基于VML的简单WebGIS实现

Construction of Simple WebGIS System Based on VML

VML是一种可用于构建WebGIS服务的Web矢量图形技术。它具有表述简单、交互性强、易于维护等特点。基于VML开发的陆态网络资料信息管理系统是一个将空间数据以Web矢量图形形式呈现,实时响应用户操作的简单WebGIS应用。该系统通过VML构建的简单WebGIS应用模块,将底层空间数据转换成Web矢量图,并结合用户响应,实现交互式绘图。上述开发流程是一种颇为有效的WebGIS构建方式,为实际工作带来较大的便利。

VML is a kind of Web vector graphics technology which can be used to build WebGIS services.Its characteristics includes：ease of expression,ease of interaction and ease of maintenance,etc.The data management system of CMONOC based on VML is a simple WebGIS application,which presents the spatial data in the form of Web vector graphics and provides real-time response to the user＇s operation.The system constructs simple WebGIS application modules via VML,converts the underlying spatial data into Web vector graphics and combines the user＇s response to implement interactive drawing.As an effective construction method of WebGIS systems,the development process above can bring great convenience in practice.