Trimmed version of slides shown at the Data + Visualization Toronto Meetup Group's Fourth Meetup. Contains information about the Google Maps API, and Google Geocoding API.

1. Raining Cats and
Dogs
DVTO 4: The Google Maps API

2. http://www.toronto.ca/fire/cadinfo/livecad.htm

4. Slides Removed
•
•
•
See http://www.torontofirecalls.com for app
http://www.toronto.ca/fire/cadinfo/livecad.htm
http://www.toronto.ca/fire/cadinfo/livecad.xml

5. Designs and Compromises
• “First make it possible. Then make it beautiful.
Then make it fast.” -Nathan Marz

6. Make it Possible
• Node JS and Redis, because programming
• Revert to Rails and Postgres, because spaghetti

7. Every 5 Minutes do X
1. Custom Rake Task w/ Heroku Scheduler
2. Clockwork and Delayed Job (OMG $$$)
3. Clockwork and Delayed Job with Workless
4. Switch to WebFaction
5. Bare Cron
6. Cron by Whenever Gem

8. Slide Removed
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http://mapicons.nicolasmollet.com/

9. Make it Fast(er)
•
NewRelic development agent -> Profiled
•
Event retrieval on click? Not scalable
•
Optimized AR Queries
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InfoWindow Generation/Retrieval to AJAX

10. Part 4
Google Geocoding and
Maps API’s

11. Google Geocoding API
•
http://maps.googleapis.com/maps/api/geocode/j
son?address=1600+Amphitheatre+Parkway,
+Mountain+View,+CA&sensor=true
•
JSON or XML, HTTP or HTTPS
•
2,500 requests per 24 hour period.
•
Also a rate limit, so sleep during bulk geocodes

13. Reverse Geocoding
•
Have location, need address.
•
http://maps.googleapis.com/maps/api/geocode/j
son?latlng=40.714224,-73.961452&sensor=true

15. Slide Removed
•
https://github.com/alexreisner/geocoder

16. Geocode Happy
1. Realistic use case?
2. Have a strategy.
3. Check the TOS.

17. Markers on a
Map

18. Step 1

19. Step 2

20. Step 3

21. Step 4

22. Step 5

23. Slide Removed
•
See
https://github.com/apneadiving/Google-Maps-for-Rails

24. Bonus Resources
•
CartoDB and Torque
•
Google Maps Mania Blog

25. Slide Removed
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See thedirt.co

26. Slide Removed
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See padmapper.com

27. Slide Removed
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http://lifewatch.inbo.be/blog/posts/trackingeric.html

28. Matt
Holtom
matt@codeandiron.com
@mattholtomTO
Code &
Iron
codeandiron.com
@codeandiron