GeoDesign is an emerging concept that aims to address key issues that impact the planning and management of human settlement and activities. Carl Steinitz from the Harvard Graduate School of Design considers that « GeoDesign is geography by design ». GeoDesign is not really a new concept, but it was updated in December 2008 at a specialist meeting on «Spatial Concepts in GIS and Design » organized by the US National Center for Geographic Information and Analysis. Following this meeting, two GeoDesign Summits took place in Redlands (CA), in January 2010 and 2011. GeoDesign was defined by Mike Flaxman (from MIT) as « a set of techniques and enabling technologies for planning built and natural environments in an integrated process, including project conceptualization, analysis, design specification, stakeholder participation and collaboration, design creation, simulation, and evaluation (among other stages). GeoDesign is a design and planning method which tightly couples the creation of design proposals with impact simulations informed by geographic contexts » . According to Goodchild (2010), GeoDesign can be considered as the combination between GIS and Design on the geographic domain and geographic scale. The creative, deliberative, uncertain, multi-actors, multi-scale and multi-thematic process of GeoDesignneeds an innovative theoretical basis, tools, supports and practices in order to fit its complex requirements.GeoDesign allows groups from different professions, places, time, to work together on a same project, and to produce plans and designs. They interact and collaborate to improve the end results by exchanging feedbacks and correct each others. GeoDesignas Design in general is based on process that is complicated by disagreements among participants, difficulties in deciding what is optimal, feedback loops that modify objectives, constraints, while the project is processing. To better understand better this concept, the work of Constance Bodurow and her lab is presented on the following section. A multidisciplinary team of architects, urban designers, civil and environmental engineers,...work together to visualize three-dimensional urban density using the GeoDesign approach and tools in Detroit, Michigan. Their interface combines the capabilities of Esri ArcGIS, Google Earth, SketchUp and other software to model physical and social density and value in three dimensions. They succeeded to suggest two new building topologies with mixed use and apartment residential, called “our max zoning proposal”.By such technology with some enhancement, they are able to empower sustainable design of other urbanized regions across the globe. Some existing geomatic technologies provide potential but incomplete answers and solutionsto thosespecific needs of GeoDesign: Sketch tools, simulation tools, threedimensional design tools, spatio-temporal GIS... But theywere not really designed forGeoDesign (...)

1. WikiSIG and collaborative Geodesign Wided BATITA (Ph.D student) Director: Prof. Stéphane ROCHE Co-director: Prof. Claude CARON Examinator: Prof. Yvan BÉDARD Département des sciences géomatiques Université Laval, Québec (Qc) Geomatic 2011- 12 & 13 October, Montreal 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

19. Class Diagram 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

20. Activity Diagram 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

21. Sequence Diagram 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

22. Sequence Diagram 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

23. Use case Diagram 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

24. Use case Diagram 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign

28. Thank you for your attention Thanks to: 12/10/2011, 4pm Wided Batita_WikiSIG and collaborative GeoDesign