Geographic Information Systems. GIS Definition. Locations. Networks. Areas. Because most information has a spatial component ESRI, GE SmallWorld. 1. GIS is Important. GIS is Important. It helps temporal reasoning as well S. H. Gage, J. Helly and M. Colunga, GIS/EM4 2000. GIS is Useful.
It helps temporal reasoning as well
S. H. Gage, J. Helly and M. Colunga, GIS/EM4 2000
Where, what, when, why, how, who, what if…
It allows us to see the “whole”
A GIS is a computer-based system that provides for the collection, storage, analysis, and display of geo-referenced data.
A decision support system involving the integration of spatially referenced data in a problem solving environment.
GIS is not just mapping. It does spatial operations. For example, it helps to find:
distance D of B?
ESRI, GE SmallWorld
distance along the ground from X to Y along pathway P?
combinations of attributes?