DESCRIPTION
v.db.reclass allows user to create a new vector map based on the reclassification
of an existing vector map.
Rules file may contain on each row either pair:
keyword value
(separated by space) or comment beginning by #(hash).
Definition of new category begins with kyeword cat followed by new category value.
Keyword where specifies SQL where condition.
EXAMPLE
v.db.reclass input=land output=land_u type=area
rules=land.rcl
the rules file contains :
# land reclass file
cat 1
where use = 'E13' and owner = 'Jara Cimrman'
cat 2
where use = 'E14'
Produces a new vector area file land_u containing 'area'
boundaries from land with area category values selected
from database by SQL select statement: select id from tland where
use = 'E13' and owner = 'Jara Cimrman' changed to category 1;
values selected from database by SQL select statement: select id from tland where
use = 'E14' changed to category 2.
SEE ALSO
v.extract
AUTHOR
R.L. Glenn, USDA, SCS, NHQ-CGIS
from v.reclass to v.db.reclass and later to v.reclass in 5.7 rewritten by Radim Blazek
Last changed: $Date: 2003/12/04 16:22:59 $