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#Mapycz (now #Mapycom) from #Seznam use #OpenStreetMap everywhere except their home country - Czech Republic, where they have their own proprietary maps.
There have been rumours in the #OSM community that they actually copy from OSM. Today I found proof that they really do.
I mapped a new park in #Brno just by surveying and taking notes last year. Later the park showed up on Mapy.com with exactly the same path layout. The new orthophoto is out and it revealed that I didn't get everything right and Seznam got it wrong too. Exactly the same mistakes.
Not cool, Seznam.
@sesivany wha rummors? They are saying it everywhere. https://licence.mapy.cz/?doc=mapy_attr
@jmlich no, they are not saying that they use data about communications from OSM in the Czech Republic. You can't just blend OSM objects with proprietary objects of the same type. It's a license violation.
@sesivany the link is there. It is labeled 'and others', but it is there. I dont see what exactly should be ilegal?
@jmlich Pepo, if you want to make judgments, please at least study the OSM license first. You cannot use OSM objects in a map where you already have proprietary objects of the same type. And you can list sources however you want.
They use OSM for everything in other countries. That's fine. They only use OSM for certain types in CZ, such as benches, recycling points. That's fine. They use their own proprietary data for roads and paths and they can't add roads and paths from OSM to them.
@sesivany additionally it is question if it is their fault. Maybe some 3rd party daty provider made shortcut by using OSM data without considering impact to licence. Anyway, you can ask them to fix attribution ..
@jmlich it isn't about fixing attribution. It's a license violation. It's like as if Microsoft took GPL code from Linux and put it in Windows without releasing Windows as GPL. Attribution doesn't fix it.
Whether it was added by them or their supplier, is their problem and their legal responsibility.
It has already been raised with Seznam BTW.
@sesivany omg we should create librestreetmap, something with bsd license instead of gpl ;-D this rule that it cannot mix same types of objects in maps is terribily complex to explain. Or even that you cannot blend two images is something is irracional. At least for me. But IANAL of course
@jmlich yes, it's a bit complicated, but Seznam navigates well in it. All they are officially doing is in line with the license. Except for these "quiet copies". That's why I think it's not systematic, but rather a failure of an individual or individuals who wanted to make their job easier. For the sake of Seznam I hope they will stop it. We also wouldn't want an engineer in our kernel team who would copy code from BSD to Linux. 