地理信息 万维网地图服务器接口(Geographic information - Web Map server interface)
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| 作者：不详 来源：不详 更新时间：2008-3-27 10:15:55 |
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| 编 号 | 19128 | | 名 称 | 地理信息 万维网地图服务器接口
Geographic information - Web Map server
interface | | 负责人 | Mr. John R. Rowley | | 工作组 | 第4工作组 | | 进 展 | 工作阶段 计划完成时间
各阶段相关最新文件
国际标准（IS）: 2004年1月 无
最终国际标准草案（FDIS）: 2003年10月 无
国际标准草案（DIS）: 2003年3月 无
√ 委员会草案（CD）: 2002年9月 N
1331
前面打“√”的为已完成阶段 | | 范 围 | This International Standard will:- describes a Web Map Server (or just Map Server). A Map Server can do three things. It can:1. Produce a map (as a picture, as a series of graphical elements, or as a packaged set of geographic feature data),2. Answer basic queries about the content of the map, and 3. Tell other programs what maps it can produce and which of those can be queried further. | | 目 的 | The purpose of this New Work Item Proposal (NWIP) is to provide an implementation specification for the Web environment that industry can use. This NWIP is based on the attached tested document.
This standard describes a Web Map Server (or just Map Server). A Map Server can do three things. It can:1. Produce a map (as a picture, as a series of graphical elements, or as a packaged set of geographic feature data),2. Answer basic queries about the content of the map, and 3. Tell other programs what maps it can produce and which of those can be queried further.
To first order, a standard web browser can ask a Map Server to do these things just by submitting requests in the form of Uniform Resource Locators (URLs). The content of such URLs depends on which of the three tasks is requested. All URLs include a Web Mapping Technology specification version number and a request type parameter. In addition,1. To produce a map, the URL parameters indicate which portion of the Earth is to be mapped, the coordinate system to be used, the type(s) of information to be shown, the desired output format,and perhaps the output size, rendering style, or other parameters.2. To query the content of the map, the URL parameters indicate what map is being queried and which location on the map is of interest.
To ask a Map Server about its holdings,the URL parameters include the "capabilities" request type.
The GIS developers will benefit from this standard. This standard will ensure a good fit with the other developing ISO 191xx standard.
Vendors already have products complying with this standard. This standard will ensure control over interoperability.
As this work is beginning to be used byn major organizations there is a need for this standard as soon as practical.The target date for completion is September 2001.
It is expected that future implementation models for other distributed computing platforms will be produced. | | 其 它 | 立项时间：2000年9月 立项文件：N 939 N 996 |
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