On Mon, Mar 2, 2009 at 2:35 PM, OJ W <ojwli...@googlemail.com> wrote: > On Mon, Mar 2, 2009 at 1:56 PM, Frederik Ramm <frede...@remote.org> wrote: >> OJ W wrote: >>> the ability to create an uncopiable map image from OSM data >>> does seem to have appeared in the ODbL license? >> >> You can create an image and (provided that your image is not a data >> base, a distinction that has not yet been resolved) restrict copying of >> the image. >> >> This is essential if we want to give users the chance to combine OSM >> material with other, more restrictively licensed material, into images >> or other products. > > Exactly, so the ODbL has a political choice to license OSM map images > as PD (that can trivially be made uncopiable) where previously we > guaranteed that all map images would be freely copiable. Whether this > is "essential" hasn't been explained - it certainly isn't essential to > the creation of free maps.
s/political/pragmatic/ The practical effect of the ODbL is to ensure that free maps are made from quality geodata and that users of free and non-free maps made from ODbL data have access to the data. Access to free maps is then a matter of ensuring that they are made and distributed, rather than a matter of trying to get the data. BY-SA doesn't ensure this. It's like the GPL without the requirement to provide source. A licence that means that your map may not be free but I can make you a free one is not absolutely convincing from a copyleft point of view. But from a pragmatic point of view, better guarantees of access to data that copyleft maps can and will be made from may be at least an acceptable compromise. - Rob. _______________________________________________ legal-talk mailing list legal-talk@openstreetmap.org http://lists.openstreetmap.org/listinfo/legal-talk
