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There are many definitions of Geographic Information Systems (GIS). Most will describe GIS in terms of a tool for activities such as planning, decision making or spatial analysis; or an instrument which can be used to help undertake projects with clear objectives and goals. In order to make best use of any tool, it is important to understand its capabilities and how it operates. In addition, for a GIS to be useful, it must be implemented in the correct working environment and be fed with the correct raw materials.

Additional information

Authors: PERDIGAO V, JRC Ispra (IT)
Bibliographic Reference: Paper presented: Workshop for Decision Makers on the Integration of Space and Conventional Earth Observation Data for Agricultural and Environmental Management, Warsaw (PL), May 8-12, 1995
Availability: Available from (1) as Paper EN 38961 ORA
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