Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in the manual
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.
OpenStreetMap - opendataweek - June 26th 2013
Christian Queston 26 June 2013
Transcript of OpenStreetMap - opendataweek - June 26th 2013
The collaborative and free
editable map of the world
Started in 2004
Geographic data wiki
1.2+ millions user accounts signed in
+80% growth in 2012
2.1+ billions objects in the worldwide database
Transport en commun
200 to 300 active contributors daily
1000+ km of roads, paths added daily
non profit association, created in october 2011
its goal: promote OSM adoption
more than 96% main roads
Intégration dans OpenStreetMap
données importées en masse
intégrées après contrôle unitaire
harmonisation de données hétérogènes
Amélioration de données opendata
données corrigées par les contributeurs
enrichissement par de nouveaux attributs
SNCF, RFF, RATP, cadastre (bâti, routes),
adresses (Nantes, Montpellier, Lyon, etc), ...
Long term opendata ?
• virtuous circles
• stable datasets
• partnerships and agreements
openstreetmap.org / openstreetmap.fr
Christian Quest @cq94
to crowdfixing !
opendata / OpenStreetMap
Public sector opendata
started with mid-size towns (Brest, Rennes)
government portal since december 2011
producer can benefit from crowdfixing
harmonized data are easier to reuse
access to single/common API
around 3000 monthly
10% of OSM worldwide activity
So what ?
and... data became
streets and roads
under ODbL license
Pre-existing data in OSM
Manual check is needed
> mass import impossible
> semi-manual merge
Tool developed to help OSM contributors merge data one street at a time with human control
more than 8 months of work
Example: Nantes Métropole postal address dataset
Updated data went back to producer
before opendata and because
of opendata !
Semi-public sector opendata
early contacts with RATP (Paris public
and SNCF (national railways)
• Too late to import as is
• Quality not as expected
harmonization to one semantic model
error fixing, update by resurvey
Better data !
win / win
happy ending :-)
(Paris publ. transp.) :
subway/tram station dataset
bicycle rental stations
same story with...
opendata needs long term view
• stable (shared) data structures
• long term availability
• dataset updates
Long term ?
Data re-use simplified
SNCF / OSM-FR : signed last week
Access to cadastre raw data* signed with local authorities
* not fully opendata...
Long term thru Partnerships ?
OSM-FR/SNCF example :
Train station wheelchair access
involving non (yet) OSM
Partnerships involving communities