Geographic Information System (Gis) is an Information System that takes the Geographic phenomena on the earth's surface and the geospatial data and Information of the past 15 years as the specific operating objects. However, some GIS is defined more detailed, not only points out that many of the main functions of geospatial data processing, and gives the system the application of objective: GIS supported by computer hardware and software system, is a collection of acquisition, storage, retrieval, analysis, display in the integration of technology system, predict and update all kinds of spatial data and describe the real world (resources and the environment) feature attribute. As can be seen from the definition, GIS needs the support of software and hardware, and the processing of geospatial data is relatively complex. As geospatial information pays attention to spatial information, locality and multilevel, certain visualization is needed when using data in order to effectively combine, analyze and utilize the data. Geographic Information System (Gis) usually involves a large amount of data, which is mainly due to its regional and multi-layered characteristics. The visualization demand for graphic and image data is usually very large.
Geographic Information System (Gis) is an Information System that takes the Geographic phenomena on the earth's surface and the geospatial data and Information of the past 15 years as the specific operating objects. However, some GIS is defined more detailed, not only points out that many of the main functions of geospatial data processing, and gives the system the application of objective: GIS supported by computer hardware and software system, is a collection of acquisition, storage, retrieval, analysis, display in the integration of technology system, predict and update all kinds of spatial data and describe the real world (resources and the environment) feature attribute. As can be seen from the definition, GIS needs the support of software and hardware, and the processing of geospatial data is relatively complex. As geospatial information pays attention to spatial information, locality and multilevel, certain visualization is needed when using data in order to effectively combine, analyze and utilize the data. Geographic Information System (Gis) usually involves a large amount of data, which is mainly due to its regional and multi-layered characteristics. The visualization demand for graphic and image data is usually very large.<br>
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