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

gistools for gisolutions

GI technologies... analogue cartography Capture Store Check Integrate Manipulate Analyse Display

CADdbIP Capture Store Check Integrate Manipulate Analyse Display

CADdbIP Capture Store Check vector onlynon-spatial Integrate project based Manipulate Analyse non-spatialraster only Display

…and GIS? Capture Store Check Integrate Manipulate Analyse Display

times are changing... ESRI products ESRI products ArcGIS Explorer ArcGIS Desktop ArcGIS Online ArcGIS Server ArcPad ArcGIS for: Windows Mobile Blackberry (Freeance) iOS

WirelessLocation based devices InternetWeb-GIS DatabaseDesktop 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, The GIS Survival Guide, GeoData Institute, Southampton. Cowan DJ, GIS versus CAD versus DBMS. What are the differences ? Photogrammetric Engineering and Remote Sensing, November. Department of the Environment, Handling Geographic Information. Report of the Committee of Enquiry chaired by Lord Chorley. HMSO, London. Ehlers M et al., Integration of remote sensing with GIS: a necessary evolution. Photogrammetric Engineering and Remote Sensing, 55, Longley PA, Goodchild, MF, Maguire, DJ & Rhind DW (eds.), Geographical Information Systems: Principles, Techniques, Management and Applications. New York: Wiley. Maguire DJ, 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, Demystifying the persistent ambiguity of GIS as 'tool' versus 'science‘, Annals of the Association of American Geographers, 87,