differ eleve gain in suunto app

[S.Pichi]

@isazi this is a GPX file imported in both GC and SA.
the gpx file is as below

https://drive.google.com/file/d/1iIuJ0y9EG5TbmDngnMP96WsjhvO5tmB6/view?usp=sharing

[isazi]

@s-pichi thanks, I will look at it.

[Stas Varazhbit]

I also noticed the difference in height in SA and GC, when loading the same GPX file.

[isazi]

I will try few different tools and if the majority is different from SA will fill in a bug with Suunto.

[TheGuyFromTheSummit]

This is the same with other route planning apps as well

Even when you track an activity with a Suunto watch and then import the track into GC and SA.
GC has 10-20% more ascent.

I do not know why and no idea which app is right.

[Stas Varazhbit]

In my case, the SA indications agree with the data of the race organizers, and the GC indications are underestimated.

[isazi]

So far I tried Komoot and Plotaroute. Komoot finds two different tracks in the file, one having ascent equal to 2540 and the other to 1760. Plotaroute finds only one route with ascent of 2880.

[TheGuyFromTheSummit]

@isazi

alpenvereinaktiv.com says the following:

[pilleus]

With https://www.j-berkemeier.de/ShowGPX.html there are the attached results …

[isazi]

And using gpx.studio gives an ascent of 3198.

[isazi]

Another update on this, I just wrote a simple script in Python to manually compute ascent and descent of all tracks and routes contained in a GPX file, and the result for this file is 3598 meters of ascent and descent.

This is the same number that we can see in SA. So simply SA does not apply any filter to the data, and counts every meter of ascent of the GPX file.

Conclusion: I will not open a bug with Suunto. Maybe not very sophisticated, but the SA implementation is coherent with the data.