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General informations on OpenStreetMap

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1 general

  1. 1. Openstreetmap General ICRC GIS officers - 24/08/2010 Frédéric Bonifas fredericbonifas@gmail.com
  2. 2. What is Openstreetmap ?
  3. 3. Openstreetmap ? ● Collaborative project to create a free and open map of the world ● Database of geographical vector data ● Wiki-style editing = +
  4. 4. Why does OSM exist ? ● Most other maps are non-free (eg : hard to get Google MapMaker for Kyrgyzstan) ● Vector data for custom maps is difficult to obtain ● Users can improve the map ● Fast updates ● Commercial maps have intentional errors to prevent copy ● Many areas of the world are mapped poorly ● Specialty maps ● Innovative uses
  5. 5. Innovative use ? OSM cake !
  6. 6. History ● Aug 2004 : Creation of OpenStreetMap ● March 2006 : OSM on Garmin GPS ● Dec 2006 : tracing over Yahoo aerial imagery allowed ● July 2007 : First international conference (State of the Map) ● 2008 : TIGER import in the US ● July 2010 : OSM used by MapQuest and Bing
  7. 7. Technical side
  8. 8. 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
  9. 9. Attributes ● Attributes for differentiation of each data primitive ● No restriction on tags assigned to elements : use any attributes you want ! ● Frequently used attributes are documented → http://wiki.openstreetmap.org/wiki/Map_Features
  10. 10. Map Features
  11. 11. Which features ? ● Buildings ● Road signs ● Streets and roads ● Amenities and shops ● Boundaries ● Pedestrian and bicycle ● Landuse ● Hydrography informations ● Public transport
  12. 12. Community
  13. 13. Who is participating ? ● Citizens and associations ● Private societies ● Google, Yahoo ! ● AND ● Cloudmade, Geofabrik, Camptocamp ● Organizations ● Local governments ● NGOs
  14. 14. Important growth 290000 contributors 1,9 billion GPS points 740 million nodes 60 million polylines
  15. 15. Mapping parties
  16. 16. State of the Map
  17. 17. Governance Needs ● Represent the OSM community ● Money and servers management ● Legal aspect Structures ● OpenStreetMap Foundation ● Local chapters ● Humanitarian OpenStreetMap Team

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