
Geographical information systems (GIS) are computer systems for storing, displaying and analyzing spatial data. Since 1980 there has been a rapid growth in their use in government, commerce and academia, and they can be used for managing a network of utilities, from handling...

Geographical information systems (GIS) are computer systems for storing, displaying and analyzing spatial data. Since 1980 there has been a rapid growth in their use in government, commerce and academia, and they can be used for managing a network of utilities, from handling...