sent from a phone On 4. May 2019, at 12:47, Tobias Knerr <o...@tobias-knerr.de> wrote:
On 03.05.19 18:20, Paul Allen wrote: Or this https://goo.gl/maps/TxVMau8EBrLUAaeU6 [...] You will note that there are narrow, normal-size steps within big steps. It's complicated. Yeah, there's absolutely no chance to make that guess from just a polygon OR the relation originally proposed in this thread. :) On 03.05.19 17:49, Martin Koppenhoefer wrote: Can it cope with cases like these? http://1.bp.blogspot.com/--QaPv-T1b2Q/TWEia7iPWYI/AAAAAAAAEwQ/dtB1TfiqeA0/s1600/Dresden_Treppe_BrTerrasse_1905.jpg Only if we split it into a bottom and top part: http://tobias-knerr.de/upload/Step%20Polygon%203D%20Examples/br%C3%BChl.png As splitting is likely necessary to properly model the landing in the first place, you may or may not consider that acceptable. splitting is fine and will always be needed for landings between the flights. The original area relation would be capable of having a single object representing the whole structure: you would put lower, upper, lower upper in order and the landings are defined between the uppers and the following lowers, but if we can avoid the relation all together and get defined results with just areas and linear ways, even better. This one shows a common problem, occurring when the surroundings are not completely leveled (steps that do not run across the whole width): http://www.bilderbuch-koeln.de/bilder/k%C3%B6ln_altstadt_nord_freitreppe_am_dom_treppe_domplatte_bahnhofsvorplatz_753a433380_978x1304xin.jpeg [...] https://c2.staticflickr.com/4/3902/14798079901_ff9a5b72c8_b.jpg The second example will work fine, the first one won't. This, too, is a limitation shared by the relation originally proposed in this thread, by the way. If you can get the second one working I don’t understand why the first one is different (presuming it is split). For the second one to work there must also be polygonal ramps (basically the same as steps, just without the steps) at the border.I just added them: https://www.openstreetmap.org/way/688139506 https://www.openstreetmap.org/way/688139507 If you like, could you test if it really works? Thank you, Martin
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