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Web Mapping Using XML and SVG

Web Mapping Using XML and SVG. SHEA Yu-kai Geoffrey Senior Lecturer Department of Land Surveying & Geo-Informatics The Hong Kong Polytechnic University 2002.09.20. Outline. Introduction Web Mapping Architecture Technological Considerations Geo-Spatial Data Integration Conclusions

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Web Mapping Using XML and SVG

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  1. Web Mapping Using XML and SVG SHEA Yu-kai Geoffrey Senior Lecturer Department of Land Surveying & Geo-Informatics The Hong Kong Polytechnic University 2002.09.20

  2. Outline • Introduction • Web Mapping Architecture • Technological Considerations • Geo-Spatial Data Integration • Conclusions • Future Development • Demonstrations • Q&A

  3. Objectives • To investigate the mapping implications of setting up an online GIS application for displaying spatial and non-spatial information • To present a Web-based approach for data integration that would be built upon a framework of ideas on the use of emerging Internet technologies

  4. Web Mapping Architecture • Three-Tier Client-Server Model • System performance improvements • System throughput • System reliability • System functionality

  5. Technological Considerations • Web mapping application development • Cartographic • Functional • Interface design

  6. Technological Considerations -Application Development • Ease of installation and upgrade • Minimization of platform dependency in system operation • Facilitate communications across different computer networks • Favor future enhancements and maintenance

  7. Technological Considerations -Cartographic Considerations • Selective display of map features • Display symbology for map features • Display of descriptive information • Display appropriate amount of map features

  8. Technological Considerations -Functional Considerations • Input/output spatial information • Store and manage spatial information • Administer the system • Facilitate network communication

  9. Technological Considerations -Interface Design Considerations • Map generator • GIS gateway • Web server interface • Web client interface

  10. Geo-Spatial Data Integration • Front-end user interface • Transmission protocol • Vector graphic presentation • Raster graphic presentation • Data modeling

  11. Conclusions • Global accessibility for geo-spatial data is important • Integration of diverse geo-spatial and non-spatial data is an important process in Web mapping • Technological possible

  12. Conclusions (cont’d) • Current WWW technology provides limited capability for sophisticated online GIS analysis • No comprehensive strategy for complete integration of geo-spatial data for building a comprehensive online Web mapping system

  13. Future Development • Non-Proprietary XML-Based Standards • SVG (Scalable Vector Graphics) • Providing basic spatial geometric definition and graphics representation • GML (Geography Markup Language) • Building interconnected spatial models in much the same way World Wide Web pages are linked • Providing a means of representing spatial relationships (object oriented methodology)

  14. Demonstrations Web Mapping Basics Technical Description of SVG Web Mapping SVG Web Mapping Demonstration

  15. Q & A

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