摘要
WebGIS目前得到了广泛应用,但仍存在地图可视化表达和空间分析功能有限的缺陷。本文提出在Web-GIS中引入草稿笔工具,试图充当可视化表达和空间分析的辅助工具。文章分析了草稿笔工具在WebGIS中的作用及其实现的总体思路,并重点围绕基于图片请求的WebGIS详细说明了利用JVGL(JavaScript Vector Graphic Librar-y)函数库和JavaScript编程的实现方法。
WebGIS is used widely, but still there are some shortcomings at the aspects of visualization and spatial analysis. In this paper, it is put forward that draft pen tool should be introduced into WebGIS as the aid tool for map visualization and spatial analysis. Then, the application and realization of draft pen tool in WebGIS is analyzed. At last, the paper focused on the programming technology of draft pen tool in WebGIS based on image-request working, and give out the method to realize the tool based on JVGL（ JavaScript Vector Graphic Library） and JavaScript.
出处
《测绘科学》
CSCD
北大核心
2009年第3期167-168,共2页
Science of Surveying and Mapping
基金
湖南省教育厅资助科研项目(06C123)
