NATIONAL DYNAMIC ATLAS: A NEW WEB BASED MAPPING SYSTEM
R. Liu, X. Zhou, J. Jiang, Y. Jia, P. Lu
National Dynamic Atlas (NDA) is a web based online mapping system using the own
fundamental data and thematic data extracted dynamically from various websites
There are over 30,000 indicators of thematic statistical data, which are collected from more than 20 Chinese government agency’s websites, can be used, and there are 400 thematic map sheets can be browsed from NDA till now. The online map making tools include indicator calculating tool, color palette tool, text annotating tool and tool for thematic symbolization, such as histogram, pie-chart, line-chart, animation, and so on.
The key technical points for developing the NDA are Web mining, data extracting and managing, geo-coding, base maps managing, metadata implementing, online thematic map making and displaying, thematic map database organizing, etc.. Using online, offline, or user’s own data, user can make their own thematic maps and browse all of existing maps disseminated by the system as well.
It is a
new Web Based Mapping System and data sharing platform of data of the National Fundamental
Geographic Information System (NFGIS) in
The address of the NDA website is: http://www.webmap.cn/.