4 ms·
Altitude is a tricky thing with these kinds of devices. They’re usually based on pressure readings from a sensor inside the device but that reading can be affec
by alexlrobertson 8y ago
Altitude is a tricky thing with these kinds of devices. They’re usually based on pressure readings from a sensor inside the device but that reading can be affected greatly by a number of factors.
See https://groups.google.com/forum/m/#!topic/wahoo-elemnt-users/L7skAUrsVwk https://groups.google.com/forum/m/#!topic/wahoo-elemnt-users...
- ebikelaw 8y agoWith all the people riding around with these sensors now, shouldn't it be possible to synthesize a very accurate basemap elevation from the reported barometric and GPS readings?
- 07d046 8y agoStrava does this
- alexlrobertson 8y agoGot a source? Strava segments in my area often have very wrong altitude data. Chicago is extremely flat yet there are segments that report gradients of over 10%, sometimes as much as 27%. I believe they are thrown off by buildings and the frequent elevated train tracks. https://www.strava.com/segments/1504604 https://www.strava.com/segments/1504604
- 07d046 8y agohttps://support.strava.com/hc/en-us/articles/115000024864-Announcing-Strava-s-Elevation-Basemap https://support.strava.com/hc/en-us/articles/115000024864-An... I'm guessing segments just use the elevation data of the activity that they were created from, hence why they can be wildly wrong.