[GRASS-user] [snap pour point for r.water.outlet]

[Helmut Kudrnovsky]

Ang Sherpa wrote
> Thanks Johannes,
> 
> r.stream.snap does not have attribute table attached and throws an error:
> "DB connection for vector map XXX not defined."
> 
> With this case, it won't be of any good use as coordinate of new snaped
> point cannot be extracted for feeding into "r.water.outlet" - coordinate
> field.

that's not an error, just a warning.

there are different ways to get the point coordinates:

e.g.

v.report map=mysampleoutlet_snapped at user1 option=coor                           
cat|x|y|z
1|635555|219665|0

or 

v.db.addtable - Creates and connects a new attribute table to a given layer
of an existing vector map. 
v.to.db - Populates attribute values from vector features. 

v.to.db option=coor: point coordinates, X,Y or X,Y,Z

and some others ....





-----
best regards
Helmut
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