SVG图像技术在WebGIS中的应用研究

在WebGIS领域采用SVG技术的目的是为了解决地图文件在网络传播中的质量问题。文中就Internet地理信息系统和SVG图像技术的相关理论知识提供了较为详细的阐述,将SVG图像技术同其他图像技术做比较,以说明SVG图像技术适合做网络地图文件的原因。然后,利用SVG技术和相关支持工具生成应用于二维WebGIS的地图文件,解决向In-ternet输出高质量地图图形文件的问题,最后成功给出了实现示例,验证了基于SVG的WebGIS地图文件的高分辨率、小体积、优异的动态表示等传统技术不具有的优势。

Research of Applications of WebGIS Based on SVG Technology

The aim of using scalable vector graphics(SVG) technology on WebGIS research scope is settling the question of quality on transmitting Internet map files.This paper particularly presents the basic theory of the Internet geographic information system and SVG image standard.The comparison for explaining reason of advantage of the Internet mapby files using SVG technology between SVG image standard and other imaging technologies is also discussed in this paper.It creates 2-D WebGIS mapby using SVG technology and tools.It settles the problem of displaying high quality map flies to Internet environment.Successful applications are given for affirming the advantage of using SVG technology which traditional techniques can not possess.It has the advantage of higher display,smaller volume and better dynamic display.