Hi, >> 1) We clarify that a Derived Database is only deems to exist when the >> martial changes have occurred to the content of the DB, but not if the >> dataset has merely been processed into a different format. > > On the face of it this sounds reasonable, although I can see there being > some contention over what counts as a "material difference". > > To give a concrete example, similar to the routing service Frederik > mentioned, I would like to be able to use OSM data for my company's > (commercial) application.
[...] You say your example is about "lossy compression", but this may not always be the case - simplification algorithms can be arbitrarily complex and time consuming. You might also, for example, make a single geometry from connecting ways that bear the same name and apply other non-trivial operations which don't technically "enrich" the data as they operate solely on the OSM input, but which still represent significant know-how and/or computing power. Question is: Is it our aim to force OSM users to donate this know-how and/or computing power to the project by requesting that the resulting data bases - even though containing only of OSM with no added input or "no material difference" - be share-aliked, or is it ok for us to say that unless additional inputs come into play, a note like "just take the motorway data from a planet file and apply reasonable simplification" is sufficient? For some use cases, this might be quite a big difference. Bye Frederik -- Frederik Ramm ## eMail [EMAIL PROTECTED] ## N49°00'09" E008°23'33" _______________________________________________ legal-talk mailing list [EMAIL PROTECTED] http://lists.openstreetmap.org/listinfo/legal-talk
