专题地理信息系统（Thematic geographic information system）.docVIP

下载本文档

100
0
约1.49万字
约 13页
2017-07-24 发布于河南
举报
版权申诉

专题地理信息系统（Thematic geographic information system）.doc

1、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。。
2、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
3、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
4、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
5、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
6、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
7、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

专题地理信息系统（Thematic geographic information system）

专题地理信息系统（Thematic geographic information system） A brief answer 1, brief GIS commonly used analysis methods have? (8 points) GIS to achieve the basic functions of spatial analysis and measurement, including the query space, buffer analysis, overlay analysis, path analysis, spatial interpolation, statistical analysis, DEM analysis, trend analysis, etc. 2. Briefly describe the common implementation techniques of WEBGIS (8 points) Commonly used WEBGIS implementation techniques include: 1) CGI (Common Gateway Interface) method; CGI is a used between the WEB server and the client browser agreed standards, allow web users to start a presence in the web server on the host program by command (called CGI program). Using CGI, you can generate images and pass them to the client browser. 2) plug-in (Plug-ins); browser plug-ins are software that can exchange information with browsers. Using the browser plug-in, you can be a part of the functions of the server to the client, in addition to the WEBGIS plug-in, processing and transmission of Geospatial Vector Data with small amount of data to speed up the operation of the user response, reduce network traffic and server load. 3) Java Applet method; Java language is an object-oriented programming language, and its biggest advantage is cross platform features. Using Java Applet to implement WEBGIS, no software installation is required. 4) ActiveX method: ActiveX is a new Internet technology developed on the basis of Microsoft Corp OLE technology, and it is a technical standard. Components developed based on this standard are called ActiveX controls. You can embed it in the HTML file like Java Applet. The advantage is that it can be executed quickly and can be implemented in multiple languages. 3, use the GIS development strategy? (6 points) GIS development strategies can be divided into feasible and infeasible two kind of development strategy, development strategy is not feasible including organization method, database method, imagin