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Geographic Information System
Transcript of Geographic Information System
These early records followed the two-element structure of modern geographic information systems: a graphic file linked to an attribute database. http://rosmee.wordpress.com/2009/09/17/dhofar-cave-paintings/cave-painting-01613/ The idea of portraying different layers of data on a series of base maps, and relating things geographically, has been around much longer than computers. google images google images Scottish environmentalist, Ian McHarg, opened the way to comparing layers of various physical and social features to determine where new roads and houses should be built and what land should be protected. Canada then developed the first and really operational GIS. It was called Canada Geographical Information System or CGIS and was being used in 1960 to save, manipulate and study the data gathered for Canada Land Inventory. google images google images google images google images What is GIS? Definitions Components How does it work? GIS (According to Webster)
Geographic information system, a system for storing and manipulating geographical information on computer. Merriam-Webster - The Free Dictionary google images google images google images google images http://egsc.usgs.gov/isb/pubs/gis_poster/ http://egsc.usgs.gov/isb/pubs/gis_poster/ http://egsc.usgs.gov/isb/pubs/gis_poster/ http://egsc.usgs.gov/isb/pubs/gis_poster/ http://egsc.usgs.gov/isb/pubs/gis_poster/ http://egsc.usgs.gov/isb/pubs/gis_poster/ http://egsc.usgs.gov/isb/pubs/gis_poster/ Pros Cons http://bit.ly/11l2pbL Explore GIS GIS has many advantages if used properly What can GIS be used for? How could GIS be involved in your everyday life? Social Network Location check-ins: Twitter/ Foursquares/ Facebook GPS Online Travel Directions Google Maps Google Earth Street Cameras Traffic tickets by mail Accessible
Highly accessible But things can go wrong.. Bad or outdated information
GIS is a technical tool and has a learning curve
Maps can give the wrong Impression google images google images The power of a GIS comes from the ability to relate different information in a spatial context and to reach a conclusion about this relationship. google images Features Attributes Databases Everyone Does... Levels of Government Education Business Operations Environmental and Conservation Natural Resources military local and federal offices wildlife mining real estate Who uses GIS? researchers classroom teachers learning centers insurance agents vegetation habitats oceans coal petroleum How might you use GIS
in the future? decisions buying a home or land travel business locations career requirements teaching others Show relationships between groundwater purity and runoff Measure changes in wildlife habitat and numbers Model impacts of events like floods or droughts NC Coastal Land Preservation Trust : property boundaries Along Yellowstone River: mapping housing for riverbank stabilization projects Analyze threats to coastal reefs scouting school districts WWF: Wildfinder worldwildlife.org/pages/wildfinder decisions on resource placements in cities Town of Holden Beach: sewer system evaluate potential military movement schools partner with local govt offices Philly PD: overhaul with GIS fire/emergency services banking agriculture