On Thursday, 18 July 2019 13:15:13 UTC+1, Wegi wrote:
>
> I use Osmand to record trips via GPS. Sometimes there are elevation values 
> of 0 in the GPX files. I think these are due to insufficient GPS reception. 
> These values are shown in the elevation profile and for ascent/descent 
> values, which render these unusable for me. e.g. a trip which has an ascent 
> of 300m is shown as 1100m, because of some 0 elevation values. When I load 
> the same GPX file in other viewers, these 0 values seems to be ignored, as 
> they show the (almost) correct ascent/descent values. 
>
> My question is, if there is the possibility to ignore those "0 values" 
> also in Osmand?
>

FWIW, I tried calculating total ascent from a recorded GPX and - even 
though I didn't see the '0' values - the results were unusable. I believe 
that's because GPS height positioning is relatively inaccurate so even if 
you were to travel on a perfectly flat road, you would still see changes in 
elevation - which would contribute to your total climb. I got results that 
were clearly wrong, so I abandoned that project.

Andy

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