Hi! Christian Gawron schrieb:
A very good hint. The understanding of all discussions on the matter is that the current OSM licence does not allow mixing with CIAT data nor with ASTER data. So you cannot publish those maps. Could you elaborate on this? I would understand that e.g. the license of the ASTER data forbids publishing of derived work (although I haven't checked this). But is there really a point in the OSM license which forbids creating derived works (maps) which as an "add-on" contain features created from proprietary data sources?
Yes. To put it very simple: The share-alike cause of the OSM licence requires you to make everything available under the OSM licence again. If you combine OSM with other data which has _any_ form of restrictions or any different interpretation of freeness, you are breaking one of the licences. A common workaround is to add the combined data in an extra layer and claim this makes a collective work. This is not legally sound, but has never been challenged. I am putting my hope in the new licence which would allow you to create such a combined work. bye Nop