[GRASS-user] How update vector layers?

Vincent Bain bain at toraval.fr
Sun Mar 8 06:56:15 EDT 2009

as Markus said, you cannot proceed this way because your output map is
already involved in the patch process. So using the -a option, you must
not include the target map.

Try : v.patch -a -e --overwrite input=sugarcane_update output=sugarcane
To work safely regarding your database structure, I would suggest you to
test on a copy of map sugarcane (again : particularly be sure of
non-overlaping cat values...)

Keep trying, you'll get it !


Le samedi 07 mars 2009 à 21:46 -0300, Thybério Luna Freire a écrit :
> The great problem in create a new map is that there is a database with
> rules
> of integrity. If the table sugarcane is linked to other table by
> primary/foreign keys i can't simply delete it and put the new table in
> your
> place. This is my problem. I have to mantain the table sugarcane and
> keep
> updating it, when necessary.
> thyberio
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