Am 31.12.2014 um 18:14 schrieb Lars-Daniel Weber: ..... > > Are these objects to be released in ODbL and have they to be given back to > the community? > Since the CC-BY-SA tiles might have some generalisation (smoothing, > selection), this license also has to be encountered. .....
IMHO it really depends on what your users are doing: - tracing elements from the background and extracting naming etc in a systematic fashion (outside of what is covered by non-substantial): the licences apply (given that the only sane reason to do this would be to circumvent the licence, yes the licence applies) - drawing/adding something with only no reference to the background (for example a new building or a POI from GPS data): independent data. - doing the above using the OSM data as a reference: grey area. An example why the later is a grey area: you could easily use an OSM based background map to determine what is missing and what is already in OSM to generate a dataset that you could then provide as "OSM+" or so. This is likely something that the community would feel uneasy about and I personally would at least view as trying to work around the licence. On the other hand I'm sure there are a number of use cases were such use is unproblematic. Simon
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