Geographic information system is a spatial information system for acquiring, storing, editing, processing, analyzing and displaying geographic data, and its core is to process and analyze geographic information with computers. GIS software technology is a dual-purpose technology in Zhong Junmin, which is not only used in military field, resource investigation, environmental assessment, etc. , but also for regional planning, public facilities management, transportation, telecommunications, urban construction, energy, electricity, agriculture and other important parts of the national economy. For example, the 120 medical emergency command information system based on GIS platform can use GIS technology to locate the distress point, automatically mark the onset place and assembly place, and recommend five hospitals according to the distance.
Experts point out that 75% to 80% of the information in the world is related to geography and spatial location. As one of the skeleton supporting technologies of "Digital Earth", geographic information system is related to national economic construction, social development and national security. At present, GIS software has been well applied in the world. For example, Japan's GIS market has reached tens of billions of dollars. In China, there are more than 1000 enterprises engaged in GIS software and application development, including software, hardware, training and education. The GIS market can reach tens of billions of yuan.
Important domestic softwares include SuperMap of SuperMap Company, MapGIS of Huashu, and GeoStar of Wuhan University. As the domestic GIS software manufacturer with the highest market share, Beijing SuperMap Geographic Information Technology Co., Ltd., a subsidiary of Chinese Academy of Sciences, has not only completely broken the embarrassing situation that foreign software dominates the world, but also successfully entered Japan, South Korea, India, the United States, France, Italy, Hong Kong and other countries and regions, creating a precedent for the internationalization of GIS software in China.