3 ms·

Anyone know how to download (a portion) of the dataset?

by emilfihlman 9y ago

exikyut 9y ago
HERE IS HOW TO DOWNLOAD IT I just spent a few minutes figuring it out. First grab some coordinates, I picked a totally random spot in NY: https://labs.strava.com/heatmap/#16.11/-73.96162/40.73006/hot/all https://labs.strava.com/heatmap/#16.11/-73.96162/40.73006/ho... Now feed the GPS coords into the algorithm at https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames I can use PHP faster than anything else, so I used the PHP example on that page. $zoom = 15; $lon = -73.96162; $lat = 40.73006; $xtile = floor((($lon + 180) / 360) * pow(2, $zoom)); $ytile = floor((1 - log(tan(deg2rad($lat)) + 1 / cos(deg2rad($lat))) / pi()) /2 * pow(2, $zoom)); print "x: $xtile\n"; print "y: $ytile\n"; This printed: x: 9651 y: 12318 If I go to https://heatmap-external-c.strava.com/tiles/all/hot/15/9651/12318 https://heatmap-external-c.strava.com/tiles/all/hot/15/9651/..., I can see a portion of the map that's on the screen. My email is in my profile, downloading this would be very fun. It would just need a tonne of bandwidth and even more diskspace, and I don't have much of either myself.
- maxerickson 9y ago
  I think they mean the underlying data rather than the tiles. MOBAC is made for caching map tiles: http://mobac.sourceforge.net/ http://mobac.sourceforge.net/
  - emilfihlman 9y ago
    I mean the tiles because the actual dataset is not publicly available and I doubt it will ever be. One reverse a portion of the dataset from the tiles, though.
    - maxerickson 9y ago
      You could check the OSM gps layer to see if it has interesting data in the area; you can directly fetch the data there. https://www.openstreetmap.org/#map=18/38.03114/-78.52475&layers=G https://www.openstreetmap.org/#map=18/38.03114/-78.52475&lay... There's less traces than Strava has though.

3 ms·

Anyone know how to download (a portion) of the dataset?

by emilfihlman 9y ago

Anyone know how to download (a portion) of the dataset?

exikyut 9y ago
HERE IS HOW TO DOWNLOAD IT I just spent a few minutes figuring it out. First grab some coordinates, I picked a totally random spot in NY: https://labs.strava.com/heatmap/#16.11/-73.96162/40.73006/hot/all https://labs.strava.com/heatmap/#16.11/-73.96162/40.73006/ho... Now feed the GPS coords into the algorithm at https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames https://wiki.openstreetmap.org/wiki/Slippy_map_tilenames I can use PHP faster than anything else, so I used the PHP example on that page. $zoom = 15; $lon = -73.96162; $lat = 40.73006; $xtile = floor((($lon + 180) / 360) * pow(2, $zoom)); $ytile = floor((1 - log(tan(deg2rad($lat)) + 1 / cos(deg2rad($lat))) / pi()) /2 * pow(2, $zoom)); print "x: $xtile\n"; print "y: $ytile\n"; This printed: x: 9651 y: 12318 If I go to https://heatmap-external-c.strava.com/tiles/all/hot/15/9651/12318 https://heatmap-external-c.strava.com/tiles/all/hot/15/9651/..., I can see a portion of the map that's on the screen. My email is in my profile, downloading this would be very fun. It would just need a tonne of bandwidth and even more diskspace, and I don't have much of either myself.
- maxerickson 9y ago
  I think they mean the underlying data rather than the tiles. MOBAC is made for caching map tiles: http://mobac.sourceforge.net/ http://mobac.sourceforge.net/
  - emilfihlman 9y ago
    I mean the tiles because the actual dataset is not publicly available and I doubt it will ever be. One reverse a portion of the dataset from the tiles, though.
    - maxerickson 9y ago
      You could check the OSM gps layer to see if it has interesting data in the area; you can directly fetch the data there. https://www.openstreetmap.org/#map=18/38.03114/-78.52475&layers=G https://www.openstreetmap.org/#map=18/38.03114/-78.52475&lay... There's less traces than Strava has though.