OGC网络服务实用库
项目描述
OWSLib
概述
OWSLib 是一个用于客户端编程的 Python 包，它遵循开放地理空间联盟（OGC）的 Web 服务（因此称为 OWS）接口标准及其相关内容模型。
完整文档可在 https://owslib.readthedocs.io 获取
OWSLib 提供了一个通用的 API 来访问服务元数据，并为许多 OGC Web 服务接口提供了包装器。
安装
安装 pywis-pubsub 最简单的方法是通过 Python 的 pip 工具
pip3 install OWSLib
需求
- Python 3
- virtualenv
依赖项
依赖项列在 requirements.txt 中。依赖项将在 OWSLib 安装过程中自动安装。
安装 OWSLib
# 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
python3 setup.py install
运行
了解 WMS 能提供什么。服务元数据
>>> 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()
对于 WebFeatureService 也有非常类似的 API。有关详细信息，请参阅 tests/wfs_MapServerWFSCapabilities.txt。
还支持 Web 覆盖服务（WCS）、网络目录服务（CSW）、网络处理服务（WPS）和网络地图瓦片服务（WMTS）。其中一些是beta质量。
日志记录
OWSLib 将消息记录到名为 'owslib' 的 Python 日志记录器。您可以配置应用程序使用日志消息，如下所示
>>> import logging
>>> owslib_log = logging.getLogger('owslib')
>>> # 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
>>> owslib_log.addHandler(ch)
>>> owslib_log.setLevel(logging.DEBUG)
发布
# update version
vi owslib/__init__.py
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
python setup.py sdist bdist_wheel --universal
twine upload dist/*
支持
下载文件
下载适用于您的平台的文件。如果您不确定选择哪个，请了解更多关于 安装包 的信息。
源分布
OWSLib-0.31.0.tar.gz (185.3 kB 查看哈希值)
构建分布
OWSLib-0.31.0-py2.py3-none-any.whl (233.1 kB 查看哈希值)
