1. Openstreetmap
Contributing
ICRC GIS officers - 24/08/2010
Frédéric Bonifas
fredericbonifas@gmail.com

2. Data sources

3. GPS
● Historical source of data
● Especially useful in rural areas
● Allow WMS layer rectification
● The more we get tracks, the more the map will
be accurate.

4. Aerial imagery
● Easy tracing of linear and area features
● Imagery currently used :
● Yahoo (big cities)
● Landsat
● Special cases : Haiti, Gaza, Kyrgyzstan, Pakistan...

5. Imports
● PGS coastlines
● CIA World Databank boundaries
● AND donated data in the Netherlands
● TIGER data in the USA
● etc

6. Other maps
● Compliant license needed (PD)
● Example : CIA maps
→ Perry-Castañeda Library Map Collection
http://www.lib.utexas.edu/maps/

7. Local knowledge
● Most valuable source of data
● accurate
● up-to-date
● many details (street names, POIs...)
● But also most difficult to find
● contributions mainly in Europe and urban areas
● areas without data are often where technology is
the less spread

8. Softwares

9. JOSM
● Powerful Java desktop editor
● WMS integration
● Data quality checks
● Plugins to add tools
● Custom preset attributes

10. JOSM

11. Potlatch
● Flash online editor
● WMS integration
● Easy editing
● Difficult to handle large amount of data

12. Potlatch

13. Potlatch 2
● Future live OSM editor
● Written in Flash
● Easily configurable and deployable

14. Potlatch2

15. Custom Potlatch2

16. Simple Map Editor (GSoC 2010)

17. Walking Papers
● Take notes on existing map
● Automatic orthorectification
● Edition on top of the annotated map
→ Everyone can participate
→ http://walking-papers.org/

18. Take notes

19. JOSM editing

20. Before/After

21. Data quality

22. Geometry and tagging control

23. Geometry and tagging control

24. Mapping completeness