This book constitutes the refereed proceedings of the 7th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2007, held in Cardiff, UK, in November 2007. The 21 revised full papers presented were carefully reviewed and selected from 45 submissions. The papers provide an up-to-date review of advances in recent development of Web and wireless geographical information systems and address issues like conceptual and logical models for W2GIS, data management and data retrieval methods, geographical search engines and Web services, W2GIS query languages and interfaces, 2D and 3D information visualization, exploratory cartography and interfaces, W2GIS data mining, W2GIS security, W2GIS applications and prototypes, location-based services, semantic geo-spatial Web, mobile and wireless GIS, as well as ubiquitous W2GIS. These proceedings contain the papers selected for presentation at the Seventh International Symposium on Web and Wireless Geographical Information Systems (W2GIS 2007). The symposium was organized locally by the University of Glamorgan (UK) and held in Cardiff (UK) in November 2007. It was the latest in a series of annual events that started in Kyoto 2001 and now alternate locations each year between East Asia and Europe. As in previous years, the aim of the symposium was to provide an up-to-date review of advances and recent developments in theoretical and technical issues relating to Web and wireless GIS technologies. The symposium organizers received 45 full papers in response to the call for papers. These papers went through a thorough review process, with each paper being assessed by at least three reviewers. The quality of papers was high, and 21 were selected for presentation and inclusion in these proceedings. It was particularly pleasing to note that 19 different countries are represented by the authors of selected papers. The keynote address was delivered by Jonathan Raper of City University, London, in which he talked about his research work in the areas of location-based services and mobile information needs. We wish to thank all the authors that submitted papers to this symposium. Our special thanks go to all those who attended, and particularly those who presented. Continuous Perspective Query Processing for 3-D Objects on Road Networks 1 Joon-Seok Kim, Kyoung-Sook Kim, and Ki-Joune Li A GIS Based Approach to Predicting Road Surface Temperatures 16 Richard Fry, Lionel Slade, George Taylor, and Ian Davy Thematic Clustering of Geographic Resource Metadata Collections 30 Javier Lacasta, Javier Nogueras-Iso, Pedro Rafael Muro-Medrano, and Francisco Javier Zarazaga-Soria The Need for Web Legend Services 44 B dicte Bucher, Elodie Buard, Laurence Jolivet, and Anne Ruas Supporting Range Queries on Web Data Using k-Nearest Neighbor Search 61 Wan D. Bae, Shayma Alkobaisi, Seon Ho Kim, Sada Narayanappa, and Cyrus Shahabi XFormsGI Extending XForms for Geospatial and Sensor Data 76 J rgen Weitk er and Thomas Brinkhoff Web Architecture for Monitoring and Visualizing Mobile Objects in Maritime Contexts 94 Fr ric Bertrand, Alain Bouju, Christophe Claramunt, Thomas Devogele, and Cyril Ray A Theoretical Grounding for Semantic Descriptions of Place 106 Alistair J. Edwardes and Ross S. Purves Towards the Geo-spatial Querying of the Semantic Web with ONTOAST 121 Alina Dia Miron, J me Gensel, Marl Villanova-Oliver, and Herv artin Modeling Environmental Process Using Semantic Geospatial Web Service 137 Shanzhen Yi and Bo Huang Historic Queries in Geosensor Networks 148 Stephan Winter, S ren Dupke, Lin Jie Guan, and Carlos Vieira Wireless Positioning Techniques A Developers Update 162 Seamus Rooney, Keith Gardiner, and James D. Carswell Frailty Visualizing Spatial Query Results on Mobile Interfaces 175 Luca Paolino, Monica Sebillo, Genoveffa Tortora, and Giuliano Vitiello PhotoMap Automatic Spatiotemporal Annotation for Mobile Photos 187 Windson Viana, Jos ringel Filho, J me Gensel, Marl Villanova Oliver, and Herv artin Towards the Next Generation of Location-Based Services 202 Elias Frentzos, Kostas Gratsias, and Yannis Theodoridis Automated Schematization for Web Service Applications 216 Jerry Swan, Suchith Anand, Mark Ware, and Mike Jackson A Continuous Spatial Query Processing for Push-Based Geographic Web Search Systems 227 Ryong Lee and Yong-Jin Kwon OGC Web Processing Service Interface for Web Service Orchestration: Aggregating Geo-processing Services in a Bomb Threat Scenario 239 Beate Stollberg and Alexander Zipf A Client for Distributed Geo-processing on the Web 252 Theodor Foerster and Bastian Sch er Heuristic Evaluation of Usability of GeoWeb Sites 264 Jitka Koinarkova, Ondrej Visek, and Martin Novak GeminiMap Geographical Enhanced Map Interface for Navigation on the Internet 279 Masayoshi Hirose, Ryoko Hiramoto, and Kazutoshi Sumiya Author Index 293