OSM/HOT training session introduction for the Stand By T

1. Openstreetmap and the
Humanitarian Openstreetmap Team
Stand By Task Force – 17 March 2013

2. OpenStreetMap
A web project to create a free and open map of the entire
world, built entirely from volunteers surveying with GPS,
digitizing aerial imagery, collecting and liberating existing
public sources of geographic data.
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3. History and stats
2004 : Start of OSM
2012 :
Users : + 1,000,000
Nodes : + 1,800,000,000
Ways : + 170,000,000

4. Community : State of the Map

5. Community : Mapping Parties

6. Wiki

7. Mailing lists

8. IRC

9. Forum

10. Governance
The ecosystem of the OSM community
Citizens
Associations
Local governments
NGOs
International Organizations (UN, WB)
Academia
Private actors:
• Google, Microsoft, Foursquare
• AND
• Cloudmade, Geofabrik, Camptocamp & DevelopmentSeeds
The growth of the OSM project is fostered by
• OpenStreetMap Foundation & local Chapters (France, Spain)
• Humanitarian OpenStreetMap Team (HOT) Hum/Dev contexts

11. Contributing : Tracing over imagery
Free, purchased, negociated

12. Contributing :
Survey

13. Contributing :
Data imports : Public Domain

14. Data primitives
Node : basic element
Latitude & longitude
Used for POIs
Way : ordered interconnection of nodes
Used for linear features
Closed Way : first and last nodes of the way identical
Used for areas
Relation : group of any primitives with associated roles
Used for relationships between objects and abstract
objects

15. Tags/attributes
• Tagging system fully flexible
• Strongly recommended to use the already existing, debated, approved and
described tags so that the OSM data remains consolidated as much as
possible.
• Wiki : http://wiki.openstreetmap.org/wiki/Map_Features

16. Web maps : ITO
http://www.itoworld.com/map/main

17. Walking Papers
http://walking-papers.org/
• Combined, GPS and Walking Papers can be
used for rapid surveying and ground truthing.
• Walking Papers allow users to print out small
sections of the OSM map. In the field, these
paper maps can be used to draw new
features, annotate existing data, and take
notes that will help with the import of GPS
data.
• Icons in each of the corners and a unique
code for each Walking Paper let users scan
the paper and upload to OSM so the notes
can be viewed in an editing environment.

18. Openrouteservice.org
http://www.openrouteservice.org

19. Garmin Maps

20. Android
Osmand
Browsing
Routing
Editing
Osmtracker
Survey

21. Uses
Downloading OSM data
http://download.geofabrik.de

22. Uses
HOT Export Tool
http://hot-export.geofabrik.de

23. Documentation : Floss manual
http://www.flossmanuals.net/openstreetmap

24. Documentation :
Learnosm.org
http://www.learnosm.org

25. Documentation : mapping
checklist

26. Quality
Muki Haklay (UCL) : positionning accuracy
• United Kingdom: OSM - Ordnance
Survey Meridian II database
• Haiti: OSM - GoogleMapMaker -
MINUSTAH/CNIGS
The analysis shows that, where OSM was
collected by several users and benefited
from some quality assurance, the quality
of the data is comparable and can be fit
for many applications.
The positional accuracy is about 6 metres,
which is expected for the data collection
methods that are used in OSM. The
comparison of motorways shows about
80% overlap between OSM and OS .