geographical information systems
DESCRIPTION
Geographical Information Systems. Dr Nigel Trodd. Your aim is. to understand the main features of GIS. You will be able to. identify technologies for handling geospatial data recognise GIS functions assess the relationship between GIS & other geospatial technologies. What is. GIS?. - PowerPoint PPT PresentationTRANSCRIPT
Geographical Information Systems
Dr Nigel Trodd
Your aim is
to understand the main features of GIS
You will be able to identify technologies for handling geospatial
data recognise GIS functions assess the relationship between GIS & other
geospatial technologies
What is
GIS?
a GIS is...
a system to capture, store, check, integrate, manipulate, analyse and display data which are spatially referenced to the Earth.
DoE 1987
a GIS is NOT a GIS if it lacks tools to....
capture store check integrate manipulate analyse display
…spatially referenced data
GI technologies... analogue cartography
Capture
Store
Check
Integrate
Manipulate
Analyse
Display
CAD db IP
Capture
Store
Check
Integrate
Manipulate
Analyse
Display
CAD db IP
Capture
Store
Check vector only non-spatial
Integrate project based
Manipulate
Analyse non-spatial raster only
Display
…and GIS?
Capture
Store
Check
Integrate
Manipulate
Analyse
Display
times are changing...
ESRI products 1982-2004ESRI products
ArcGIS Explorer
ArcGIS Desktop
ArcGIS Online
ArcGIS Server
ArcPadArcGIS for:Windows MobileBlackberry (Freeance)iOS
Wireless Location based devices
Internet Web-GIS
Database Desktop GIS
Spatial analysis
Geostats, distributed models
Multimedia extensions
Specialist apps
time
…some things never change
ALL GIS store, check & integrate geospatial data– spatial referencing system– Topology
ALL GIS manipulate & analyse geospatial data– Query– spatial operations
ALL GIS display geospatial data– select layers– pan, zoom
Bibliography Clark MJ, 1992. The GIS Survival Guide, GeoData Institute, Southampton. Cowan DJ, 1988. GIS versus CAD versus DBMS. What are the differences ?
Photogrammetric Engineering and Remote Sensing, November. Department of the Environment, 1987. Handling Geographic Information. Report of
the Committee of Enquiry chaired by Lord Chorley. HMSO, London. Ehlers M et al., 1987. Integration of remote sensing with GIS: a necessary
evolution. Photogrammetric Engineering and Remote Sensing, 55, 1619-27. Longley PA, Goodchild, MF, Maguire, DJ & Rhind DW (eds.), 1999.
Geographical Information Systems: Principles, Techniques, Management and Applications. New York: Wiley.
Maguire DJ, 1991. An overview and definition of GIS. In Maguire DJ, Goodchild MF & Rhind DW (eds.) GIS: Principles and Applications. Longman: London, 9-20
Wright DJ, Goodchild MF & Proctor JD, 1997. Demystifying the persistent ambiguity of GIS as 'tool' versus 'science‘, Annals of the Association of American Geographers, 87, 346-362. http://dusk.geo.orst.edu/annals.html