Design and implementation of dynamic symbols in dynamic GIS.

Many Internet-GIS have been implemented on the web and they are increasingly becoming an important part of multimedia cartography that has much more users as compared to traditional GIS production media. Internet GIS technology has provided the GIS dynamic information acquisition with technical support. Also, the visualization technology of electronic map has provided tools for GIS symbols with dynamic characteristics. On the basis of GIS dynamic information acquisition, the design idea and implementation methods of dynamic symbols in dynamic GIS are presented in this article. [ABSTRACT FROM AUTHOR]