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Community Council | Posts: 4,920 | Thanked: 12,867 times | Joined on May 2012 @ Southerrn Finland
#224
Originally Posted by KaukoSaarinen View Post
BTW. It seems strange to me that the altitude info on Sports Tracker and Endomondo ST, for example, is variable even while water sports as kayaking. You know that altitude is not changing, so wouldn't it be wise to use a calculated average altitude during a workout while water sports?
If the altitude value is taken from GPS rather than from map contours this is what's expected to happen. The vertical positioning accuracy of GPS is really poor when compared to the horizontal plane positioning accuracy. This page explains it nicely.

On the other hand, you propably don't want to use altitude values pulled off google maps, since you cannot know that the user isn't airborne, as hang-gliding for example
 

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