v.in.wfs - GRASS GIS manual

NAME

v.in.wfs - Imports GetFeature from a WFS server.

KEYWORDS

vector, import, OGC web services, OGC WFS

SYNOPSIS

v.in.wfs

v.in.wfs --help

v.in.wfs [-lr] url=string output=name [name=string[,string,...]] [layer=string[,string,...]] [srs=string] [maximum_features=integer] [start_index=integer] [version=string] [username=string] [password=string] [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-l: Download server capabilities to 'wms_capabilities.xml' in the current directory and exit
-r: Restrict fetch to features which touch the current region
--overwrite: Allow output files to overwrite existing files
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

url=string [required]: Base URL starting with 'http' and ending in '?'
output=name [required]: Name for output vector map
name=string[,string,...]: Comma separated names of data layers to download
layer=string[,string,...]: Name of data layers to import
srs=string: Specify alternate spatial reference system (example: EPSG:4326); The given code must be supported by the server, consult the capabilities file
maximum_features=integer: Maximum number of features to download; (default: unlimited)
start_index=integer: Skip earlier feature IDs and start downloading at this one; (default: start with the first feature)
version=string: version of WFS, e.g.:1.0.0 or 2.0.0; Default: 1.0.0
username=string: Username or file with username or environment variable name with username
password=string: Password or file with password or environment variable name with password

DESCRIPTION
EXAMPLES
- WFS import without credentials
- WFS import with API key
REQUIREMENTS
SEE ALSO
AUTHORS

DESCRIPTION

v.in.wfs imports OGC WFS maps (Web Feature Service) from external servers.

EXAMPLES

WFS import without credentials

Import of Copernicus Sentinel-2 satellite scene footprints:

# run in Latitude-Longitude project (EPGS code 4326):
# download "sentinel:mgrs" layer:
v.in.wfs url="https://geoserver.mundialis.de/geoserver/sentinel/wfs?" name="sentinel:mgrs" output=sentinel2_mgrs
# download NRW ALKIS "ave:Flurstueck" attribute:
# set the AOI beforehand with g.region and limit import to current region with -r flag
v.in.wfs url="https://www.wfs.nrw.de/geobasis/wfs_nw_alkis_vereinfacht?" -r output=wfs_alkis_vereinfacht srs=25832
name="ave:Flurstueck" version="2.0.0" layer="Flurstueck"

WFS import with API key

Download 25 ship wrecks from LINZ data service:
(first create yourself a free API key at http://data.linz.govt.nz/p/web-services/)

# run in LatLong project:
URL='http://wfs.data.linz.govt.nz/<PUT YOUR API KEY HERE>/wfs?'

# download list of available layers to wms_capabilities.xml
v.in.wfs -l url="$URL"

From that file we learn that the shipwreck layer is called "v:x633" and that EPSG code 4326 (LatLong WGS84) is a supported SRS for this data layer.

v.in.wfs url="$URL" output=linz_hydro_25_wrecks name="v:x633" srs="EPSG:4326" max=25

REQUIREMENTS

The OGR library on the system needs to be compiled with Xerces C++ XML Parser support (for GML).

AUTHORS

Markus Neteler, Hamish Bowman

SOURCE CODE

Available at: v.in.wfs source code (history)

Latest change: Tuesday Dec 17 20:17:20 2024 in commit: ab90c5e5a9b668894da360fa97ffd4a51a38931e