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v.out.ogr.1grass
Langue: en
Version: 338029 (ubuntu - 24/10/10)
Section: 1 (Commandes utilisateur)
Sommaire
NAME
v.out.ogr - Converts to one of the supported OGR vector formats.KEYWORDS
vector, exportSYNOPSIS
v.out.ogrv.out.ogr help
v.out.ogr [-cep] input=name [type=string[,string,...]] dsn=string [olayer=string] [layer=integer] [format=string] [dsco=string[,string,...]] [lco=string[,string,...]] [--verbose] [--quiet]
Flags:
- -c
Export features with category (labeled) only. Otherwise all features are exported- -e
Use ESRI-style .prj file format (applies to Shapefile output only)- -p
Export lines as polygons- --verbose
Verbose module output- --quiet
Quiet module output
Parameters:
- input=name
Name of input vector map- type=string[,string,...]
Feature type. Combination of types is not supported by all formats.
Options: point,kernel,centroid,line,boundary,area,face
Default: line,boundary- dsn=string
OGR output datasource name
For example: ESRI Shapefile: filename or directory for storage- olayer=string
OGR layer name. If not specified, input name is used.
For example: ESRI Shapefile: shapefile name- layer=integer
Layer number
A single vector map can be connected to multiple database tables. This number determines which table to use.
Default: 1- format=string
OGR format
Options: ESRI_Shapefile,MapInfo_File,TIGER,S57,DGN,Memory,BNA,CSV,GML,GPX,KML,GeoJSON,Interlis_1,Interlis_2,GMT,SQLite,ODBC,PostgreSQL,MySQL,Geoconcept
Default: ESRI_Shapefile- dsco=string[,string,...]
OGR dataset creation option (format specific, NAME=VALUE)
Default:- lco=string[,string,...]
OGR layer creation option (format specific, NAME=VALUE)
Default:
DESCRIPTION
v.out.ogr converts GRASS vector data to OGR format. OGR (Simple Features Library) is part of the GDAL library, so you need to install gdal to use v.out.ogr.Supported OGR Vector Formats
ESRI ShapefileCSV
GML
KML
Mapinfo File
PostgreSQL/PostGIS
TIGER
For further available drivers go here.
NOTES
To export areas with holes into, e.g., a Shapefile, while keeping the holes as holes, the flag -c has to be used.EXAMPLES
Export to Shapefile
Export lines from GRASS vector map to Shapefile format:v.out.ogr input=lines type=line dsn=lines.shp
Export areas from GRASS vector map to Shapefile format, preserving islands:
v.out.ogr -c input=areas_islands type=area dsn=areas_islands.shp
Export 3D lines from GRASS vector map to Shapefile format:
v.out.ogr input=lines_3d type=line dsn=lines_3d.shp lco="SHPT=ARCZ"
Export 3D points (e.g., Lidar points) from GRASS vector map to Shapefile format
v.out.ogr points_3d type=point dsn=points_3d.shp lco="SHPT=POINTZ"
Export 3D faces from GRASS vector map to Shapefile format:
v.out.ogr input=objects_3d type=face dsn=faces_3d.shp lco="SHPT=POLYGONZ"
Export to GML
Export lines from GRASS vector map to GML format (generates /tmp/testogr.gml file with layer 'testogr'):v.out.ogr input=multi type=line dsn=/tmp/testogr.gml olayer=testogr format=GML
Export to PostgreSQL/PostGIS
Export areas from GRASS vector map directly to PostGIS:v.out.ogr input=polygons type=area \
dsn="PG:host=localhost dbname=postgis user=postgres" \
olayer=polymap format=PostgreSQL
Export to KML (Google Earth)
Example 1 (Latitude-Longitude location):Export faces (3D vectors) from GRASS vector map to KML format for Google Earth:
v.out.ogr input=buildings_3d dsn=buildings_3d.kml olayer=buildings_3d \
format=KML type=face
Example 2 (Latitude-Longitude location):
Generate and export GRASS vector "asteroid" map (faces, 3D vectors) to KML format for Google Earth:
# near Raleigh (NC, USA)
g.region n=35.73952587 s=35.73279182 w=-78.68263928 e=-78.67499517
# two layers of random points
v.random -z output=random3d_a n=10 zmin=0 zmax=200
v.random -z output=random3d_b n=15 zmin=400 zmax=600
# merge into one 3D points map
v.patch input=random3d_a,random3d_b output=random3d
# generate 3D convex hull
v.hull input=random3d output="random3d_hull"
# export to KML 3D
v.out.ogr input=random3d_hull dsn=random3d_hull.kml format=KML \
type=face dsco="AltitudeMode=absolute"
# now open KML file 'random3d_hull.kml' in Google Earth or NASA WorldWind or ...
REFERENCES
OGR vector libraryOGR vector library C API documentation
SEE ALSO
db.out.ogr, v.external, v.in.ogrAUTHORS
Radim Blazek, ITC-Irst, Trento, ItalySome contributions: Markus Neteler, Martin Landa
Last changed: $Date: 2010-04-04 13:21:23 +0200 (dom, 04 apr 2010) $
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