Organisation terrestris GmbH & Co kg

ID Number

401

Name	Till Adams
Organisation	terrestris GmbH & Co KG
Email	[e-mail]

Paper Title	Modelling 3D underground data in a webbased 3D-Client
I can give a practical demo	yes

Paper Abstract (short)

In the German federal state of Brandenburg geological borehole data, depth profiles and geological layer-data should be visualized in a 2D and 3D-based webclient: this talk will present the technical solution based on PostGIS 2.0, GeoServer, OpenLayers, GeoExt2 on the 2D and ExtJs 4.x and X3Dom on the 3D-side.

Paper Abstract (long)

The geological borehole, depth profile and layer-data and some background-data such as topographical maps were setup as services, mainly in a PostGreSQL/PostGIS and GeoServer environment. Both webclients are fully client-side based applications, for the 3D-client WebGL for rendering is used and all data is delivered via standarized services. For the 3D-data the X3D format is used, which is not an official OGC standard yet but delivers phantastic possibilities for 3D-modelling of data in a webbased environment. The talk will focus on some of the high-end announced requirements, especially to the 3D-webclient such as gazetteers, FeatureInfo or dynamic load of services such as WMS or WFS. A special task is the delivering of borehole data as BoreholeML, for which the GeoServer app-schema extension was used. From a technical point of view especially the development of a GeoExt-like library which connects X3dom and ExtJs 4.x is an interesting part. With this solution, elements such as gazetteers and presentation-masks for requested attribute data could be used in both 2D- and 3D-client. At the end some live impressions of the application will be shown.

Topic type		Target Type
Visualization: effective presentation of information. New data: handling new data models, for example 3D & temporal data, or big data. webbased 3D modelling		People new to open source geospatial Manager End User Technical / Developer

Additional Presenters
Name	Emmanuel Belo
Organisation	camptocamp S.A.
Email	[e-mail]

ID Number

69

Name	Emmanuel Belo
Organisation	Camptocamp SA
Email	[e-mail]

Paper Title	3D web services and models for the web: where do we stand?
I can give a practical demo	yes

Paper Abstract (short)

The aim of this talk is to sum up the standardization efforts (OGC and W3C) in defining 3D web services and models, as well as to show existing implementations to support the discussion.

Paper Abstract (long)

In the past years, numerous open source projects have started to display 3D globes and 3D data on the web. Standardizing web services, data format and representation models is, therefore, a very hot topic. There are in particular ongoing efforts on the OGC side as well as on the W3C side. The OGC has released a draft candidate for a 3D web service W3DS, the ISO X3D standard proposes an XML-based file format for representing 3D computer graphics and the W3C is considering adding X3D rendering into HTML5. Other projects implement their own web services and formats. On the implementation side, Geoserver supports W3DS and X3D, the X3DOM library prototypes a possible implementation of X3D HTML5 integration and last but not least, browsers with WebGL support are fully able to handle the representation of 3D data on the client side. The talk is going to detail the mentioned elements, show demonstrations of existing implementations and try to suggest a possible path into the 3D web for the FOSS4G community.

Topic type		Target Type
Collaboration: data collection, data sharing, open standards. New data: handling new data models, for example 3D & temporal data, or big data.		Manager Technical / Developer

Additional Presenters
Name	Claude Philipona
Organisation	Camptocamp SA
Email	[e-mail]
Name	Tom Payne
Organisation	Camptocamp SA
Email	[e-mail]

ID Number

280

Name	Richard Hewitt
Organisation	University of Alcal‡, Madrid, Spain
Email	[e-mail]

Paper Title	A Cellular Automata land use model for the R software environment
I can give a practical demo	yes

Paper Abstract (short)

A cellular automata model of land use change developed in the free and open source software environment R is presented. The advantages offered by R as a development environment for a CA land use model are evaluated, and the pros and cons of the approach employed are discussed in depth with reference to commercial alternatives.

Paper Abstract (long)

The application of geographic Cellular Automata (CA) based techniques for land use modelling can be traced back to the theoretical formulations of the American geographer Tobler (1979), later implemented in practice by White and Englelen (1993) and Batty and Xie (1994). Since then, CA applications have developed very rapidly and CA-based software environments such as Metronamica and SLEUTH are now widely employed in many countries across several continents as scientific and policy tools for exploring land use dynamics and future land use change. The term CA is sometimes applied in a broad sense to any cell-based land use model in which algorithmic operations are used iteratively to determine future land use states on the basis of parameters such as distance from transport networks (accessibility), biophysical aptitude of land areas to take on new states (suitability), or exclusion zones such as natural protected areas or land set aside for future development (zoning). However, in a a CA land use model sensu stricto, key land use change dynamics are represented by neighbourhood transition functions, in which the value (land use class) of a given cell in each model iteration is determined by the value of adjacent cells according to user-defined attraction or repulsion parameters, with accessibility, suitability and zoning being applied to support new land use allocation. Determinism is avoided and realistic human behaviour is imitated by applying stochastic perturbations to the model derived from probability distributions. Simple initial cell states transformed in this way through many model runs can give rise to patterns of great complexity, chaotic structure and, eventually, randomness. This key distinction, that is, autonomy and capacity to self-organize, is what gives true CA models their power to replicate artificial processes such as urban development with a high degree of success. Though there are a number of Free and Open Source Software (FOSS) applications presently available for other types of land use models, such as Huang's Change Analysis (logistic regression), and Purdue University's Land Transformation Modeller (LTM) (Artificial Neural Networks), there are few fully operational implementations of true CA models for land use modelling in the Open Source community. In addition, stand alone model frameworks do not usually incorporate appropriate statistical goodness-of-fit comparison techniques for model evaluation, something that is normally carried out externally in statistical software packages. In this paper, we discuss in detail our recent work to address these limitations by developing and testing a CA land use model for the R software environment. The R platform, with its extensive developer and user community, and its clear relevance for model building and scientific computing, seems to present an ideal environment for geographical land use modelling. The advantages offered by R as a development environment for a CA land use model are evaluated, and the pros and cons of the approach employed are discussed in depth with reference to commercial alternatives.

Topic type		Target Type
Case Studies: Relate your experiences. Benchmarks: Comparisons between packages. Development: new developments in products. Collaboration: data collection, data sharing, open standards.		End User Technical / Developer scientific modelling community

Additional Presenters
Name	Jaime Diaz-Pacheco
Organisation	Madrid Complutense University
Email	[e-mail]
Name	Borja Moya-G—mez
Organisation	Madrid Complutense University
Email	[e-mail]

ID Number

20

Name	Anton Bakker
Organisation	GeoCat
Email	[e-mail]

Paper Title	A future perspective on the sensor web
I can give a practical demo	yes

Paper Abstract (short)

The presentation of the current status of an Sensor Web Enablement (SWE) based ÒSensor WebÓ and a future perspective. As an example an application will be presented that integrates sensor data with data from an existing spatial data infrastructure.

Paper Abstract (long)

The Sensor Web Enablement (SWE) of framework has been around for almost ten years. The goal of the SWE is to enable the integration of sensors and sensor data into existing spatial data infrastructures. This presentation will look at in what extent this goal of the SWE framework has been achieved. Besides presenting the current state of SWE also a future perspective will presented. This future perspective is based on a series of interview with leading organizations in the adaption and usage of SWE standards in the Netherlands. From this future perspective, potential use cases will be presented for the integration of sensor data with existing spatial data infrastructures. One of these use cases will be presented as a functional open source application.

Topic type		Target Type
Case Studies: Relate your experiences. Hacks and Mashes: novel solutions to our problems. Collaboration: data collection, data sharing, open standards.		Technical / Developer

ID Number

215

Name	Olivier Courtin
Organisation	Oslandia
Email	[e-mail]

Paper Title	A new dimension to PostGIS : 3D
I can give a practical demo	yes

Paper Abstract (short)

Bringing 3D analysis functions to PostGIS, and play therefore with 3D rendering tools.

Paper Abstract (long)

Talking about 3D used to sound cool. Used to. But for real GIS use, we really need more than just playing with a globe. 3D in GIS becomes cool as soon as we have the ability to deal with full 3D spatial analysis. Just as we already have in 2D, we need functions like intersection, buffer, triangulation and more ... The GEOS library provides us 2D topological processing for years. The CGAL library could now also provide us some interesting additional 3D topological functions. As CGAL is not fully designed for GIS data models, we provide a library inbetween called SFCGAL, in charge of providing a Simple Feature API on top of CGAL. PostGIS 2.1 now allows to link PostGIS and (SF)CGAL, and already provides several exciting 3D functions (and more and more to come). This thrilling talk about PostGIS 3D will therefore focus on : - What kind of project / application needs 3D GIS analysis ? - What can we do right now with PostGIS 2.1 and (SF)CGAL ? - What we will be able to do soon with PostGIS 3D ? - Some tools used to view and manipulate 3D data (QGIS / WebGL based)

Topic type		Target Type
Development: new developments in products. New data: handling new data models, for example 3D & temporal data, or big data.		Manager Technical / Developer

Additional Presenters
Name	Hugo Mercier
Organisation	Oslandia
Email	[e-mail]

ID Number

65

Name	Dr. Robin S. Smith
Organisation	EC Joint Research Centre
Email	[e-mail]

Paper Title	A Reusable INSPIRE Reference Platform: supporting open source developments for INSPIRE implementation and reuse
I can give a practical demo	no

Paper Abstract (short)

The implementation of the European INSPIRE Directive will benefit from the reuse of a constellation of technical assets, including the key contribution of open source software; where the identification and sharing of components through a reference platform (ARE3NA) aims to provide additional benefits for those wanting to adopt interoperable cross-sector and cross-border geospatial data beyond the initial environmental policy context of INSPIRE.