Licence and Legal FAQ/Why CC BY-SA is Unsuitable: Difference between revisions

When CC BY-SA OSM data is used to render a map (e.g: tiles) then that map is also CC BYSA licensed. Therefore, combining these rendered items with other data would require that the other data is compatible with, or can be released under, CC BY-SA. This makes it very difficult, or impossible, to use certain data sources in rendered maps. It is also unclear whether that means that OSM data is allowed to be combined with proprietary data, even when no improvements are made to the map. For example; Partitioning OSM data using polygons from a commercial data set (e.g: ONS "super output areas" [7]) for the purposes of analysis and statistical reporting.