[GRASS-user] v.external and attribute table::strange behaviour..Bug?

Moritz Lennert mlennert at club.worldonline.be
Mon Feb 5 08:40:36 EST 2007

On 05/02/07 14:19, Wolfgang Qual wrote:
> Hi list, I observed a strange thing about v.external. When I crate a
> link to a shapefile using v.external, it is possible to list all
> attribute values using the v.db.select-command (on the command line).
> However, I was not successful in trying to get the same result inside
> of QGIS or directly inside the database-backend (I am using
> sqlite-/sqlitebrowser).
> 1) sqlitebrowser does not even list the table of the theme created
> with v.external

v.external does not import any data, it just links to it, so any 
attribute data is in the .dbf file linked to your shapefile, and not in 
your sqlite database.

> 2) in QGIS (0.8.0 R2), I can load some (only line and polygon) layers
> into the map (the geometry is shown), but I do not have access to the
> attributes - only cat-values are shown.

I guess QGIS can only work with "real" GRASS data, i.e. data imported 
into GRASS, and not data which you only link to with v.external.


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