Research of WebGIS Based on SVG and Ajax Technology
Analysising WEB Geographic Information System (WEBGIS) status,found that the existing problem in the current system,combine the SVG with the Ajax,propose a idea of constructing a new WEBGIS system.First introduce a variety of techniques used,SVG technology has such characteristics as small storage space and the strong intercommunication,illustrates the possibility of using this vector graphic Specification to develop W EBGIS system;Ajax technology has the advantage of on-demand access data,shows that WEBGIS achieved by using Ajax to realize communication between client and server has many advantages such as image quality and high transmission speed;cache technology refers to use certain scheduling algorithm to achieve the proper storage of geographic data in order to improve system responsiveness.Second,design a four-story WEBGIS model based on B/S.Then introduce the key points of the model:the principle and technology of caching technology;the specific implementation of SVG uses hierarchical to express spatial data and interact with customers.And in order to improve data transmission speed,the system compresses transfer data,introduce the compression algorithm used,and test the system,compare the performance changes of the system.Finally,using SVG and Ajax techniques to achieve the WEBGIS system.
SVG Ajax WEBGIS GZ1P cache
Feifei Yin Lijing Zhang
Information & Network Management Center North China Electric Power University Baoding,China
国际会议
重庆
英文
629-632
2010-09-17（万方平台首次上网日期，不代表论文的发表时间）