Geographical Information System.ppt
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A GIS is a type of information system that uses geographical data to produce useful information for decision making. It is a computer system combining software, hardware, data, and personnel to manipulate, analyze, and present spatial data and information. A key part of a GIS is the person exploring the data to gain insights. The system captures data from various sources, organizes it, and allows the user to perform spatial analysis to create maps, models, and statistics.
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Geographical Information System.ppt
- 3. A GIS is a particular form of Information System applied to geographical data. An Information System is a set of processes, executed on raw data( Longitude, Latitude) to produce information which will be useful when making decisions. A system is a group of connected entities and activities which interact for a common purpose.
- 4. GIS is a System of computer software, hardware and data, and personnel to help manipulate, analyze and present information that is tied to a spatial location • spatial location – usually a geographic location • Information – visualization of analysis of data • System – linking software, hardware, data • Personnel – a thinking explorer who is key to the power of GIS
- 9. sis Get spatial & attribute data into the GIS. Here we collect preprocess data from various sources. Organize data for retrieval and editing. This subsystem allows we to manage, view, and edit our datasets. Create thematic maps, models, and statistics. Perform tasks on data. With this subsystem, we conduct spatial analysis to create information
- 10. Capture Data Register Map Base Interpret Data Convert Data to Digital Format Store Data in Computer Process Data Display Results
- 17. GIS on the Internet • Olympics — http://citymap.cityofsydney.nsw.gov.au/ • National Geographic Map Machine — http://www.nationalgeographic.com/maps.index.html • Find a Home — http://www.realtor.com • ATM Locator — http://www.visa.com • Store Locator — http://www.godiva.com • GIS Info — http://www.gis.com