRASS vector map) to a different
DBMI engine, the best solution is to create a new MAPSET, define the
DBMI settings accordingly with db.connect and if needed, db.login. Then
the table of interest can be copied over with db.copy from the original
MAPSET. Likewise, a vector map including its table(s) are copied from
the original MAPSET to the current MAPSET with g.copy.

PostgreSQL might be overkill for personal use.
All the best.
Paolo Cavallini: http://www.faunalia.it/pc

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