.. Writing Tip: Writing tips describe what content should be in the following section. .. Writing Tip: Metadata about this document :Author: OGC :License: Creative Commons .. Writing Tip: Project logos are stored here: https://svn.osgeo.org/osgeo/livedvd/gisvm/trunk/doc/images/project_logos/ and accessed here: ../../images/project_logos/ A symbolic link to the images directory is created during the build process. .. image:: ../../images/project_logos/logo-OGC-left.png :scale: 100 % :alt: OGC logo :align: right .. image:: ../../images/project_logos/logo-OGC-right.png :scale: 100 % :alt: OGC logo :align: right .. Writing Tip: Name of application Web Map Service (WMS) 网络地图服务 ================================================================================ .. Writing Tip: 1 paragraph or 2 defining what the standard is.   OGC® Web Map Service (WMS) 接口标准是一套简单的 HTTP 接口,用于从一个或多个地理信息数据库传输有地理定位的地图图像数据。其返回为 JPEG、PNG、等地图数据,可用于网页或桌面客户端显示。(http://www.opengeospatial.org/standards/wms) .. image:: ../../images/standards/wms.jpg :scale: 55% :alt: WMS in Context   WMS 标准包含三个操作: * GetCapabilities(必须):获取 WMS 服务的内容与接受的请求。 * GetMap(必须):获取指定地图数据 * GetFeatureInfo(可选):查询特定要素   该标准已被上百种产品使用。请参考此处的列表:http://www.opengeospatial.org/resource/products/compliant 。   一个优秀的实例是 NC OneMap (http://www.nconemap.com/) 。它依赖 WMS 从多个服务器获取数据,并以同样的方式发布。这样的数据可以被所有人使用,但也能进入 ESRI、MapInfo、Intergraph 等私有软件环境中。 相关信息 -------------------------------------------------------------------------------- .. Writing Tip: Describe Similar standard   OGC WMS 教程 http://www.opengeospatial.org/resource/cookbooks   相关标准: * :doc:`wfs_overview` * :doc:`wcs_overview` * Web Map Tile Service * :doc:`gml_overview` * :doc:`kml_overview` * :doc:`sld_overview` * Symbology Encoding * :doc:`fe_overview`