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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.

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Presentation on theme: "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."— Presentation transcript:

1 Geographical Information Systems Dr Nigel Trodd

2 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

3 What is GIS?

4 a GIS is... a system to capture, store, check, integrate, manipulate, analyse and display data which are spatially referenced to the Earth. DoE 1987

5 a GIS is NOT a GIS if it lacks tools to.... capture store check integrate manipulate analyse display …spatially referenced data

6 gistools for gisolutions

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

8 CADdbIP Capture Store Check Integrate Manipulate Analyse Display

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

10 …and GIS? Capture Store Check Integrate Manipulate Analyse Display

11 times are changing... ESRI products 1982-2004 ESRI products ArcGIS Explorer ArcGIS Desktop ArcGIS Online ArcGIS Server ArcPad ArcGIS for: Windows Mobile Blackberry (Freeance) iOS

12 WirelessLocation based devices InternetWeb-GIS DatabaseDesktop GIS Spatial analysis Geostats, distributed models Multimedia extensions Specialist apps  time

13 …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

14 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


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