If topology info is not available (i.e., vector map cannot be open on level 2), vector map extends and number of features need to be counted on the fly which may take some time.
v.info map=geology +----------------------------------------------------------------------------+ | Name: geology | | Mapset: PERMANENT | | Location: nc_spm_08 | | Database: /home/martin/grassdata | | Title: North Carolina geology map (polygon map) | | Map scale: 1:1 | | Map format: native | | Name of creator: helena | | Organization: NC OneMap | | Source date: Mon Nov 6 15:48:53 2006 | |----------------------------------------------------------------------------| | Type of map: vector (level: 2) | | | | Number of points: 0 Number of centroids: 1832 | | Number of lines: 0 Number of boundaries: 3649 | | Number of areas: 1832 Number of islands: 907 | | | | Map is 3D: No | | Number of dblinks: 1 | | | | Projection: Lambert Conformal Conic | | | | N: 318117.43741634 S: 10875.82723209 | | E: 930172.31282271 W: 123971.19498978 | | | | Digitization threshold: 0 | | Comment: | | | +----------------------------------------------------------------------------+
v.info -h map=geology COMMAND: v.in.ogr dsn="geol.shp" output="geology" min_area=0.0001 snap=-1 GISDBASE: /bigdata/grassdata05 LOCATION: ncfromfile MAPSET: PERMANENT USER: helena DATE: Mon Nov 6 15:48:53 2006 --------------------------------------------------------------------------------- 1832 input polygons total area: 1.276093e+11 (1832 areas) overlapping area: 0.000000e+00 (0 areas) area without category: 0.000000e+00 (0 areas) ---------------------------------------------------------------------------------
v.info -c map=geology Displaying column types/names for database connection of layer <1>: INTEGER|cat DOUBLE PRECISION|onemap_pro DOUBLE PRECISION|PERIMETER INTEGER|GEOL250_ INTEGER|GEOL250_ID CHARACTER|GEO_NAME DOUBLE PRECISION|SHAPE_area DOUBLE PRECISION|SHAPE_len
v.info map=geology shell=basic,region,topo name=geology mapset=PERMANENT location=nc_spm_08 database=/home/martin/grassdata title=North Carolina geology map (polygon map) scale=1:1 format=native creator=helena organization=NC OneMap source_date=Mon Nov 6 15:48:53 2006 level=2 map3d=0 num_dblinks=1 projection=Lambert Conformal Conic digitization_threshold=0.000000 comment= north=318117.43741634 south=10875.82723209 east=930172.31282271 west=123971.19498978 top=0.000000 bottom=0.000000 nodes=4556 points=0 lines=0 boundaries=3649 centroids=1832 areas=1832 islands=907 primitives=5481
v.info map=geology shell=region north=318117.43741634 south=10875.82723209 east=930172.31282271 west=123971.19498978 top=0.000000 bottom=0.000000
import grass.script as grass grass.vector_columns('geology') # for `v.info -c` grass.vector_info_topo('geology') # for `v.info shell=topo`
Last changed: $Date: 2011-01-15 16:01:57 -0800 (Sat, 15 Jan 2011) $
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