-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 > 2) speedflying lines are not orthogonal to on-the-ground mapping -- very > dependent on hazards like the relief and mapped OSM features such as cable > cars, electricity lines, ski-pists ...
> 3) speedflying lines are always observable from the ground and it can be > improved by mappers Firstly, personally, I find these two points very important, as OSM requires verifiability, as seen in [reply1-1]. If other mappers on the ground can also confirm the existence of your speedflying route (of course, this might require the mapper to have experience in speedflying, but among the many mappers worldwide, there are bound to be others with the relevant background knowledge), Then perhaps we can treat it like sports such as golf and skiing. Therefore, I am inclined to vote approve it when raise a proposal. As for other geographical features that serve as important landmarks (such as iconic trees), perhaps they can be created within the route's relation? > 8) speedflying information is unavailable in any free (free as in FOSS) > database, and for countries away from the Alps it is hard to find even > private maps Because the technology of OSM is FOSS (Free and Open Source Software), we are able to have a very large and rich array of downstream projects. In theory, even if you are not allowed to draw those route, you can use OSM's tiles as a basemap and maintain a database that only contains speedflying routes, using the OSM technology stack (just like OpenGeofiction). And since your "OpenSpeedflyingMap" would only contain data on flying routes, it would be quite simple to render an overlay. (Of course, this is based on the assumption that your proposal is rejected, but even if your addition to OSM is turned down, you could still try to share routes in an open knowledge way (I am also looking forward to seeing someone do this, even though I am not an extreme sports enthusiast)) [reply1-1] https://wiki.openstreetmap.org/wiki/Verifiability LaoshuBaby (aka. 快乐的老鼠宝宝) 2024年4月14日 星期日 下午 1:31，Pesho Ivanov <iva...@pesho.info> 来信： > Hi OSM contributors, > > As a pilot and a contributor to FOSS, I want to contribute available > speedflying lines to OSM for the good of the pilots and everyone who > potentially intersects with them on the ground (skiers, property owners, > forest rangers, etc.). Following the aviation recommendations [2], I first > want to first discuss this idea with the OSM community. > > Speedflying is a type of paragliding which is mostly about proximity flying > (very low over the ground) or even speedriding (simultaneous skiing and > flying). In order to share information between each other, pilots are > plotting speedflying lines over maps (see [1] for an aggregation of lines > which the authors agree on importing to OSM). > > The Aviation recommendations in OSM [2] mostly ban airspace information in > OSM and I agree with this premise — since aviation information is mostly > independent from Earth mapping and use. Nevertheless, unlike aviation, > speedflying is a sport of flying short downward lines, staying zero to tens > of meters/feet above ground, which makes the whole sport primarily dictated > by the relief and what sticks out of it (incl. buildings, ski slopes, cable > cars, electricity lines, etc). This makes speedflying lines very different > from any aviation routes, and rather resemble climbing routes in OSM [3]. > > Next, I want to argument my opinion that speedflying lines belong to OSM by > commenting on all the rational points in the Aviation wiki page [2]: > 1) speedflying lines often coincide with existing features, like a river, > ridge, valley. speedflying routes are mainly determined by the relief > 2) speedflying lines are not orthogonal to on-the-ground mapping -- very > dependent on hazards like the relief and mapped OSM features such as cable > cars, electricity lines, ski-pists (mostly forbidden to speedride or land on > them), forests, protected areas (often forbidden to fly over), and also > reusing takeoffs and landings appearing on OSM [4]; speedflying lines are > mostly independent of other aviation > 3) speedflying lines are always observable from the ground and it can be > improved by mappers > 4) speedflying routes are generally not governed by authorities and the > available maps are spread among private self-made google maps (owned by > speedflyers all of whom I asked, were very passionate about importing to OSM > since they stop maintaining them) > 5) speedflying lines are generally short and in the mountains so they rarely > intersect something when plotted on 2D (mostly with a ski-pist or a cable car) > 6) speedflying lines are of significance for skiers who may share or neighbor > takeoffs, landings or offpist ski-riding, as well as of interest of property > owners of nearby huts, restaurants, rangers, etc. > 7) speedflying is fastly growing in popularity, there are schools on > speedflying specifically, and access to information is needed for the safety > of the pilots and the surroundings > 8) speedflying information is unavailable in any free (free as in FOSS) > database, and for countries away from the Alps it is hard to find even > private maps > 9) speedflying lines are easily plotted in 2D since most of the flying is > close to ground (altitude depending mostly on the glide and the level of > experience); 3D does not add much information > 10) speedflying lines do not intersect with regulated airspaces, do not > depend on air traffic, runways or other aviation (other than sharing takeoffs > and landings with paragliders) so they won't flood the existing OSM maps > 11) the weather is a random factor that may make a line not flyable, or may > require higher caution, etc. but it can hardly change the possible routes > 12) the low glide and the high sink-rate limits speedflying to roughly the > planned route; unlike paragliding, improvising with takeoffs and landings is > almost impossible (experts may say that they "found a line" which is a very > precious knowledge) > 13) speedflying information is not published officially so the main > information contributors are sole pilots who are willing to contribute their > knowledge to the community (e.g. the author of [1]) > > I hope to have convinced you that despite of technically flying, speedflying > is a dictated by the Earth makes it a natural match with OSM. I will be glad > to receive your feedback. > > [1] speedflyingmap.ch > [2] https://wiki.openstreetmap.org/wiki/Aviation > [3] https://wiki.openstreetmap.org/wiki/Climbing > [4] https://wiki.openstreetmap.org/wiki/Tag:sport%3Dfree_flying > > Best, > Pesho Ivanov, PhD > Pennsylvania State University > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk -----BEGIN PGP SIGNATURE----- Version: ProtonMail wnUEARYKACcFgmYbcEYJkAKveBAgqgAiFiEEgnNMqLCqBiEzh7MYAq94ECCq ACIAALwfAQDiLbugiqVdzFimQ1PolhDPAkZCFiKQtCC8NZxCjwlGXAD+JZyN kkcg6H6YiUB4+cVwL42a251D6wgPcKGtic8QvgI= =MCk2 -----END PGP SIGNATURE-----
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