alt Hacker NewsGarmin and Strava must be sitting on a gold mine of practical DEM data based on ride and hike records. They have huge databases from mobile devices recording GPS position, speed, and pressure.
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sarnu • yesterday at 3:28 PM
My guess is that analyzing the recorded activities is what komoot did to get useful elevation data.
Yet it's unclear to what extent they actually use them - on freeway adjacent bike paths that have different gradients than the adjacent freeway (typically steeper), it's very clear Garmin is using data referencing the freeway.