Hello everyone
Jo UK wrote: ↑September 24th, 2021, 8:32 pm
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Elevation not shown here. Just as well -
the information is unreliable
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Exactly,
Jo!
The altitude information is unreliable.
Altitude = GPS measured
altitude above average sea level, in metres. (And thus not, as the altimeters in aeroplanes permanenty do, the exact, real elevation above the ground).
It goes without saying that these altitudes (measured by a satellite and sent by the transmitter) have a considerable margin of error.
Because of this margin of error, we sometimes see a bird flying under water, for many kilometres, or we see birds 'flying' at 0 km/h, while in reality and obviously, they are just standing with both feet firmly on a field.
These 3D images may seem fascinating at first glance, but in fact (in my opinion) they are no more than 'entertainment'.
- they suggest an altitude, but this altitude is often far from correct
- much more than a 2D map, they suggest the trajectory flown. However, also the shown trajectory is not accurate. Only the shown location points (longitude and latitude coordinates) are (more or less, at 20-30 metres accuracy) correct. The straight lines on a map connect those points, but do not represent the actual trajectory flown. (The less location points we get, the more inaccurate the displayed trajectory will be). Birds do not fly such very straight lines, nor do they make razor-sharp turns.
That is why I also prefer the 2D maps. They are much more "correct" and clear.
(As long as everyone realises that a show route represents connected location points)
This is of course just my opinion.
