Geographic Information System
Geographic Information System (Geographic Information System, abbreviation: GIS) is a comprehensive discipline, combined with geography and cartography, has been widely used in different areas, is used for input, storage, query, analysis and display geography Data of the computer system, can be divided into the following five parts: ▪ personnel, GIS is the most important component. Developers must define the various tasks that are performed in the GIS and develop the processing procedures. Skilled operators can often overcome the shortcomings of GIS software, but the opposite is not true. The best software can not make up for the operator of the GIS know nothing about the negative effects. ▪ Data, accurate available data can affect the results of the query and analysis. ▪ Hardware, hardware performance affects processing speed, ease of use and possible output. ▪ Software not only includes GIS software, but also includes a variety of databases, drawings, statistics, image processing and other programs. ▪ ...