On Sat, 2020-07-25 at 16:42 +0200, Tobias Zwick wrote: > If the date + *source* of the last change made on (the geometry of > an) element was readily available, through the API or another meta- > tag (source=bing, anyone? ;-) ), this would help to identify areas > that should be updated because a new more current and/or detailed > source became available. > > In Hamburg, we are lucky that the public authority provides us with > really detailed up-to-date satellite imagery that are far beyond bing > but there is no easy way to see which buildings and road geometries > have still been mapped on the basis of bing and which are already > using the better source. > > So in a nutshell, the topic of how to find things based on old > sources is also very relevant for remote mappers.
Technically there is survey:date and source:date that may be on the object, or (preferred now?) the changeset. So a quality assurance tool could check that, however in practice they aren't nearly in use enough, (editors using them by default would help), and there often isn't a date attached to satellite imagery. I also think they'd have to do multiple api calls to work it out, so it could definitely be streamlined with a new api endpoint. Cj _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
