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Altitude: remove spikes from activities

As you can see from the attached screenshot, I was running on a completely flat ground, around 20 meters above sea level.

Pretty much all the activity has been recorded around 10 meters above sea level (which is an acceptable error), but around half of the course it dropped to -60 meters or so, and around thee quarter it jumped at 30 meters. I was expecting a total ascent around 10 meters or so, but in the end I got 60 meters and 20 floors… on a perfectly flat course.

Smart watches with GPS, barometer, smart apps on the companion smartphone and Garmin servers on their own. With all that cleverness involved how could you possibly draw those dumb spikes? They don't make any sense.

0 Garmin-Matthew over 5 years ago

From the Garmin Connect Website you can enable 'Elevation Correction' this should remove the spike

0 Labronico over 5 years ago in reply to Garmin-Matthew

Hello Matthew. Yes, I’ve tried that before posting and it actually made everything worse.

That place has been mapped with different altitude point alone the route even if is a very big town square with perfectly flat ground (I mean, maybe half a meter from side to side).

By enabling elev corrections the altitude gain raises from 60 meters to 80, which is even more nonsensical. The graph became a continuous up and down as if it was a motocross court.

I still do think it should smooth out those spikes which can’t possibly be real elevation changes.