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2 contributing

  1. 1. Openstreetmap Contributing ICRC GIS officers - 24/08/2010 Frédéric Bonifas fredericbonifas@gmail.com
  2. 2. Data sources
  3. 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. 4. Aerial imagery ● Easy tracing of linear and area features ● Imagery currently used : ● Yahoo (big cities) ● Landsat ● Special cases : Haiti, Gaza, Kyrgyzstan, Pakistan...
  5. 5. Imports ● PGS coastlines ● CIA World Databank boundaries ● AND donated data in the Netherlands ● TIGER data in the USA ● etc
  6. 6. Other maps ● Compliant license needed (PD) ● Example : CIA maps → Perry-Castañeda Library Map Collection http://www.lib.utexas.edu/maps/
  7. 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. 8. Softwares
  9. 9. JOSM ● Powerful Java desktop editor ● WMS integration ● Data quality checks ● Plugins to add tools ● Custom preset attributes
  10. 10. JOSM
  11. 11. Potlatch ● Flash online editor ● WMS integration ● Easy editing ● Difficult to handle large amount of data
  12. 12. Potlatch
  13. 13. Potlatch 2 ● Future live OSM editor ● Written in Flash ● Easily configurable and deployable
  14. 14. Potlatch2
  15. 15. Custom Potlatch2
  16. 16. Simple Map Editor (GSoC 2010)
  17. 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. 18. Take notes
  19. 19. JOSM editing
  20. 20. Before/After
  21. 21. Data quality
  22. 22. Geometry and tagging control
  23. 23. Geometry and tagging control
  24. 24. Mapping completeness

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