On Thu, Jan 7, 2016 at 6:30 PM, Warin <[email protected]> wrote:
> > Grasping at straws .. the elevation of a mountain is given as its peak. If > there is consistency within the map then the elevation of all objects > should be their maximum height. > Sort of. By convention (in general mapping products) elevation is the height of the ground (top of mountain top of cliff, the floor of a valley). I have not heard anyone talk about the "elevation" of the top of a building or the top of a tree, etc. > > Good point there! :-) > For most it won't matter. What do international planes use as there > reference for height? Use that - again consistency. > Having worked with aviation map data outside of OSM, they are concerned with height of (typically man made) objects above the earth's surface (e.g. a 50 meter high radio antenna). >
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