[GRASSLIST:4456] Re: Several fields in raster maps.

Stephan Holl sholl at gmx.net
Wed Sep 11 07:59:16 EDT 2002


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At Wed, 11 Sep 2002 10:59:31 +0200 andres javier garcia garcia wrote:

Hello andres

> But what I would like is to link the different attributes
> (that I've got in different tables in PostgreSQL) to the same table.
> Is this possible? Perhaps through SQL? Thanks
Yes, this is possible, if your PG-tables have fields on which you can
join them.
I used that with an distinct ID-field in all table, which is reffered to
a raster-map  with the same ID as raster-value.
You you could use a SQL-statement to join your tables an make _one_
table with all attributes included.
d.what.r.pg will querry your attributes from PG-table.
with d.rast.pg you can reclass your maps and create maps with different
attributes.

hth

Stephan

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