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v: Uploads vector values at positions of vector points to the table.
NAMEv.what.vect - Uploads vector values at positions of vector points to the table.
KEYWORDSvector, database, attribute table
v.what.vect vector=name [layer=integer] column=string qvector=name [qlayer=integer] qcolumn=string [--verbose] [--quiet]
Points vector map to modify
Layer in the vector to be modified
Column to be updated with the query result
Vector map to be queried
Layer of the query vector containg data
Column to be queried
DESCRIPTIONv.what.vect transfers attributes from the qvector's map attribute table into the attribute table of points present in the vector map. The script is based on v.distance.
NOTESThe upload column, into which the query results are stored, must be present in the vector map. Use v.db.addcol to add one if needed.
This module only uploads attributes which exist at the exact positions of the input's vector points. For a "nearest feature" fit, use v.distance instead.
In case of a multipoint input vector map, with several points having the same category number, it can happen, that the query result is NULL, if the same category number falls into different qvector polygons.
EXAMPLEIn this example, the 'archsites' point map in the Spearfish location is copied to the current mapset, a new attribute column is added and the owner names from the 'fields' polygon map are transferred to the 'myarchsites' map at points' locations:
v.db.addcol myarchsites col="owner varchar(25)"
v.what.vect myarchsites qvect=fields column=owner qcolumn=label
SEE ALSOv.db.addcol, v.db.select, v.distance, v.rast.stats, v.what.rast
Last changed: $Date: 2007-06-10 13:23:21 +0200 (Sun, 10 Jun 2007) $
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