GIS introduction imp

GIS introduction imp - GIS Definition Many expert used GIS for his own demand and that is the reason that they define GIS in that context

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GIS Definition Many expert used GIS for his own demand and that is the reason that they define GIS in that context. a Aronoff (1989) gives a general description of GIS as “any manual or computer-based set of procedures used to store and manipulate geographically- referenced data.” a More specifically, Aronoff (1989) defines GIS as "a computer-based system that provides four sets of capabilities to handle georeferenced data : i) data input ii) data management (data storage and retrieval) iii) manipulation and analysis iv) data output.” a Cower (1988) defines GIS as “a decision support system involving the integration of spatially referenced data in a problem solving environment”.
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HOW GIS WORKS HOW GIS WORKS Thematic object selection Real world Maps -Analysis GIS operations Cartographic processing .- Generalization - Symbolization Geology Hydrology Soil Attribute tables Decision makers Statistical tables GPS Satellite images Aerial photographs Point Area Line Field Survey
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GIS GIS A computer-based system capable of holding and using data describing places on the earth’s surface The real world consists of many geographies which can be represented as a number of related data layers. Hydrology Landuse Districts Topography Soils GIS IS NOT A DECISION MAKING TOOL GIS IS SUPPORTING TOOL FOR DECISION MAKERS
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WHY GIS WHY GIS GIS has its unique ability as it “assimilate data from different divergent sources into one data system either if it is spatial or non- spatial data”. a Due to advancement in technology, its functions are gradually changing from data collection and analysis to the promotion of visualization, incorporating a variety of existing data sources and new techniques such as simulation models, multimedia and video . These techniques have ensured that the data, and in particular geo- reference information, become more accessible to non-technical audiences. a a 70% of the information includes some geographical facts in the decision-making process.
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Evolution of GIS Ÿ Revolution in information technology - Computer Technology - Remote Sensing - Global Positioning System (GPS) - Communication Technology Ÿ Rapidly declining cost of computer hardware Ÿ Enhanced functionality of software, more user friendly
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QUESTIONS A GIS CAN ANSWER Condition Where is it. ..? Instead of identifying what exists at a given location,
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This note was uploaded on 11/14/2010 for the course MARKETING 234 taught by Professor Arshad during the Spring '10 term at IMSciences.

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GIS introduction imp - GIS Definition Many expert used GIS for his own demand and that is the reason that they define GIS in that context

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