The Explosion of Geodata


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The Explosion of Geodata. A presentation about the abundance of geodata that has recently become openly available, where it has come from, and what we might be able to do with it.

Presented at WhereCampEU, London, 2010.

Published in: Technology, Business
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The Explosion of Geodata

  1. 1. The Explosion of Geodata Ben Dowling WhereCampEU 2010
  2. 2. Loads of Data! There is so much geodata available now. Where has it all come from?
  3. 3. Where is it from? Data has been collected by organisations or dedicated volunteers and made publicly available: <ul><li>Yahoo! Geo
  4. 4.
  5. 5. Open street map </li></ul>
  6. 6. What about the rest? The “explosion” though has come from crowdsourced geo-tagged data
  7. 7. We know where you are! With automatic location detection actions can be geo-tagged without requiring any effort from the user.
  8. 8. While your out and about A significant amount of mobile phones are now location aware <ul><li>Android, iPhone, Blackberry, other smartphones </li></ul>Location detection technologies include: <ul><li>GPS
  9. 9. Base station triangulation
  10. 10. WiFi positioning (SkyHook) </li></ul>
  11. 11. When your at home There are PC based technologies to work out where you are when you're at home: <ul><li>IP Address Geolocation
  12. 12. FireEagle
  13. 13. WiFi (Skyhook)
  14. 14. W3C Geolocation </li></ul>
  15. 15. What's being geo-tagged? <ul><li>Your location (Gowalla, FourSquare, Google Latitude)
  16. 16. POIs (Gowalla, FourSquare, Yelp!, Qype)
  17. 17. Photos (Flickr)
  18. 18. Status updates (Twitter) </li></ul>
  19. 19. Even more data? <ul><li>Further smartphone adoption
  20. 20. Smartphone improvements (better battery life)
  21. 21. More location aware devices </li><ul><li>Transport
  22. 22. Cameras </li></ul><li>Privacy concerns addressed
  23. 23. We can geo-tag everything! </li></ul>
  24. 24. Where is this data? There is lots of geo-tagged data. How can you get at it?
  25. 25. Open APIs The majority of the services mentioned provide open APIs allowing you to access their geodata: <ul><li>Yelp!
  26. 26. Qype
  27. 27. FourSquare
  28. 28. Yahoo! Geo
  29. 29. Twitter
  30. 30. Flickr </li></ul>
  31. 31. Loads of APIs There has also been an explosion of services, so accessing all available information for a given location could require communicating with 10 different APIs!
  32. 32. Geodata Services Some services have popped up which provide aggregate geodata from the different services: <ul><li>SimpleGeo
  33. 33. GeoAPI </li></ul>
  34. 34. What to do with all the data? There is lots of geo-tagged data. What interesting things can we do with it?
  35. 35. Existing applications <ul><li>Friends around you
  36. 36. POIs around you
  37. 37. Recommend nearby places
  38. 38. Give you directions </li></ul>
  39. 39. The best has yet to come <ul><li>The abundance of open geodata is relatively new
  40. 40. Automatic location detection is relatively new
  41. 41. The most interesting and useful applications have yet to be realised </li></ul>
  42. 42. Thank you! Ben Dowling [email_address] @coderholic