2014-04-17 Sync Norwich Introduction to OpenStreetMap Shaun McDonald

An introduction to OpenStreetMap as presented at Sync Norwich on 17th April 2014.

Transcript

1. 17th April 2014 SyncNorwich: Introduction to OpenStreetMap Shaun McDonald
2. Show of hands
3. Have you heard of OpenStreetMap before?
4. Have you edited OpenStreetMap before?
5. Have you used OpenStreetMap data as a developer?
6. Do you use OSM maps as an end user?
7. About Me ❖ Came across OpenStreetMap back in March 2007! ❖ Started editing in Edinburgh! ❖ Moved to London to work for CloudMade in April 2008! ❖ Wrote significant portion of API 0.6! ❖ Helped run various mapping parties and conferences over the years! ❖ Moved to Ipswich to work for ITO World in June 2012
8. Why OpenStreetMap? ❖ Started by Steve Coast in 2004 after problems with cost of geo data from the Ordnance Survey! ❖ Licensing problems for what the data could be used for, thus innovation stifled! ❖ Custom rendering for specialist maps! ❖ Custom routing engines! ❖ Offline maps! ❖ Fabric
15. Real world OSM usage
16. CycleStreets ❖ First journey planner for cyclists in the UK! ❖ Available on the web, mobile, apps, and API for developers! ❖ Integrated into various cycle campaign organisations and local authority websites! ❖ http://www.cyclestreets.net/ ! ❖ http://cycle.st/j40333132
17. Haiti ❖ Disaster relief! ❖ Remote mapping! ❖ Obtaining imagery! ❖ Humanitarian OpenStreetMap Team (HOT) formed shortly afterward for future disasters! ❖ @hotosm! ❖ http://hot.openstreetmap.org/ ! ❖ http://vimeo.com/9182869
18. Bus stop timetable posters ❖ ITO World produce web tools for creating bus stop timetable posters! ❖ Used in Norfolk, and various other regions! ❖ Map of the area around the bus stop is useful for people getting off the bus
19. Splash Maps ❖ Problems with licensing Ordnance Survey data! ❖ Comes from the problem of travelling with paper maps getting wet and hard to fold! ❖ Use a combination of Open Ordnance Survey and OpenStreetMap data! ❖ http://www.splashmaps.net/
20. Foursquare ❖ In March 2012, Foursquare switched to using OSM through MapBox! ❖ Google Maps introduced charging for bigger users of their maps! ❖ https://foursquare.com/about/osm ! ❖ https://www.mapbox.com/blog/ foursquare-switches-mapbox-streets- openstreetmap/
21. Editing OpenStreetMap data
22. Editing cycle Spot error or missing data in OSM Collect data from the ground! or from local knowledge Change the data in an editor and upload/save See the changes appear on maps ❖ http://learnosm.org/en/
23. Data collection ❖ Pen and paper! ❖ http://walking-papers.org/ ! ❖ GPS (phone or dedicated)! ❖ Mobile phone! ❖ Camera! ❖ Video! ❖ Audio
24. Editing OSM: iD ❖ Newest mainstream editor! ❖ Default editor! ❖ Javascript based! ❖ Simplest for beginners! ❖ Don’t need to worry 
 about data model! ❖ Localised presets
25. Editing OSM: Potlatch 2 ❖ Previous default editor! ❖ Adobe Flash based! ❖ Still has some advanced features that are not available elsewhere
26. Editing OSM: JOSM ❖ Desktop editor! ❖ Java! ❖ Aimed at advanced users! ❖ People used to GIS packages may find it easier to use
27. Editing OSM: Vespucci ❖ Android mobile editor! ❖ Ideal for small on the ground edits! ❖ Uses JOSM presets
28. Editing OSM: Go Map! ❖ iOS editor! ❖ Ideal for small on the ground edits! ❖ Can be used by beginners
29. Data Model
30. Data Model: Nodes ❖ Single points! ❖ Examples:! ❖ Bus stops, Stations! ❖ Bicycle parking, playgrounds, benches! ❖ Post boxes! ❖ Places! ❖ Shops, offices, restaurants, cafes! ❖ Traffic lights, traffic calming
31. Data model: Ways ❖ Lines and areas (closed ways)! ❖ Examples:! ❖ Roads, paths, ferry routes! ❖ Building outlines! ❖ Car parks, playgrounds! ❖ Rivers, lakes, coastline! ❖ Forest, fields, parks
32. Data model: Relations ❖ Ordered collections of nodes, ways, and relations! ❖ Examples:! ❖ Bicycle, walking, bus routes! ❖ Complex buildings e.g. courtyards! ❖ Turn restrictions! ❖ Multipolygons
33. Data model: Tags ❖ Tags are on all nodes, way, relations and changesets! ❖ Key/value pairs! ❖ Maximum of 255 characters! ❖ http://www.osm.org/way/170636121
34. Data model: Changesets ❖ Groups of changes grouped together! ❖ Not atomic like source control! ❖ Diff uploads are atomic however! ❖ Includes a comment so that others know where you got the data from or what changes you have made and potentially why
35. Data model: Notes ❖ Completely separate data structure.! ❖ Similar to a bug tracker for software, but instead for the map data! ❖ API available to integrate viewing and creation in your own site
36. Using OSM data in your own projects
37. Map Tiles ❖ Slippy maps are made up of lots of 256x256 PNG images tiled together! ❖ JS libraries such as OpenLayers and Leaflet use the images to produce the map! ❖ Small personal project or prototype can use the main OSM tiles! ❖ Some tile providers such as MapQuest and MapBox! ❖ Run your own tile server! ❖ http://switch2osm.org/
38. Geocoding ❖ Where is Norwich? Where are the cafes in Norwich?! ❖ Reverse geocoding: where am I?! ❖ Nominatim is the main OSM software providing geocoding
39. Routing ❖ How do I get from A to B?! ❖ Many options for running your own service! ❖ Different modes of transport! ❖ Different preferences for the journey
40. Editing API ❖ For editing OSM data! ❖ Can use for creating and commenting on notes from your own site! ❖ XML based! ❖ http://wiki.osm.org/wiki/API_v0.6
41. Planet file and extracts ❖ Can download all of the data in the world from planet.osm.org ! ❖ Various extracts available to country or county level! ❖ Minutely, hourly and daily diffs available
42. Overpass ❖ API to easily extract OSM data with queries! ❖ XML commands to choose which data to extract! ❖ http://wiki.openstreetmap.org/wiki/ Overpass_API
43. Questions? Shaun McDonald! shaun@shaunmcdonald.me.uk! @smsm1
44. Photo Acknowledgements ❖ All photos/screenshots my own, or otherwise mentioned! ❖ https://www.flickr.com/photos/merille/8076026375 - Hands in air! ❖ https://www.flickr.com/photos/smsm1/9096807300/ - Presenter! ❖ http://hot.openstreetmap.org/updates/ 2011-03-15_haiti_osm_mapping_for_japan_and_libya - HOT team