Charly Kurz

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

Hi Vince, I found out long time ago and shared this on this site with Elle, that measurements done by an iPhone are quite accurate. I could verify that by analysing the gpx files produced using Exc...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

@ Vince: the problem is long known, for at least 2 Years. Starva applies a correction on all "non-trusted" devices, supposedly such without barometric sensor (including their own iPhone app), which...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

@ Jens:  you are right, errors >100% are quite common. I assume also all manually uploaded files recorded with other apps or devices are not "trusted". I tried to replace gpx file headers before up...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Calculating ascent inaccurate

Hi Jason,  there is another thread dealing with the issue: Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain) In fact, wherever I rode, from the westernmost i...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

Hi Elle, Jens, its not a filtering / smoothing problem. Even when you plainly add up all the tiny ups and downs inside the gpx you will not end up with an exaggerated elevation gain like STRAVA som...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

Thanks Elle, the article/ your interview and the basic idea make perfect sense. Reality @STRAVA however doesn't match. I could believe it might be a simple thing, refer to my question #3, elevation...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

@ Krisztian: measurements done by an iPhone are quite accurate, I could verify that by analysing the gpx files produced. If you smoothen this data,e.g. by disregarding elevation differences <1m the...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

Hi, the problem persists since > 1 Year: elevation gains are ALWAYS calculated wrongly. I can trust any other apps I'm using. The STRAVA upload would be a nice thing, but one needs to disregard the...

• Visualizza commento
• 0 voti

1. Community
2. Feature Discussion
3. Why such different elevation corrections? (same route logg 1790m, 2615m, 3468m elev gain)

Hi Elle, I experience problems with inflated elevations calculated by STRAVA, here is an extreme one with an error >100%: http://www.strava.com/activities/266235362This hilly ride was logged with M...

• Visualizza commento
• 0 voti