[OSM-talk] Flight "paths" in OSM
john at jfeldredge.com
john at jfeldredge.com
Sun Oct 10 16:44:00 BST 2010
As someone else mentioned earlier, the actual routes that the planes follow are usually not these shortest-distance routes.
-------Original Email-------
Subject :Re: [OSM-talk] Flight "paths" in OSM
From :mailto:fabiolocati at gmail.com
Date :Sun Oct 10 10:12:35 America/Chicago 2010
Why iwould it be not useful to public transport routing?
On Sun, Oct 10, 2010 at 5:08 PM, Mike N. <niceman at att.net> wrote:
> Even a relation adds no information to the map, other than perhaps "these
> are points on the surface of the earth which allow for an unobstructed
> atmospheric path to be calculated between".
>
> There are about 28,000 aeroway=aerodrome tags, and 12,000 runways
> tagged. So if we wish to add relations between all possible airports, that
> represents about 72,000,000 great circle relations that would need to be
> added to cover them all.
>
> From: Aun Johnsen
> Sent: Sunday, October 10, 2010 10:34 AM
> To: OpenStreetMap
> Subject: Re: [OSM-talk] Flight "paths" in OSM
> If there is any interest of mapping airline routes, than do it with a
> relation between the airport nodes, as great circles can easily be
> calculated between two known positions. Making lines on the map is easy
> enough when you have the end positions, and nodes in between is not
> necessary at all.
>
>
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