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Colophon: Create your own personal Map tiles (from July 2013)

Submitted by Roland on Sat, 2014-04-12 08:16

If you want to make your own map tile out of many (100s or 1000s) of latitude longitude pairs e.g. from Vancouver flickr photos taken 2007-2011 during commuter hours (7-10am., 3-6p.m), here's how:

  • Create a file, let's call it "latlong.text" in the format "lat, long" e.g. remove the square brackets from my vancouver 2007-11 flickr commuter file
  • encode it

    • cat latlong.txt | ./encode -o vancouver2007-2011 -z 16
  • render it

    • ./render -A -- vancouver2007-2011/ 16 49.25706 -123.070538525034 49.29808542 -123.159733 > vancouver-2007-2011.try21.png

    • (you will have to play around with the lat and long to make sure they cover the area you want e.g. in the above example I made it so that bounderies were: clark park to the south and east, connaught park to the west and stanley park to the north)

  • And here's the resulting PNG map tile on flickr
  • encode and render come from @enf on twitter, the amazing Eric Fischer:

Still don't have real time geotagged photo web in 2011! Proof: lack of geotagged Vancouver photos on flickr after Vancouver Canucks beat the San Jose Sharks

Submitted by Roland on Sun, 2011-05-29 22:20

We still don't have a real time geotagged photo web in 2011. Even in 2011, where there are many more geo capable cameras and cameraphones than ever, people still wait hours, days, weeks or hours to upload their photos to places like flickr as evidenced by my video of the 276 (as of this writing) photos geotagged in Vancouver on flickr taken on the day the Vancouver Canucks beat San Jose Sharks to make it into the 2011 Stanley Cup finals.

My prediction: after a couple of months, we'll have about 500 photos (up from the 276 currently posted) from this day geotagged in Vancouver and uploaded to flickr.

Video of HTML5 mashup of Vancouver Beats San Jose May 24, 2011 which is currently 271 geotagged flickr photos

Far less then the approximately 2500 geotagged photos taken during the 2010 Olympic Gold Men's Hockey day in 2010 when there were far less geo-capable phones and cameras.


Try it out yourself (you get to see my cool reverse fade :-) !)

Compare and Contrast with 2010 Olympics Men's Gold Medal Hockey Game

HD size with Street Chrome Version of 2010 Men's Gold Medal Hockey Day Geotagged Pics from Flickr

Submitted by Roland on Sun, 2010-10-17 17:12

HD size with Street Chrome Version of 2010 Men's Gold Medal Hockey Day Geotagged Pics from Flickr

Each red, yellow or orange dot represents 1 geotagged cameraphone photo from folks on Flickr taken between 00:00 Feb 28 2010 PST to 11:59PM Feb 28 2010 PST. Over 2000 photos! generated by: 

(Works on Firefox 4, Safari 5, Chrome, Safari iOS 4 but not Firefox 3., github source)


  1. Granville and Robson truly were the epicentre of action that day!
  2. No photos uploaded from Granville Island
  3. No photos uploaded from The Drive - East Van was almost totally unaffected by the Olympics which corresponds with my experience. East of Gastown there was no Olympic visitors and not nearly as much buzz.
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