OWSLib is a Python package for client programming with Open Geospatial Consortium (OGC) web service (hence OWS) interface standards, and their related content models.
Full documentation is available at https://owslib.readthedocs.io
OWSLib provides a common API for accessing service metadata and wrappers for numerous OGC Web Service interfaces.
The easiest way to install OWSLib is via the Python pip utility:
pip3 install OWSLib- Python 3
- virtualenv
Dependencies are listed in requirements.txt. Dependencies are automatically installed during OWSLib installation.
# setup virtualenv python3 -m venv owslib cd owslib source bin/activate # clone codebase and install git clone https://github.com/geopython/OWSLib.git cd OWSLib pip3 install .Find out what a WMS has to offer. Service metadata:
>>> from owslib.wms import WebMapService >>> wms = WebMapService('http://wms.jpl.nasa.gov/wms.cgi', version='1.1.1') >>> wms.identification.type 'OGC:WMS' >>> wms.identification.version '1.1.1' >>> wms.identification.title 'JPL Global Imagery Service' >>> wms.identification.abstract 'WMS Server maintained by JPL, worldwide satellite imagery.' Available layers:: >>> list(wms.contents) ['us_landsat_wgs84', 'modis', 'global_mosaic_base', 'huemapped_srtm', 'srtm_mag', 'daily_terra', 'us_ned', 'us_elevation', 'global_mosaic', 'daily_terra_ndvi', 'daily_aqua_ndvi', 'daily_aqua_721', 'daily_planet', 'BMNG', 'srtmplus', 'us_colordem', None, 'daily_aqua', 'worldwind_dem', 'daily_terra_721'] Details of a layer:: >>> wms['global_mosaic'].title 'WMS Global Mosaic, pan sharpened' >>> wms['global_mosaic'].boundingBoxWGS84 (-180.0, -60.0, 180.0, 84.0) >>> wms['global_mosaic'].crsOptions ['EPSG:4326', 'AUTO:42003'] >>> wms['global_mosaic'].styles {'pseudo_bright': {'title': 'Pseudo-color image (Uses IR and Visual bands, 542 mapping), gamma 1.5'}, 'pseudo': {'title': '(default) Pseudo-color image, pan sharpened (Uses IR and Visual bands, 542 mapping), gamma 1.5'}, 'visual': {'title': 'Real-color image, pan sharpened (Uses the visual bands, 321 mapping), gamma 1.5'}, 'pseudo_low': {'title': 'Pseudo-color image, pan sharpened (Uses IR and Visual bands, 542 mapping)'}, 'visual_low': {'title': 'Real-color image, pan sharpened (Uses the visual bands, 321 mapping)'}, 'visual_bright': {'title': 'Real-color image (Uses the visual bands, 321 mapping), gamma 1.5'}} Available methods, their URLs, and available formats:: >>> [op.name for op in wms.operations] ['GetTileService', 'GetCapabilities', 'GetMap'] >>> wms.getOperationByName('GetMap').methods {'Get': {'url': 'http://wms.jpl.nasa.gov/wms.cgi?'}} >>> wms.getOperationByName('GetMap').formatOptions ['image/jpeg', 'image/png', 'image/geotiff', 'image/tiff'] That's everything needed to make a request for imagery:: >>> img = wms.getmap( layers=['global_mosaic'], ... styles=['visual_bright'], ... srs='EPSG:4326', ... bbox=(-112, 36, -106, 41), ... size=(300, 250), ... format='image/jpeg', ... transparent=True ... ) >>> out = open('jpl_mosaic_visb.jpg', 'wb') >>> out.write(img.read()) >>> out.close()A very similar API exists for WebFeatureService. See tests/wfs_MapServerWFSCapabilities.txt for details.
There is also support for Web Coverage Service (WCS), Catalogue Service for the Web (CSW), Web Processing Service (WPS), and Web Map Tile Service (WMTS). Some of those are beta quality.
OWSLib logs messages to module-based named Python loggers. You may configure your application to use the log messages like so:
>>> import logging >>> LOGGER = logging.getLogger(__name__) >>> # Add formatting and handlers as needed, for example to log to the console >>> ch = logging.StreamHandler() >>> ch.setLevel(logging.DEBUG) >>> ch.setFormatter(logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')) >>> # add the handler to the logger >>> LOGGER.addHandler(ch) >>> LOGGER.setLevel(logging.DEBUG) # update version vi pyproject.toml # update [project]/version git commit -m 'update release version' owslib/__init__.py # push changes git push origin master git tag -a x.y.z -m 'tagging OWSLib release x.y.z' # push tag git push --tags # update on PyPI (must be a maintainer) rm -fr build dist *.egg-info python3 -m build twine upload dist/*