摘要： 利用SVG标准技术解决了基于WebGIS重大危险源系统的地图显示问题。提出基于SVG的地图符号描述模型，重点描述点、线、面3种类型对象，通过它们来显示地图中的实体对象，并应用XML的特点实现了数字地图空间数据的存储方法，使空间数据与属性数据直接建立了有效联系。

关键词: WebGIS系统, 可升级适量图形, 地图

Abstract: This paper discusses how to display the map of the major hazard information system using SVG technology. This system makes use of the SVG’s advantages of describing the vector graphics. A descriptive model of map symbol based on SVG is presented. It describes the general points, lines and regions, depending on which, most of the entity objects in map are displayed. The storing method of space data in digital map is implemented by using the characteristics of SVG based on XML. This method sets up an efficient relationship between the space data and the attribute data.

Key words: WebGIS, Scalable Vector Graphic(SVG), map

中图分类号: 

• TP391