This is beautiful. Thanks so much for creating it. I’m hoping you can explain what looks like an anomaly though. Looking at Macritchie Reservoir in Singapore, there’s the expected hot outline on parts of its shore, but also a dead-straight oblong running roughly east-West for over 1km. Thing is, it can’t be a running track as it’s in the middle of the reservoir itself. Any thoughts on how this artefact got there?
Absolutely lovely. The pedant in me wants to point out this isn't exactly a heatmap; there's no heat spreading blobbiness. It's more of a spatial histogram. Nothing wrong with that! The localized normalization of values using a CDF is very clever.
Cool article. I found some neat things in their data.<p>You can see the burning man "city" moves slightly each year creating an "echo" in the data.<p><a href="https://labs.strava.com/heatmap/#13.49/-119.20399/40.78672/hot/all" rel="nofollow">https://labs.strava.com/heatmap/#13.49/-119.20399/40.78672/h...</a><p>Also, some people appear to have biked to the Farallone's <a href="https://labs.strava.com/heatmap/#12.41/-122.97170/37.71310/hot/ride" rel="nofollow">https://labs.strava.com/heatmap/#12.41/-122.97170/37.71310/h...</a>
It seems they have removed tiling level 16 and 17 :-(<p>For example:<p>Level 16 on the old heatmap: <a href="http://globalheat.strava.com/tiles/cycling/color3/16/33705/21620.png" rel="nofollow">http://globalheat.strava.com/tiles/cycling/color3/16/33705/2...</a>
Level 16 on the new heatmap (empty tile): <a href="https://heatmap-external-b.strava.com/tiles/ride/blue/16/33705/21620.png" rel="nofollow">https://heatmap-external-b.strava.com/tiles/ride/blue/16/337...</a>
Are you planning to update heatmap on iD editor for OSM?
<a href="https://strava.github.io/iD/" rel="nofollow">https://strava.github.io/iD/</a>