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![Company Headlines anyone??
select * from html where
url="http://finance.yahoo.com/q?
s=YHOO" and xpath=‘//
div[@id="yfi_headlines"]/div[2]/ul/
li/a’](https://image.slidesharecdn.com/yqlwithgeo-110916110708-phpapp01/75/Yql-with-geo-27-2048.jpg)
![url structure
http://query.yahooapis.com/v1/yql?[params]
http://query.yahooapis.com/v1/public/yql/
[params]
Params
• q = [ YQL QUERY ]
• format = [ XML / JSON ]
• diagnostics = [ true / false ]
• debug = [ true / false ]
• callback = [ function name ]](https://image.slidesharecdn.com/yqlwithgeo-110916110708-phpapp01/75/Yql-with-geo-32-2048.jpg)
Uploaded byPrajwal ShelvaPillai
Yql with geo
The document discusses YQL and its capabilities for accessing and manipulating data from web services and APIs. It provides an overview of YQL and demonstrates how to use it for tasks like querying YouTube, Flickr, and Twitter as well as inserting, updating, and deleting data. It also discusses how YQL can be used to perform various geographic data tasks like geocoding, reverse geocoding, finding place hierarchies, and geo-tagging information from text.
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Yql with geo
- 1. YQL and GEO Prajwal BS Developer, Hacker, Evangelist
- 2. Agenda • YQL Overview • Making Queries and the Console Sandbox • Demo • Geo Hacking • YQL and GEO
- 3. Hacking together systems in24 hours is lot of fun
- 4. Data manipulation Hacks = + Data visualization
- 5. The web haslot of data around
- 6.
- 7. Yahoo! has also openedup its data
- 8.
- 9. The trouble withdata • You need to find data API • Get Access – Signup for key • Find data endpoint • Read docs to learn what parameters you have • Get data in obscure format • Use data after converting and filtering • More APIs you use, more is your annoyance
- 10. To make dataaccess easy on the web, Yahoo! created YQL
- 11. YQL turns web servicesand data on the web into databases.
- 12. YQL lets youaccess almost all API’s in a standardized manner.
- 13. API List onconsole
- 14. select {what} from{where} where {conditions}
- 15. You can select,filter, sort and limit data and you can even insert, update and delete from it.
- 16.
- 17. Finding Videos aboutIIT-M SELECT * FROM youtube.search where query=’IIT Madras'
- 18. Selecting Photos ofHackday SELECT * FROM flickr.photos.search where text="hackday” SELECT * FROM flickr.photos.search where text="hackday” LIMIT 5
- 19. Inserting data INSERT INTObitly.shorten (login, apiKey, longUrl) VALUES ('ME', 'API_KEY', 'http://yahoo.com')
- 20. updating data UPDATE social.profile.status SETstatus="Using YQL UPDATE” WHERE guid="NJFIDHVPVVISDX7UKED2WHU"
- 21. Accessing Private Data http://query.yahooapis.com/v1/yql Uses OAuth 1.0 for authorization OAuth is complicated – use one of our SDKs https://github.com/yahoo
- 22. Retrieving my profile SELECT* FROM social.contacts WHERE guid=me
- 23. Mix and Matchseveral web services using IN command
- 24. Guess what thisdoes? select * from google.translate where q in (select text from twitter.search where q='hacku') and target='hi';
- 25.
- 26. How about theseformats Atom Json Csv Microformats Feed Rss Html xml
- 27. Company Headlines anyone?? select * from html where url="http://finance.yahoo.com/q? s=YHOO" and xpath=‘// div[@id="yfi_headlines"]/div[2]/ul/ li/a’
- 28.
- 29. Using the YQL Consolemakes it very easy to use it.
- 32. url structure http://query.yahooapis.com/v1/yql?[params] http://query.yahooapis.com/v1/public/yql/ [params] Params • q = [ YQL QUERY ] • format = [ XML / JSON ] • diagnostics = [ true / false ] • debug = [ true / false ] • callback = [ function name ]
- 33.
- 34. GEO HACKING • GOODNEWS! - Not hard to do. • YQL as always has a solution to most geo problems.
- 35. REQUIREMENTS • Finding currentlocation. • Turning a location into a place. • Finding geographical hierarchy. • Geo-tagging information. • Displaying geo information.
- 36. Current Location IP Sniffing W3C geolocation API User Social presence (foursquare, twitter, flickr etc.)
- 37. REQUIREMENTS • Finding currentlocation. • Turning a location into a place. • Finding geographical hierarchy. • Geo-tagging information. • Displaying geo information.
- 38. GEOCODING AND REVERSE-GEOCODING • converting street addresses or place names into geographic coordinates (and vice versa). h"p://developer.yahoo.com/yql/console/#h=desc%20geo.placefinder
- 39. YQL to therescue select * from geo.placefinder where text="IIT Madras India" select * from geo.placefinder where text="13.063970,80.243110" and gflags="R"
- 40. REQUIREMENTS • Finding currentlocation. • Turning a location into a place. • Finding geographical hierarchy. • Geo-tagging information. • Displaying geo information.
- 41. YQL GEO.PLACES.* • geo.places.ancestors • geo.places.belongtos • geo.places.children • geo.places.common • geo.places.descendants • geo.places.neighbors • geo.places.parent • geo.places.siblings
- 42. REQUIREMENTS • Finding currentlocation. • Turning a location into a place. • Finding geographical hierarchy. • Geo-tagging information. • Displaying geo information.
- 43. PLACEMAKER • Takes text/webURL and extracts the geographical information from it. • SELECT * FROM geo.placemaker WHERE documentContent = "Hey, I am in bangalore now. Will visit mumbai and delhi before going back to sunnyvale" AND documentType="text/ plain"
- 44. EXAMPLES • SELECT *FROM geo.placemaker WHERE documentURL = "http://en.wikipedia.org/wiki/ Country" AND documentType="text/html” • SELECT * FROM geo.placemaker WHERE documentURL = "http:// timesofindia.feedsportal.com/c/33039/f/ 533917/index.rss" AND documentType="text/ rss" h"p://developer.yahoo.com/geo/placemaker/
- 45. REQUIREMENTS • Finding currentlocation. • Turning a location into a place. • Finding geographical hierarchy. • Geo-tagging information. • Displaying geo information.
- 46. Use Maps tovisualize geo data.
- 47. Use YQL inyour hacks using Javascript.
- 48. USEFUL LINKS • http://isithackday.com/hacks/geo/ • http://isithackday.com/geoplanet-explorer/ • • http://isithackday.com/hacks/geo/yql-geo-library/ • http://www.hostip.info/
- 49. Final Lessons: Links • All Yahoo! APIs and Services • http://developer.yahoo.com/everything.html • YQL Documentation • http://developer.yahoo.com/yql • YQL Console • http://developer.yahoo.com/yql/console • YQL Github Account (Contribute Tables) • http://github.com/yql/yql-tables
- 50. LETS LOCATE YOURHACK! THANKS!! If you throw a guy on Foursquare and a guy on Twitter off a cliff, which one would hit the ground first? The guy on Twitter. The guy on Foursquare would have to stop halfway down to check in! PRAJWAL BS Twitter - @prajwalbs Slideshare - http://www.slideshare.net/prajwalbs Facebook - http://www.facebook.com/prajwalbs