Here is an example of what I feel should be discouraged: https://www.openstreetmap.org/way/404484020
(given that this is part of a HOT project, it is likely to be corrected/improved soon) In this case the individual buildings are clearly visible, and there is non-building space between them. Mike On Thu, Mar 17, 2016 at 6:51 AM, Philip Barnes <p...@trigpoint.me.uk> wrote: > On Thu, 2016-03-17 at 10:37 +0100, Martin Koppenhoefer wrote: > > > 2016-03-17 10:24 GMT+01:00 Ralph Aytoun <ralph.ayt...@ntlworld.com>: > > > At the moment I see mappers leaving blank spaces because they cannot > identify individual buildings, either because of the complexity of the area > or because the imagery is not sharp enough. This approach will allow them > to indicate that there are structures there but need more attention. > > > > IMHO if you can't identify individual buildings because you are working > from remote and don't know the area and the aerial imagery is not sharp > enough, you simply shouldn't map individual buildings and refrain from > using the building tag. Use the landuse tag, map the areas and wait for > better imagery, or use alternative methods if you are on the ground and > know how to do it. > > > It is not that simple and certainly not about aerial imagery quality, we > are not all mapping planned North American cities where everything is a > perfect right angle. > > In the real world we are mapping towns with medieval building patterns > that evolved over millennia and even modern buildings that replace older > buildings must still fit within this plan. > > Whilst you can see roof lines, the buildings can fill the entire block and > from above it is not possible to work out what frontage building each > roofline belongs to. To say that in this case just map as landuse is > totally wrong. A single building is a start, or more likely several single > buildings. It is far easier to then survey the area on the ground having > something to improve than working with a blank landuse. > > For example you may visit a shop and as you wander through there will be > nooks and crannys, it may open out into a another building and armed with > the roughly mapped buildings you can work out where you are and that > belongs to that building and improve the mapping. > > Phil (trigpoint) > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging > >
_______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
