The tool capable to handle the figure and characters
simultaneously is necessary for the research of air pollution
emergency response system. The concept of geographical
information system could be the answer.
Geographical information systems are tools that allow
for the processing of spatial data into information. Much
geographical information system has been developed and
applied in different field of our daily life. For example, the
GPS satellite system, the web-digital map, etc. They are all
build base on the core technology of GIS system.
Geographical information system has several
advantages over the traditional database. The major
advantages include different treatment of characters, the
ability to treat the map data, and desirable property to pose
the data on internet