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Last week, I traveled to Salzburg to attend the 30th AGIT conference and co-located English-speaking GI_Forum. Like in previous year, there were a lot of mobility and transportation research related presentations. Here are my personal highlights:

This year’s keynotes touched on a wide range of issues, from Sandeep Singhal (Google Cloud Storage) who – when I asked about the big table queries he showed – stated that they are not using a spatial index but are rather brute-forcing their way through massive data sets, to Laxmi Ramasubramanian @nycplanner (Hunter College City University of New York) who cautioned against tech arrogance and tendency to ignore expertise from other fields such as urban planning:

One issue that Laxmi particularly highlighted was the fact that many local communities are fighting excessive traffic caused by apps like Waze that suggest shortcuts through residential neighborhoods. Just because we can do something with (mobility) data, doesn’t necessarily mean that we should!

Not limited to mobility but very focused on open source, Jochen Albrecht (Hunter College City University of New York) invited the audience to join his quest for a spatial decision support system based on FOSS only at bit.ly/FiltersAndWeights and https://github.com/geojochen/fosssdss

The session Spatial Perspectives on Healthy Mobility featured multiple interesting contributions, particularly by Michelle P. Fillekes who presented a framework of mobility indicators to assess daily mobility of study participants. It considers both spatial and temporal aspects of movement, as well as the movement context:

Figure from Michelle Pasquale Fillekes, Eleftheria Giannouli, Wiebren Zijlstra, Robert Weibel. Towards a Framework for Assessing Daily Mobility using GPS Data. DOI: 10.1553/giscience2018_01_s177 (under cc-by-nd)

It was also good to see that topics we’ve been working on in the past (popularity routing in this case) continue to be relevant and have been picked up in the German-speaking part of the conference:

Of course, I also presented some new work of my own, specifically my research into PostGIS trajectory datatypes which I’ve partially covered in a previous post on this blog and which is now published in Graser, A. (2018) Evaluating Spatio-temporal Data Models for Trajectories in PostGIS Databases. GI_Forum ‒ Journal of Geographic Information Science, 1-2018, 16-33. DOI: 10.1553/giscience2018_01_s16.

My introduction to GeoMesa talk failed to turn up any fellow Austrian GeoMesa users. So I’ll keep on looking and spreading the word. The most common question – and certainly no easy one at that – is how to determine the point where it becomes worth it to advance from regular databases to big data systems. It’s not just about the size of the data but also about how it is intended to be used. And of course, if you are one of those db admin whizzes who manages a distributed PostGIS setup in their sleep, you might be able to push the boundaries pretty far. On the other hand, if you already have some experience with the Hadoop ecosystem, getting started with tools like GeoMesa shouldn’t be too huge a step either. But that’s a topic for another day!

Since AGIT&GI_Forum are quite a big event with over 1,000 participants, it was not limited to movement data topics. You can find the first installment of English papers in GI_Forum 2018, Volume 1. As I understand it, there will be a second volume with more papers later this year.


This post is part of a series. Read more about movement data in GIS.

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AGILE 2017 is the annual international conference on Geographic Information Science of the Association of Geographic Information Laboratories in Europe (AGILE) which was established in 1998 to promote academic teaching and research on GIS.

This years conference in Wageningen was my time at AGILE.  I had the honor to present our recent work on pedestrian navigation with landmarks [Graser, 2017].

If you are interested in trying it, there is an online demo. The conference also provided numerous pointers toward ideas for future improvements, including [Götze and Boye, 2016] and [Du et al., 2017]

On the issue of movement data in GIS, there weren’t too many talks on this topic at AGILE but on the conceptual side, I really enjoyed David Jonietz’ talk on how to describe trajectory processing steps:

Source: [Jonietz and Bucher, 2017]

In the pre-conference workshop I attended, there was also an interesting presentation on analyzing trajectory data with PostGIS by Phd candidate Meihan Jin.

I’m also looking forward to reading [Wiratma et al., 2017] “On Measures for Groups of Trajectories” because I think that the presentation only scratched the surface.

References

[Du et al, 2017] Du, S., Wang, X., Feng, C. C., & Zhang, X. (2017). Classifying natural-language spatial relation terms with random forest algorithm. International Journal of Geographical Information Science, 31(3), 542-568.
[Götze and Boye, 2016] Götze, J., & Boye, J. (2016). Learning landmark salience models from users’ route instructions. Journal of Location Based Services, 10(1), 47-63.
[Graser, 2017] Graser, A. (2017). Towards landmark-based instructions for pedestrian navigation systems using OpenStreetMap, AGILE2017, Wageningen, Netherlands.
[Jonietz and Bucher, 2017] Jonietz, D., Bucher, D. (2017). Towards an Analytical Framework for Enriching Movement Trajectories with Spatio-Temporal Context Data, AGILE2017, Wageningen, Netherlands.
[Wiratma et al., 2017] Wiratma L., van Kreveld M., Löffler M. (2017) On Measures for Groups of Trajectories. In: Bregt A., Sarjakoski T., van Lammeren R., Rip F. (eds) Societal Geo-innovation. GIScience 2017. Lecture Notes in Geoinformation and Cartography. Springer, Cham


This post is part of a series. Read more about movement data in GIS.

The 1st European State of the Map Conference (SotM-Europe) will be held July 15-17 in Vienna, Austria. So far, there have been 4 International State of the Map conferences. This will be the first European edition of this event.

Topics include:

  • Mapping (mapping, data, tagging, the state of the map in your country, etc…)
  • TechTalks (development, rendering and infrastructure)
  • Powered by OpenStreetMap (projects/business ideas based on OpenStreetMap)
  • Convergence (open geo data world vs. the world of proprietary and authoritive data and software)
  • Research (for researchers working with OpenStreetMap data)
  • Others (other interesting information)

The call for papers is still open until Monday, February 28 2011.

The international conference will be held in Denver, Colorado from September 9-11 2011.

The “1st Conference on Spatial Statistics 2011” is going to take place from 23rd – 25th of March 2011 at the University of Twente, Enschede, The Netherlands. Topics include:

  • Mapping global change
  • Spatial and spatio-temporal statistical methodology
  • Environmental issues
  • Ecological and habitat changes
  • Health and epidemiology
  • Economy and energy
  • Image use and analysis
  • Developing countries

FOSSGIS is the biggest German-speaking user conference for free geographic information systems and free geodata. It’s taking place at the university of Heidelberg from April, 5th – 7th 2011. The Call for Papers is open until November, 29th 2010.

The conference focuses primarily on a German audience. However, the program committee will also consider applications for talks or workshops held in English if they are deemed to add to the quality of the conference. So if you don’t speak German, but are a FOSS/Open Data celebrity, or have a story that only you can tell, do submit your talk.

FOSS4G 2010 conference in Barcelona is coming closer and closer. Have a look at this year’s presentations. Presentations are held on a variety of topics including:

Web Mapping

  • Web Mapping Performance Shootout
  • Web Map Printing with GeoExt
  • Printing in web mapping application: MapFish print module
  • GeoExt and MapFish Client components – how to migrate
  • Where’s MapFish going?
  • A typification of Open Source web mapping client software and frameworks
  • GeoServer CSS – Mapping in Style
  • GeoServer cartographic rendering: new features for map makers
  • Graphical style editing with Styler: Make a basemap without seeing SLD
  • WMS Inspector: a Firefox add-on with tools for working with Web Map Services
  • Performance and statistical analysis of WMS servers
  • Adding custom search engines to OpenLayers with OpenSearch ‘geo’
  • What You Type Is What You See: Comparing two web-based open source approaches to display the results of spatial SQL queries
  • OldMapsOnline.org: Open Source & Online Tools for Old Maps
  • OpenStreetMap-in-a-Box – A Ready-Made Highly Configurable Map Server
  • MapProxy -An accelerating proxy for web map services
  • TileSeeder; a new tile management tool
  • TileCache, GeowebCache and MapProxy – a technical and usability comparison
  • Developing Desktop-like Web GIS Applications with HTML and JavaScript
  • Squeeze: Configuring MapServer and KML to Get The Most Out Of Google Earth
  • PostLBS – Universal WebAPI Platform for Visualizing Geospatial Analysis–Routing, Geocoding, Thematic Mapping and More!
  • Implementing Open Source Tile Caching in a Large Scale US Army Project
  • OpenLayers’ Future
  • Performance Considerations In OpenLayers Based Web Mapping
  • Putting things together: Geonetwork opensource, OpenLayers, GeoExt and MapFish under the roof of Drupal CMS – Geoportal RO as an example
  • MapServer Project Status
  • Hidden features and useful tips for MapServer powerusers
  • Raster data support in GeoServer and GeoTools: recent achievements, unsolved issues and future developments

WPS

  • GeoServer WPS: an integrated, extensible processing service
  • 52º North WPS framework with ArcGIS geoprocessing support – Open Source solution meets closed source software
  • ZOO Project: The powerful WPS Platform
  • Compliance Testing of Open Source software for Web Processing Services
  • Introducing deegree 3 WPS
  • EnviModel: scientific workflows and WPS geoprocessing for climate change
  • Hybrid Cloud Computing for FOSS4G

Training & Education

  • Using Open Source Software in GIS Training and Education
  • Interactive METEOSAT: Educational platform for meteorological applications entirely developed with FLOSS software
  • Why Schools must use FOSS4G

Sensor Web

  • Building a New Generation of Sensor Web Implementations for Hydrology
  • Performance of the 52º North SOS in a real application environment
  • Comparison of SOS-Servers: 52°North, UMN and deegree
  • SOS vs. WFS – Coupling 52° North’s Sensor Observation Service and Geoserver‘s Web Feature Service
  • The New Time Series Toolbox – Next Generation of Sensor Web and Time Series Processing
  • istSOS: Sensor Observation Service in Python
  • How to Discover Sensors in the Sensor Web?

Misc

  • Mobile Augmented Reality using FOSS
  • Vertical Datums: Introduction and Software Review
  • Building a consistent and transparent legal and policy framework for spatial data
  • ecoRelevé: An open source response to the biodiversity crisis
  • GeoSocial, a tool for geospatial analysis and data mining of social networks
  • Real-time position analysis during soccer matches
  • Comparison of Open Source Virtual Globes
  • deegree project report: past, present, future
  • From the crowd sourcing to the institutional sourcing: a way to cooperate between regional and local administration
  • Gesopatial Desktop Comparison
  • Neo4j Spatial – backing a GIS with a true graph database
  • Bridging the Gap Between Open Source Tools and Proprietary Data Sources
  • Open source Geospatial Business Intelligence in action with GeoMondrian and SOLAPLayers!
  • Protect your GIS
  • Introducing OpenScales
  • OSSIM – advanced open source remote sensing
  • State of the art of FOSS4G for topology and network analysis
  • Bringing the raster processing algorithms of the Orfeo Toolbox Monteverdi in QGIS
  • A geospatial data collection system for organisations
  • GeoREST: Open Web Access to Public Geodata Based on Atom Publishing
  • Distributed Spatial Indexing in the Cloud
  • Integrating SEXTANTE and GRASS
  • GeoCat Bridge – One click data publishing
  • Semantic Web approach for thematic structuring of geographic objects
  • Semantic search in OGC Catalog Services for the Web
  • BeETLe project: a free geospatial ETL tool
  • GeoKettle: A powerful open source spatial ETL tool
  • Geomajas: new kid on the block

OSGeo

  • The State of OSGeo
  • International Collaboration on the OSGeo4W
  • OSGeo:Open Source Projects and Communities
  • The OGC and its participatory processes: OGCnetwork, open WG, regional Fora and the collaboration with OSGeo

Mobile & 3D GIS

Inspire & SDIs

  • OpenLayers: SOS and INSPIRE
  • State of Ingres geospatial 2010
  • INSPIRE Geoportal a platform for INSPiRE services
  • Implementing INSPIRE with FOSS4G: a Success Story
  • GeoNetwork opensource – The geospatial metadata catalogue
  • Implementation of ISO and OGC (INSPIRE) metadata standards – MEDARD (FOSS) metadata editor and Internet Geoinformation Metadata Platform (IPMGeo)
  • Authentication and authorization management to OGC services with GeoShield: improvements from FOSS4G 2009
  • License and Permission-based access to OGC Web Services with 52°North
  • Deploying and securing Spatial Data Infrastructures (SDI) with GISpatcher
  • Metadata Reloaded – How to profit from INSPIRE
  • GeoNode Architecture: Wrangling $100 million worth of open source software to make SDI building a walk in the park

PostGIS & PGRouting

  • Shortest path search for real road networks with pgRouting
  • An extension of PGRouting library functions for visibility-graph-based course calculations in a Vessel Traffic Management System (VTMS)
  • Tips for the PostGIS Power User
  • Running long and complex processes with PostGIS
  • PostGIS meets the third dimension
  • Introducing PostGIS WKT Raster: Seamless raster/vector operations in a spatial database
  • PostGIS WKT Raster. An Open Source alternative to Oracle GeoRaster
  • The State of PostGIS
  • Moving from Oracle/ArcGIS to PostGresql/PostGIS

Other Geodatabases

  • Geospatial Indexing with MongoDB
  • GeoCouch: A spatial index for CouchDB
  • Beyond PostGIS – New developments in Open Source Spatial Databases
  • SpatiaLite, the Shapefile of the future?

GIS Data

Applied GIS & Use Cases

  • A WebGIS application to monitor Road Trafic
  • GeoServer, GeoTools, GeoBatch: relying on the “usual suspects” for supporting operational Meteorology and Oceanography
  • Building the Digital Observatory for Protected Areas on an Open Source Framework
  • Open-source Earthquake and Hydrodynamic Modelling
  • Open Environmental Services Infrastructure
  • Case Study: Upgrading Guatemala’s SDI portal to a GeoNode
  • Proprietary to FOSS: MapServer as a key component in the map distribution infrastructure of the Norwegian SDI
  • Applied SDI in Germany – Complying with INSPIRE
  • Coming Full Circle: Archaeology and Open Source GIS, Past, Present and Future
  • Open Government, Open Data, Open Architecture and Open Source Software GIS Policy for U.S. Army Installation Management: 2010
  • Operational use of the Orfeo Tool Box for the Venus Mission
  • Enhancing the European Forest Fire Information System (EFFIS) with Open Source Software
  • ArchaeoloGIS: OSGIS in Archaeological Research
  • The World Meteorological Oganization Information System
  • Introduction of flood evacuation route search system using QGIS, PostGIS, GRASS and PgRouting
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