节点文献
基于数据驱动与GML的WebGIS数据传输效率优化算法研究
RESEARCH ON EFFICIENCY OPTIMISING ALGORITHM OF WEBGIS DATA TRANSMISSION BASED ON DATA DRIVER AND GML
【摘要】 介绍影响WebGIS传输性能的众多因素,特别是在网络带宽不高或服务请求数较多时,GIS数据的网络传输延时会急剧增大。针对GML(Geography Markup Language)地图格式文件,以提高地图数据传输效率为优化目标,提出一种数据驱动的分类GML压缩方法 CGDC(Classified GML Data Compression),用以区分结构数据和值数据。通过实际数据的实验设计与对比,验证了提出算法的可行性与高效性。
【Abstract】 In this article,we first describe the mass factors that affect the transmission performance of WebGIS,the network transmission delay of GIS data increases considerably especially when the network bandwidth is low or the number of service requests is much.For GML map format,with the target of optimising the transmission efficiency of map data,we propose a data-driven classified GML compression approach,CGDC(classified GML data compression),which is used to distinguish the structural data and value data.Through experiment design and comparison with practical data,the availability and efficiency of the algorithm proposed in the paper are approved.
- 【文献出处】 计算机应用与软件 ,Computer Applications and Software , 编辑部邮箱 ,2013年07期
- 【分类号】TP393.09;P208
- 【被引频次】2
- 【下载频次】96