How about: You display OSM data, you attribute, and you attribute on the map view.
If that's what we want, I would be OK for a short attribution like (c)OSM&co. Yves Le 8 septembre 2019 19:39:55 GMT+02:00, Christoph Hormann <o...@imagico.de> a écrit : >On Sunday 08 September 2019, Simon Poole wrote: >> >> /If OpenStreetMap is not the largest data provider for the visible >> map rendering, attribution with other sources on a separate page that >> is visible after user interaction is acceptable./ >> >> [...] > >For understanding the practical function of such a rule (and the >efforts >necessary to circumvent it of course) - how do you measure the fraction > >OSM accounts for as data provider for a map, especially if several >different data types are involved. If you go by data volume (which can > >be easily changed by several orders of magnitude through geometry >compression and expansion methods of course) i would probably say i >have never seen a map with relief depiction (like shading or countour >lines) where the majority of the data is from OSM. Any satellite image > >layer with annotation labels and lines (boundaries, roads etc.) from >OSM would equally be exempt from visible attribution under such rule. > >Practically i think everyone should be aware that such rule is a clear >invitation how to avoid the need for attribution for map producers. I >would go as far as saying that no matter how you answer my question as >to how data fractions are measured any map could be easily modified by >adding sufficient other data to get the OSM fraction below the 50 >percent limit and this way get off the hook. > >As already said i don't see how such a recommendation could in any way >be considered compatible with the ODbL attribution requirements. > >-- >Christoph Hormann >http://www.imagico.de/ > >_______________________________________________ >talk mailing list >talk@openstreetmap.org >https://lists.openstreetmap.org/listinfo/talk
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