Organisation terrestris GmbH & Co kg

Name	Jon Blower
Organisation	University of Reading
Email	[e-mail]

Paper Title	Communicating data quality through Web Map Services
I can give a practical demo	yes

Paper Abstract (short)

We shall demonstrate new developments in using Web Map Services to communicate data quality at the level of datasets, variables and individual samples, using a new set of conventions ("WMS-Q") and prototype software

Paper Abstract (long)

The sharing and visualization of environmental data through spatial data infrastructures is becoming increasingly common. However, information about the quality of data is frequently unavailable or presented in an inconsistent fashion. (ÒData qualityÓ is a phrase with many possible meanings but here we define it as Òfitness for purposeÓ Ð therefore different users have different notions of what constitutes a Òhigh qualityÓ dataset.) The GeoViQua project (www.geoviqua.org) is developing means for eliciting, formatting, discovering and visualizing quality information using ISO and Open Geospatial Consortium (OGC) standards. Here we describe one aspect of the innovations of the GeoViQua project. In this presentation, we shall demonstrate new developments in using Web Map Services to communicate data quality at the level of datasets, variables and individual samples. We shall outline a new draft set of conventions (known as ÒWMS-QÓ), which describe a set of rules for using WMS to convey quality information (OGC draft Engineering Report 12-160). We shall demonstrate these conventions through new prototype software, based upon the widely-used ncWMS free and open source software, that applies these rules to enable the visualization of uncertainties in raster data such as satellite products and the results of numerical simulations. Many conceptual and practical issues have arisen from these experiments. How can source data be formatted so that a WMS implementation can detect the semantic links between variables (e.g. the links between a mean field and its variance)? The visualization of uncertainty can be a complex task - how can we provide users with the power and flexibility to choose an optimal strategy? How can we maintain compatibility (as far as possible) with existing WMS clients? We explore these questions with reference to existing standards and approaches, including UncertML, NetCDF-U and Styled Layer Descriptors.

Topic type		Target Type
Visualization: effective presentation of information. Development: new developments in products. Collaboration: data collection, data sharing, open standards.		End User Technical / Developer

Additional Presenters
Name	Guy Griffiths
Organisation	University of Reading
Email	[e-mail]
Name	Charles Roberts
Organisation	University of Reading
Email	[e-mail]

ID Number

376

Name	Steven M. Ottens
Organisation	Geodan Research
Email	[e-mail]

Paper Title	Concurrent Online Webgis: a new way to map together
I can give a practical demo	yes

Paper Abstract (short)

A new way to share geodata in real time to create collaborative maps, using new HTML5 techniques like websockets and IndexedDB.

Paper Abstract (long)

Imagine a map on which many people collaborate at the same time. Imagine you see the edits happening in real time and you can also see the position of your collaborators and their current view on the map. A Google Docs for maps so you will. Imagine this map in a web-browser that runs on a mobile phone. Imagine not a single bit of data has to be stored on a central server but people are all acting as nodes storing the data in their browser.... and it still works offline..... With the rise of HTML5, including websockets and indexeddb, this is now possible. We created a concurrent online webgis where an unlimited amount of people can do collaborative work on a map in real time. A combination of Openlayers, Websocket and Indexeddb makes it possible to see and update each others edits and location. When people go offline their edits are stored for later synchronisation with their peers. This makes it very useful in unreliable network conditions. The tool has already been deployed in a few test cases. In low level educational projects where students share data with their smart-phone and create a common map. Also during wildfires where officers in the field regularly update the situation for the commanders in the control room. This is just the beginning, new HTML5 capabilities like WebRTC will open up new roads in map-making. Maps will become more dynamic and social, where (map)data will be directly shared between peers. Also if you get bored you get to make a map together with everybody else in the room.

Topic type		Target Type
Hacks and Mashes: novel solutions to our problems. Collaboration: data collection, data sharing, open standards.		End User Technical / Developer

Additional Presenters
Name	Tom van Tilburg
Organisation	Geodan Research
Email	[e-mail]

ID Number

211

Name	Oliver May
Organisation	Geomajas
Email	[e-mail]

Paper Title	Configuration Management for web GIS applications
I can give a practical demo	yes

Paper Abstract (short)

Birth of a configuration tool for Geomajas web GIS applications.

Paper Abstract (long)

With the release of the Geomajas Desk Manager and Runtime Config plug-ins, web GIS application developers get powerful building blocks for adding configuration management to their solutions. In this presentation we will guide you through the possibilities of these plug-ins and cover: - Use the configuration web interface (management console) - Create, configure and secure applications - Add data layers from external sources - Change the look and feel of your web application through widget configuration (supports a.o. layer tree, themes) - Add custom widgets to your application and provide configuration editors for them We will illustrate the new capabilities with hands-on demonstrations.

Topic type		Target Type
Visualization: effective presentation of information. Development: new developments in products.		People new to open source geospatial Manager End User Technical / Developer

Additional Presenters
Name	Frank Maes
Organisation	Geomajas
Email	[e-mail]

ID Number

438

Name	Vincent Heurteaux
Organisation	Geomatys
Email	[e-mail]

Paper Title	Constellation 1.0 : presentation of a powerful and user friendly SDI platform.
I can give a practical demo	yes

Paper Abstract (short)

The Constellation SDI project as been created 5 years ago to serve specific needs expressed by some actors of the oceanographic and more generaly the scientific domain. During that time the project has evolve to serve many other use-cases and has grown to be now considered mature enough to reach itÕs 1.0. This version propose a wide variety of services, to reach a better usability and to improve the user experience, a user interface has been developed to manage the services and itÕs back-end. This talk aims to present some original points of the project like itÕs usability and the variety of the services proposed.

Paper Abstract (long)

Since the presentation of the early phases of the project in the FOSS4G 2008 in Cape Town, the work on the project never stopped, and by the time it has grown, extending itÕs capabilities to CS-W 2.0.2, WFS 2.0, SOS 2.0, WMTS, WPS, completing WMS and WCS already there. We decide this year to release the first stable version of the project with the goal to give it a decent website and an useful user interface. This work has been leaded by an UX designer to give as much intuitiveness as possible, and facilitate webservices management. This presentation will show the overall functionality of the project, and the technical choices done to create both the back-end and the front-end of this project.

Topic type		Target Type
Visualization: effective presentation of information. Development: new developments in products.		Manager End User Technical / Developer

Additional Presenters
Name	FrŽdŽric Houbie
Organisation	Geomatys
Email	[e-mail]

ID Number

158

Name	Mark Hedley
Organisation	Met Office
Email	[e-mail]

Paper Title	Coordinate Reference System Challenges in Geoscince Modelling
I can give a practical demo	no

Paper Abstract (short)

Addressing the challenges of coordinate reference system support for geosciences modellers: do Well Known Text, Proj4 and EPSG deliver?

Paper Abstract (long)

Geoscience modellers develop numerical models where constraints are placed on how the model domain and sampling relates to location in the modelled world and the real world. The shape of the model domain is a significant factor for numerical algorithms and computational solvers. This leads to a number of interesting definitions of coordinate reference systems. I will summarise some requirements the modelling community have for specifying and working with coordinate reference systems. Post processing and presentation of analyses are important factors; archiving for future use is a crucial consideration. I will present examples of horizontal and vertical coordinate system definitions in common use in the meteorology and oceanography domains and the challenges they may bring. The conclusion will be a discussion how specifications and tools for defining, interpreting and transforming coordinate reference systems, such as Well Known Text (WKT), European Petroleum Survey Group (EPSG) and PROJ.4 are able or unable to meet the requirements of a geosciences modeller.

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.		Technical / Developer

ID Number

77

Name	Frank Warmerdam
Organisation	Google
Email	[e-mail]

Paper Title	Coordinate Systems: PROJ.4, EPSG and OGC WKT
I can give a practical demo	yes

Paper Abstract (short)

A practical review of coordinate systems.

Paper Abstract (long)

A practical review of how to identify and specify coordinate systems for applications built on PROJ.4, use of EPSG codes or use of OGC Well Known Text. Detailed examples will be given for a variety of coordinate system, including examples of how it would be used with applications such as MapServer, GRASS, GDAL/OGR, and PostGIS. However, the techniques should apply to any application built on the same representations.

Topic type		Target Type
Development: new developments in products.		People new to open source geospatial End User Technical / Developer

ID Number

320

Name	Silvia Franceschi
Organisation	HydroloGIS srl
Email	[e-mail]