Sub Main GIS system

See you again ... this time I'll discuss a bit about the major subsystems of GIS. GIS (Geographical Information System) or also known as GIS (Geographical Information System) is a computer-based information system that combines elements of the map (geographical) and information about the map (attribute data) and is designed to obtain, process, manipulate, analyze, demonstrate and display data to solve spatial planning, process and investigate the problem. And here are the major subsystems of GIS: Input sub-system Devices to provide data until it is ready to be utilized by the user equipment terrestrial mapping, photogrammetry, digitization, scanners, etc.. In general, the output of the device in the form of maps, images and other image display. Sub-systems Database Digitized base map in different areas / regions with different coverage scale has been and continues to do in order to build a spatial database system that is easily updated and used by a data literal as its main component. Data Processing sub-system Data processing both vector and raster that can be done with various software such as AUTOCAD, ArcView, ArcGIS, Erdas, MapInfo, etc.. One characteristic of GIS is a system software layer (coating) to incorporate some elements of information such as rivers, settlements, roads, etc..

In the picture above shows there are 8 layers. The map will appear based on the layer that is composed in which the top layer is a layer that appears above. Presentation of Information Sub-system Conducted by various media to be easily utilized by the user. The following are the advantages of GIS and compared with analogous maps map SIG static Static and dynamic Expensive process of updating Porses inexpensive updating complex flexible Discrete (pages per sheet) Continuously and as needed Do not allow direct analysis and modeling Analysis and modeling allows direct Generate the data to the interpretation Generate data does not need interpretation