Abstract:
A geographic information system (GIS) is a computer system for storing, managing, analyzing, and
displaying geospatial data. Since the 1970s GIS
has been important for professionals in natural
resource management, land use planning, natural
hazards, transportation, health care, public services, market area analysis, and urban planning. It
has also become a necessary tool for government
agencies of all the levels for routine operations.
More recent integration of GIS with the Internet,
global positioning system (GPS), wireless technology, and Web service has found applications in
location-based services, Web mapping, in-vehicle
navigation systems, collaborative Web mapping,
and volunteered geographic information. It is
therefore no surprise that geospatial technology
was chosen by the U.S. Department of Labor as a
high-growth industry. Geospatial technology centers on GIS and uses GIS to integrate data from
remote sensing, GPS, cartography, and surveying
to produce useful geographic information.
Many of us, in fact, use geospatial technology
on a daily basis. To locate a restaurant, we go online, type the name of the restaurant, and find it on
a location map. To make a map for a project, we go
to Google Maps, locate a reference map, and superimpose our own contents and symbols to complete
the map. To find the shortest route for driving, we
