[GRASS-user] How update vector layers?

GRASS GRASS user
1

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

2

Thybério,
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 !

Vincent

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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3

Now it works!!! :smiley:

The problem was that: the map “sugarcane” can´t be added to the input parameter, only the update map. A litlle detail, but that give me headache!

Markus and Vincent, because guys like you newbies avoid the temptation (and costs) of facilities of the ARCGI$.

Congratulations!

thyberio

2009/3/8 Vincent Bain <bain@toraval.fr>

Thybério,
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 !

Vincent

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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