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The What's Here screen shows different surface height versus the map itself.


The What's Here screen shows different surface height versus the map...
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Serge
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I checked it with ipad mini 4, SD 3.8.0.69 and PC SD 3.8.0.0
It always shows a different height for the ground altitude in the "What's Here" windows, could you please check why we have here a difference. cheers Serge

Tim Dawson
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The spot height on the map is probably a mountain peak (they usually are). Unless you managed to get your finger right on it, you'll be seeing a height value close to it but not exactly the same.
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Tim Dawson - 5/9/2017 10:58:32 AM
The spot height on the map is probably a mountain peak (they usually are). Unless you managed to get your finger right on it, you'll be seeing a height value close to it but not exactly the same.

Sorry to bring it up again, but in the PC version I can point it very accurate with the mouse and it gives a high inaccuracy, just want to be sure that this will not affect any Planning/Flying information, has here in the picture it gives me the impression I could fly at 10,000ft 
‌ 

pgroell
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It looks as if the point with the elevation is misplaced, as the highest elevation in in the gray area.
It's the same with this summit slightly ‌to the west, and for other summits in Austria.

Tim Dawson
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I'm afraid when you start analysing elevation data at such zoom levels you start to see the inherent flaws in the data; its resolution is not perfect. The elevation data is a grid of terrain elevations for most of the world, but it was derived from a space shuttle-based radar installation and it does not include mountain peaks. Mountain peaks are very separate data, typically derived from geospatial surveys, and those are the spot heights you see on our map.

SkyDemon uses both terrain elevation grid data and mountain peak data when calculating your MSA, which is the minimum safe altitude for any given leg of your journey.

The What's Here screen is designed to show you the terrain elevation value under your finger, but since fingers are large, it is inherently not a good idea to poke your finger on the screen, look at the value and decide on an MSA based on its output. That's what the MSA value in the PLOG is for. ‌‌‌
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Can the ‘what’s here’ feature give the terrain height in all circumstances even when there is no upper airspace please.
GO

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