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CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
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CartoService: A Web Service Framework for Quality On-Demand Geovisualisation

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CartoService: A Web Service Framework for Quality On-Demand Geovisualisation …

CartoService: A Web Service Framework for Quality On-Demand Geovisualisation
Rita Engemaier, Hartmut Asche - Department of Geography, University of Potsdam

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  • 1. CartoService – A Web Service Framework for Quality On-Demand Geovisualisation<br />Rita Engemaier & HartmutAsche<br />Geoinformation Research GroupGeography Department, University of Potsdam<br />
  • 2. Outline <br />Introduction & Objectives<br />Cartographic modelling process<br />CartoService approach<br />Conclusion<br />
  • 3. 1 Introduction<br />
  • 4. 1 Introduction Background<br />background<br />steady increase in spatial data, tool availability & accessibility data bases, analysis & processing tools (GIS)<br />based on the fundament of rapid development of information & communication technology (ICT)SOA, Web-GIS, crowd sourcing, cloud & GRID computation<br />visible effects<br />grown demand for mapping applications in and outside the internetGoogleMaps|Earth, GeoCaching, GeoTagging, car navigation ... <br />changing roles in the provider-user relation & data aquisitionOpenStreetMap, Free & Open Source (Web) GIS & processing tools<br />from monolithic software to interoperable software components and services<br />
  • 5. 1 Introduction Web-based Geovisualisation & Maps<br />the digital environment of recent ICT extends the traditional static 2D map by multidimensional and multivariate representations (views|displays)<br />traditionally the communication of geospatial information is/was the domain of cartography and maps<br />BUT: only a small amount of the long-term proven cartographic methods and expertise is yet utilised or at least visible in internet maps and mapping applications<br />GeoVis<br />Dynamic multidimensional representations (views)<br />DB<br />3D<br />4D<br />VR<br />PCP<br />...<br />Static2D<br />
  • 6. 1 Introduction Motivation & Objectives<br />in comparison to traditional derived thematic maps (2D-static) follow aspects can be recognised<br />from the number of 10 to 12 traditional, static map types only a few are typically used for web-based representations<br />the cartographic quality (including effectiveness & expressiveness) of web-maps is often poor<br />the lack of graphical quality cannot be bypassed by interaction or dynamic representation<br />Objectives<br />provide cartographic visualisation expertise to web-maps|users<br />integrate cartographic modelling quality in web-mapping systems<br />
  • 7. 2 Cartographic Modelling<br />
  • 8. interaction<br />2 Cartographic Modelling Communication model<br />reality<br />primary<br />model<br />- data - <br />secondary <br />(graphic)<br />model<br />- map -<br />tertiary model<br />- user -<br />(Web)Map<br />Data base<br />
  • 9. 2 Cartographic Modelling Processing functions<br />“The strength of maps is their ability to select from reality and abstract the selection via a well designed symbolization. This results in maps that are characterized by their relative emptiness, by visual hierarchy and have a particular appealing style.”(ICA, 2009. Research Agenda)<br />essential functionsofthemapdesign process<br />Buttenfield and Mark (1991)<br />
  • 10. 2 Cartographic Modelling Processing functions<br />purpose<br />user<br />reality<br />data set-data model-<br />map layer<br />-graphic model-<br />selection<br />analysis & classification<br />symbol-isation<br />projection<br />GEOM<br />ATTRIB<br />calculation<br />GRAPH<br />G<br />A<br />
  • 11. 3 CartoService Approach<br />
  • 12. CartoService<br />purpose<br />interaction<br />user<br />reality<br />data set-data model-<br />map layer<br />-graphic model-<br />selection<br />analysis & classification<br />symbol-isation<br />projection<br />GEOM<br />ATTRIB<br />calculation<br />GRAPH<br />G<br />A<br />3 CartoService Approach Orchestration & Chaining<br />services<br />projectionweb service<br />generalisationweb service<br />classificationweb service<br />
  • 13. 3 CartoService Approach Orchestration & Chaining<br />GUI<br />interface<br />purpose<br />data<br />filter<br />construction<br />evaluation<br />start<br />map<br />processes<br />services<br />projectionweb service<br />generalisationweb service<br />classificationweb service<br />
  • 14. internet<br />CartoService registry<br />publish<br />bind<br />find<br />describe<br />provider<br />client<br />use<br />using the publish-find-bind paradigm from SOA<br />already successful used by OGCs: WMS/WFS, WPS etc.<br />missing service logic and service management facilities<br />3 CartoService Approach Service Binding<br />
  • 15. metadata>><br />DB<br />file<br />data>><br />style & filter rules <<<br />map<<<br />3 CartoService Approach Implementation<br />
  • 16. A<br />B<br />C<br />3 CartoService Approach Processing Sequence<br />DB<br />file<br />GUI<br />purpose<br />data<br />filter<br />construction<br />evaluation<br />start<br />map<br />D<br />E<br />
  • 17. 4 Conclusion<br />web mapping is not just distributing and viewing data<br />mechanisms are needed to apply same cartographic quality standards to web maps (geovisualisations) as to traditional 2D-maps<br />applying SOA principles (web services) to web-based cartographic visualisation is a promising concept to improve cartographic quality of web-maps <br />components and key processes of cartographic modelling are available and applicable (some already as web-services)<br />providing cartographic expertise by an interoperable web-service offers possibilities not just for private users, but also to SDIs to improve the communication quality of their web-maps and to direct (transactive) evaluation of these visualisations<br />
  • 18. Thank you for your attention!Questions, remarks and comments are very welcome.<br />Rita Engemaier & HartmutAsche<br />Geoinformation Research GroupGeography Department, University of Potsdam<br />
  • 19. typical lacks of cartographic quality in web-maps<br />1 Introduction Motivation & Objectives<br />selection<br />cartographic generalisation<br />symbology + output quality<br />

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